46349
2017
2017
eng
7
18
article
BioMed Central
London
1
--
--
--
Effectiveness of an interactive telerehabilitation system with home-based exercise training in patients after total hip or knee replacement: study protocol for a multicenter, superiority, no-blinded randomized controlled trial
Background: Total hip or knee replacement is one of the most frequently performed surgical procedures. Physical rehabilitation following total hip or knee replacement is an essential part of the therapy to improve functional outcomes and quality of life. After discharge from inpatient rehabilitation, a subsequent postoperative exercise therapy is needed to maintain functional mobility. Telerehabilitation may be a potential innovative treatment approach. We aim to investigate the superiority of an interactive telerehabilitation intervention for patients after total hip or knee replacement, in comparison to usual care, regarding physical performance, functional mobility, quality of life and pain. Methods/design: This is an open, randomized controlled, multicenter superiority study with two prospective arms. One hundred and ten eligible and consenting participants with total knee or hip replacement will be recruited at admission to subsequent inpatient rehabilitation. After comprehensive, 3-week, inpatient rehabilitation, the intervention group performs a 3-month, interactive, home-based exercise training with a telerehabilitation system. For this purpose, the physiotherapist creates an individual training plan out of 38 different strength and balance exercises which were implemented in the system. Data about the quality and frequency of training are transmitted to the physiotherapist for further adjustment. Communication between patient and physiotherapist is possible with the system. The control group receives voluntary, usual aftercare programs. Baseline assessments are investigated after discharge from rehabilitation; final assessments 3 months later. The primary outcome is the difference in improvement between intervention and control group in 6-minute walk distance after 3 months. Secondary outcomes include differences in the Timed Up and Go Test, the Five-Times-Sit-to-Stand Test, the Stair Ascend Test, the Short-Form 36, the Western Ontario and McMaster Universities Osteoarthritis Index, the International Physical Activity Questionnaire, and postural control as well as gait and kinematic parameters of the lower limbs. Baseline-adjusted analysis of covariance models will be used to test for group differences in the primary and secondary endpoints. Discussion: We expect the intervention group to benefit from the interactive, home-based exercise training in many respects represented by the study endpoints. If successful, this approach could be used to enhance the access to aftercare programs, especially in structurally weak areas.
Trials
10.1186/s13063-017-2173-3
28934966
1745-6215
wos:2017
438
WOS:000411355700001
Voller, H (reprint author), Univ Potsdam, Ctr Rehabil Res, Neuen Palais 10, D-14469 Potsdam, Germany., heinz.voeller@uni-potsdam.de
German Statutory Pension Insurance (DRV Berlin-Brandenburg) [10-40.07.05.07.007]
importub
2020-04-20T00:44:01+00:00
filename=package.tar
d816b3e03044ef3894cad728fd4fb311
Sarah Eichler
Sophie Rabe
Annett Salzwedel
Steffen Mueller
Josefine Stoll
Nina Tilgner
Michael John
Karl Wegscheider
Frank Mayer
Heinz Völler
eng
uncontrolled
Telerehabilitation
eng
uncontrolled
Home-based
eng
uncontrolled
Total hip replacement
eng
uncontrolled
Total knee replacement
eng
uncontrolled
Exercise therapy
eng
uncontrolled
Aftercare
Referiert
Department Sport- und Gesundheitswissenschaften
Import
Institut für Sportmedizin und Prävention
53436
2018
2018
eng
226
231
6
61
article
Elsevier
Clare
1
2018-03-20
2018-03-20
--
Differences in neuromuscular activity of ankle stabilizing muscles during postural disturbances
The purpose was to examine gender differences in ankle stabilizing muscle activation during postural disturbances. Seventeen participants (9 females: 27 +/- 2yrs., 1.69 +/- 0.1 m, 63 +/- 7 kg; 8 males: 29 +/- 2yrs., 1.81 +/- 0.1 m; 83 +/- 7 kg) were included in the study. After familiarization on a split-belt-treadmill, participants walked (1 m/s) while 15 right-sided perturbations were randomly applied 200 ms after initial heel contact. Muscle activity of M. tibialis anterior (TA), peroneus longus (PL) and gastrocnemius medialis (GM) was recorded during unperturbed and perturbed walking. The root mean square (RMS; [%]) was analyzed within 200 ms after perturbation. Co-activation was quantified as ratio of antagonist (GM)/agonist (TA) EMG-RMS during unperturbed and perturbed walking. Time to onset was calculated (ms). Data were analyzed descriptively (mean +/- SD) followed by three-way-ANOVA (gender/condition/muscle; alpha= 0.05). Perturbed walking elicited higher EMG activity compared to normal walking for TA and PL in both genders (p < 0.000). RMS amplitude gender comparisons revealed an interaction between gender and condition (F = 4.6, p = 0.049) and, a triple interaction among gender, condition and muscle (F = 4.7, p = 0.02). Women presented significantly higher EMG-RMS [%] PL amplitude than men during perturbed walking (mean difference = 209.6%, 95% confidence interval = -367.0 to -52.2%, p < 0.000). Co-activation showed significant lower values for perturbed compared to normal walking (p < 0.000), without significant gender differences for both walking conditions. GM activated significantly earlier than TA and PL (p < 0.01) without significant differences between the muscle activation onsets of men and women (p = 0.7). The results reflect that activation strategies of the ankle encompassing muscles differ between genders. In provoked stumbling, higher PL EMG activity in women compared to men is present. Future studies should aim to elucidate if this specific behavior has any relationship with ankle injury occurrence between genders.
Gait & posture
a gender-specific analysis
10.1016/j.gaitpost.2018.01.023
29413789
0966-6362
1879-2219
wos:2018
WOS:000428028400032
Mueller, J (reprint author), Univ Outpatient Clin Sports Med & Orthopaed, Neuen Palais 10 House 12, D-14469 Potsdam, Germany., thormei@uni-potsdam.de
German National Institute of Sport Science [BISp IIA1-070113/13-14]; European Union (ERDF European Regional Development Fund)European Union (EU)
2022-01-14T10:31:00+00:00
sword
importub
filename=package.tar
4984fcc877e016c311aa9158f9593da7
Mueller, Juliane
false
true
Juliane Mueller
Eduardo Andrés Martinez-Valdes
Josefine Stoll
Steffen Mueller
Tilman Engel
Frank Mayer
eng
uncontrolled
Lower extremity
eng
uncontrolled
EMG
eng
uncontrolled
Perturbation
eng
uncontrolled
Split-belt treadmill
eng
uncontrolled
Ankle
Medizin und Gesundheit
Department Sport- und Gesundheitswissenschaften
Import
44910
2016
2016
eng
520
525
6
32
article
Human Kinetics Publ.
Champaign
1
--
--
--
Influence of Load on Three-Dimensional Segmental Trunk Kinematics in One-Handed Lifting: A Pilot Study
Stability of the trunk is relevant in determining trunk response to different loading in everyday tasks initiated by the limbs. Descriptions of the trunk’s mechanical movement patterns in response to different loads while lifting objects are still under debate. Hence, the aim of this study was to analyze the influence of weight on 3-dimensional segmental motion of the trunk during 1-handed lifting. Ten asymptomatic subjects were included (29 ± 3 y; 1.79 ± 0.09 m; 75 ± 14 kg). Subjects lifted 3× a light and heavy load from the ground up onto a table. Three-dimensional segmental trunk motion was measured (12 markers; 3 segments: upper thoracic area [UTA], lower thoracic area [LTA], lumbar area [LA]). Outcomes were total motion amplitudes (ROM;[°]) for anterior flexion, lateral flexion, and rotation of each segment. The highest ROM was observed in the LTA segment (anterior flexion), and the smallest ROM in the UTA segment (lateral flexion). ROM differed for all planes between the 3 segments for both tasks (P < .001). There were no differences in ROM between light and heavy loads (P > .05). No interaction effects (load × segment) were observed, as ROM did not reveal differences between loading tasks. Regardless of weight, the 3 segments did reflect differences, supporting the relevance of multisegmental analysis.
Journal of applied biomechanics
10.1123/jab.2015-0227
27341406
1065-8483
1543-2688
wos2016:2019
WOS:000384950800011
Muller, J (reprint author), Univ Potsdam, Univ Outpatient Clin Sports Med & Sports Orthopae, Potsdam, Germany., thormei@uni-potsdam.de
German Federal Institute of Sport Science; MiSpEx-the National Research Network for Medicine in Spine Exercise [BISp IIA1-080102A/11-14]; European Union (ERDF-European Regional Development Fund) [80132471]
importub
2020-03-22T14:07:01+00:00
filename=package.tar
6281e6a44ed5e19b538ad76f3a1790a7
Juliane Müller
Steffen Müller
Josefine Stoll
Michael V. Rector
Heiner Baur
Frank Mayer
eng
uncontrolled
trunk motion
eng
uncontrolled
kinematic trunk model
eng
uncontrolled
everyday task
eng
uncontrolled
MiSpEx*
Referiert
Exzellenzbereich Kognitionswissenschaften
Import
57697
2020
2020
eng
446
447
2
17
52
article
Lippincott Williams & Wilkins
Philadelphia
1
2020-05-28
2020-05-28
--
The effect of a low volume trunk-stabilisation exercise protocol on biomechanical function and compliance
Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
10.1249/01.mss.0000678760.27551.f6
0195-9131
1530-0315
wos:2020
American-College-of-Sports-Medicine (ACSM) Virtual Conference
2020
WOS:000590026301581
ELECTR NETWORK
Univ. Potsdam, Hochschulambulanz, Am Neuen Palais 10; Olympic Training Centre Brandenburg, Potsdam, Germany, jhenschke@uni-potsdam.de
Henschke, Jakob
2023-01-26T10:41:11+00:00
sword
importub
filename=package.tar
4108fef98559c6819119ce96e7c66e15
2031167-9
603994-7
false
true
Jakob Henschke
Josefine Stoll
Stephan Kopinski
Yu-Hsien Lu
Frank Mayer
Medizin und Gesundheit
Referiert
Department Sport- und Gesundheitswissenschaften
Import
53313
2017
2017
eng
212
218
7
70
article
Elsevier
Oxford
1
2017-12-15
2017-12-15
--
Effect of high-intensity perturbations during core-specific sensorimotor exercises on trunk muscle activation
Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk. However, the influence of high-intensity perturbations on training efficiency is unclear within this context. Sixteen participants (29 +/- 2 yrs; 175 +/- 8 cm; 69 +/- 13 kg) were prepared with a 12-lead bilateral trunk EMG. Warm-up on a dynamometer was followed by maximum voluntary isometric trunk (flex/ext) contraction (MVC). Next, participants performed four conditions for a one-legged stance with hip abduction on a stable surface (HA) repeated randomly on an unstable surface (HAP), on a stable surface with perturbation (HA + P), and on an unstable surface with perturbation (HAP + P). Afterwards, bird dog (BD) was performed under the same conditions (BD, BDP, BD + P, BDP + P). A foam pad under the foot (HA) or the knee (BD) was used as an unstable surface. Exercises were conducted on a moveable platform. Perturbations (ACC 50 m/sec(2);100 ms duration;10rep.) were randomly applied in the anterior-posterior direction. The root mean square (RMS) normalized to MVC (%) was calculated (whole movement cycle). Muscles were grouped into ventral right and left (VR;VL), and dorsal right and left (DR;DL). Ventral Dorsal and right-left ratios were calculated (two way repeated-measures ANOVA;alpha = 0,05). Amplitudes of all muscle groups in bird dog were higher compared to hip abduction (p <= 0.0001; Range: BD: 14 +/- 3% (BD;VR) to 53 +/- 4%; HA: 7 +/- 2% (HA;DR) to 16 +/- 4% (HA;DR)). EMG-RMS showed significant differences (p < 0.001) between conditions and muscle groups per exercise. Interaction effects were only significant for HA (p = 0.02). No significant differences were present in EMG ratios (p > 0.05). Additional high-intensity perturbations during core-specific sensorimotor exercises lead to increased neuromuscular activity and therefore higher exercise intensities. However, the beneficial effects on trunk function remain unclear. Nevertheless, BD is more suitable to address trunk muscles.
Journal of biomechanics
10.1016/j.jbiomech.2017.12.013
29290418
0021-9290
1873-2380
wos:2018
2nd International Workshop on Spinal Loading and Deformation
MAY 18-20, 2017
WOS:000428496500027
Univ Berlin, Julius Wolff Inst Charite, Berlin, GERMANY, Univ Berlin, Julius Wolff Inst Charite
Mueller, J (reprint author), Univ Outpatient Clin, Sports Med & Sports Orthopaed, Neuen Palais 10,House 12, D-19469 Potsdam, Germany., thormei@uni-potsdam.de
German Federal Institute of Sport Science; MiSpEx - National Research Network for Medicine in Spine Exercise [BISp IIA1-080102A/11-18]; European Union (ERDF - European Regional Development Fund)
2022-01-06T10:10:48+00:00
sword
importub
filename=package.tar
96a9f4047e12b67ae8199a08e91ecf2a
false
true
Juliane Müller
Miralem Hadzic
Hendrik Mugele
Josefine Stoll
Steffen Müller
Frank Mayer
eng
uncontrolled
Split-belt treadmill
eng
uncontrolled
EMG
eng
uncontrolled
Core stability
eng
uncontrolled
MiSpEx
Biowissenschaften; Biologie
Institut für Biochemie und Biologie
Import
50742
2019
2019
eng
141
159
19
article
Routledge
London
1
--
--
--
Overuse and injury prevention
Elite youth cycling
978-1-315-11077-6
978-1-138-08684-5
wos:2019
WOS:000461444000011
Cassel, M (reprint author), Univ Potsdam, Dept Sports Med & Sports Orthoped, Univ Outpatient Clin, Potsdam, Germany.
2021-05-19T09:43:03+00:00
sword
importub
filename=package.tar
4d526ad92bbb19faaaf637eab268d03b
false
true
Michael Cassel
Josefine Stoll
Monique Schugardt
Frank Mayer
Medizin und Gesundheit
Department Sport- und Gesundheitswissenschaften
Import
54285
2020
2021
eng
1
8
8
12
article
Frontiers Research Foundation
Lausanne, Schweiz
1
2021-07-06
2021-07-06
--
Intraindividual Doppler Flow Response to Exercise Differs Between Symptomatic and Asymptomatic Achilles Tendons
Objective: This study investigated intraindividual differences of intratendinous blood flow (IBF) in response to running exercise in participants with Achilles tendinopathy.
Design: This is a cross-sectional study.
Setting: The study was conducted at the University Outpatient Clinic.
Participants: Sonographic detectable intratendinous blood flow was examined in symptomatic and contralateral asymptomatic Achilles tendons of 19 participants (42 ± 13 years, 178 ± 10 cm, 76 ± 12 kg, VISA-A 75 ± 16) with clinically diagnosed unilateral Achilles tendinopathy and sonographic evident tendinosis.
Intervention: IBF was assessed using Doppler ultrasound “Advanced Dynamic Flow” before (Upre) and 5, 30, 60, and 120 min (U5–U120) after a standardized submaximal constant load run.
Main Outcome Measure: IBF was quantified by counting the number (n) of vessels in each tendon.
Results: At Upre, IBF was higher in symptomatic compared with asymptomatic tendons [mean 6.3 (95% CI: 2.8–9.9) and 1.7 (0.4–2.9), p < 0.01]. Overall, 63% of symptomatic and 47% of asymptomatic Achilles tendons responded to exercise, whereas 16 and 11% showed persisting IBF and 21 and 42% remained avascular throughout the investigation. At U5, IBF increased in both symptomatic and asymptomatic tendons [difference to baseline: 2.4 (0.3–4.5) and 0.9 (0.5–1.4), p = 0.05]. At U30 to U120, IBF was still increased in symptomatic but not in asymptomatic tendons [mean difference to baseline: 1.9 (0.8–2.9) and 0.1 (-0.9 to 1.2), p < 0.01].
Conclusion: Irrespective of pathology, 47–63% of Achilles tendons responded to exercise with an immediate acute physiological IBF increase by an average of one to two vessels (“responders”). A higher amount of baseline IBF (approximately five vessels) and a prolonged exercise-induced IBF response found in symptomatic ATs indicate a pain-associated altered intratendinous “neovascularization.”
Frontiers in physiology
10.3389/fphys.2021.617497
1664-042X
34295255
617497
Risch, Lucie
<a href="https://doi.org/10.25932/publishup-54286">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 746</a>
2564217-0
WOS:000674600000001
CC-BY - Namensnennung 4.0 International
Lucie Risch
Josefine Stoll
Anne Schomöller
Tilman Engel
Frank Mayer
Michael Cassel
eng
uncontrolled
achilles tendinopathy
eng
uncontrolled
tendinosis
eng
uncontrolled
neovascularization
eng
uncontrolled
ultrasound
eng
uncontrolled
advanced dynamic flow
eng
uncontrolled
sonography
Medizin und Gesundheit
Humanwissenschaftliche Fakultät
Extern
Referiert
Publikationsfonds der Universität Potsdam
Department Sport- und Gesundheitswissenschaften
Gold Open-Access
37874
2014
2014
eng
642
642
1
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Trunk strength in adolescent athletes with Spondylolisthesis with/without back pain during training: Pilot study
Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
0195-9131
1530-0315
wos:2014
61st Annual Meeting of the American-College-of-Sports-Medicine
APR 01-04, 2014
WOS:000339115904197
Atlanta, GA
Steffen Müller
Michael Cassel
Juliane Müller
Josefine Stoll
Heiner Baur
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
10187
2017
2017
eng
5
postprint
1
2017-01-12
2017-01-12
--
Incidence of back pain in adolescent athletes
Background
Recently, the incidence rate of back pain (BP) in adolescents has been reported at 21%. However, the development of BP in adolescent athletes is unclear. Hence, the purpose of this study was to examine the incidence of BP in young elite athletes in relation to gender and type of sport practiced.
Methods
Subjective BP was assessed in 321 elite adolescent athletes (m/f 57%/43%; 13.2 ± 1.4 years; 163.4 ± 11.4 cm; 52.6 ± 12.6 kg; 5.0 ± 2.6 training yrs; 7.6 ± 5.3 training h/week). Initially, all athletes were free of pain. The main outcome criterion was the incidence of back pain [%] analyzed in terms of pain development from the first measurement day (M1) to the second measurement day (M2) after 2.0 ± 1.0 year. Participants were classified into athletes who developed back pain (BPD) and athletes who did not develop back pain (nBPD). BP (acute or within the last 7 days) was assessed with a 5-step face scale (face 1–2 = no pain; face 3–5 = pain). BPD included all athletes who reported faces 1 and 2 at M1 and faces 3 to 5 at M2. nBPD were all athletes who reported face 1 or 2 at both M1 and M2. Data was analyzed descriptively. Additionally, a Chi2 test was used to analyze gender- and sport-specific differences (p = 0.05).
Results
Thirty-two athletes were categorized as BPD (10%). The gender difference was 5% (m/f: 12%/7%) but did not show statistical significance (p = 0.15). The incidence of BP ranged between 6 and 15% for the different sport categories. Game sports (15%) showed the highest, and explosive strength sports (6%) the lowest incidence. Anthropometrics or training characteristics did not significantly influence BPD (p = 0.14 gender to p = 0.90 sports; r2 = 0.0825).
Conclusions
BP incidence was lower in adolescent athletes compared to young non-athletes and even to the general adult population. Consequently, it can be concluded that high-performance sports do not lead to an additional increase in back pain incidence during early adolescence. Nevertheless, back pain prevention programs should be implemented into daily training routines for sport categories identified as showing high incidence rates.
a prospective study
urn:nbn:de:kobv:517-opus4-101874
online registration
Universität Potsdam, Publikationsfonds
PA 2016_47
1661.24
BMC sports science, medicine & rehabilitation (2016) 8:38. - DOI: 10.1186/s13102-016-0064-7
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/10185">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Steffen Müller
Juliane Müller
Josefine Stoll
Olaf Prieske
Michael Cassel
Frank Mayer
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
310
eng
uncontrolled
Injury
eng
uncontrolled
Pain occurrence
eng
uncontrolled
Training volume
eng
uncontrolled
Young athletes
Medizin und Gesundheit
open_access
Referiert
Open Access
Department Sport- und Gesundheitswissenschaften
BioMed Central
Universität Potsdam
https://publishup.uni-potsdam.de/files/10187/phr310_online.pdf
10185
2016
2016
eng
5
8
article
BioMed Central
London
1
--
2016-12-07
--
Incidence of back pain in adolescent athletes
Background
Recently, the incidence rate of back pain (BP) in adolescents has been reported at 21%. However, the development of BP in adolescent athletes is unclear. Hence, the purpose of this study was to examine the incidence of BP in young elite athletes in relation to gender and type of sport practiced.
Methods
Subjective BP was assessed in 321 elite adolescent athletes (m/f 57%/43%; 13.2 ± 1.4 years; 163.4 ± 11.4 cm; 52.6 ± 12.6 kg; 5.0 ± 2.6 training yrs; 7.6 ± 5.3 training h/week). Initially, all athletes were free of pain. The main outcome criterion was the incidence of back pain [%] analyzed in terms of pain development from the first measurement day (M1) to the second measurement day (M2) after 2.0 ± 1.0 year. Participants were classified into athletes who developed back pain (BPD) and athletes who did not develop back pain (nBPD). BP (acute or within the last 7 days) was assessed with a 5-step face scale (face 1–2 = no pain; face 3–5 = pain). BPD included all athletes who reported faces 1 and 2 at M1 and faces 3 to 5 at M2. nBPD were all athletes who reported face 1 or 2 at both M1 and M2. Data was analyzed descriptively. Additionally, a Chi2 test was used to analyze gender- and sport-specific differences (p = 0.05).
Results
Thirty-two athletes were categorized as BPD (10%). The gender difference was 5% (m/f: 12%/7%) but did not show statistical significance (p = 0.15). The incidence of BP ranged between 6 and 15% for the different sport categories. Game sports (15%) showed the highest, and explosive strength sports (6%) the lowest incidence. Anthropometrics or training characteristics did not significantly influence BPD (p = 0.14 gender to p = 0.90 sports; r2 = 0.0825).
Conclusions
BP incidence was lower in adolescent athletes compared to young non-athletes and even to the general adult population. Consequently, it can be concluded that high-performance sports do not lead to an additional increase in back pain incidence during early adolescence. Nevertheless, back pain prevention programs should be implemented into daily training routines for sport categories identified as showing high incidence rates.
BMC sports science, medicine & rehabilitation
a prospective study
10.1186/s13102-016-0064-7
2052-1847
Universität Potsdam, Publikationsfonds
PA 2016_47
1661.24
online registration
38
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-101874">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 310</a>
CC-BY - Namensnennung 4.0 International
Steffen Müller
Juliane Müller
Josefine Stoll
Olaf Prieske
Michael Cassel
Frank Mayer
eng
uncontrolled
Pain occurrence
eng
uncontrolled
Young athletes
eng
uncontrolled
Injury
eng
uncontrolled
Training volume
Medizin und Gesundheit
Referiert
Publikationsfonds der Universität Potsdam
Open Access
Department Sport- und Gesundheitswissenschaften
Universität Potsdam
39526
2017
2017
eng
9
postprint
1
--
2017-05-04
--
Trunk Muscle Activity during Drop Jump Performance in Adolescent Athletes with Back Pain
In the context of back pain, great emphasis has been placed on the importance of trunk stability, especially in situations requiring compensation of repetitive, intense loading induced during high-performance activities, e.g., jumping or landing. This study aims to evaluate trunk muscle activity during drop jump in adolescent athletes with back pain (BP) compared to athletes without back pain (NBP). Eleven adolescent athletes suffering back pain (BP: m/f: n = 4/7; 15.9 ± 1.3 y; 176 ± 11 cm; 68 ± 11 kg; 12.4 ± 10.5 h/we training) and 11 matched athletes without back pain (NBP: m/f: n = 4/7; 15.5 ± 1.3 y; 174 ± 7 cm; 67 ± 8 kg; 14.9 ± 9.5 h/we training) were evaluated. Subjects conducted 3 drop jumps onto a force plate (ground reaction force). Bilateral 12-lead SEMG (surface Electromyography) was applied to assess trunk muscle activity. Ground contact time [ms], maximum vertical jump force [N], jump time [ms] and the jump performance index [m/s] were calculated for drop jumps. SEMG amplitudes (RMS: root mean square [%]) for all 12 single muscles were normalized to MIVC (maximum isometric voluntary contraction) and analyzed in 4 time windows (100 ms pre- and 200 ms post-initial ground contact, 100 ms pre- and 200 ms post-landing) as outcome variables. In addition, muscles were grouped and analyzed in ventral and dorsal muscles, as well as straight and transverse trunk muscles. Drop jump ground reaction force variables did not differ between NBP and BP (p > 0.05). Mm obliquus externus and internus abdominis presented higher SEMG amplitudes (1.3–1.9-fold) for BP (p < 0.05). Mm rectus abdominis, erector spinae thoracic/lumbar and latissimus dorsi did not differ (p > 0.05). The muscle group analysis over the whole jumping cycle showed statistically significantly higher SEMG amplitudes for BP in the ventral (p = 0.031) and transverse muscles (p = 0.020) compared to NBP. Higher activity of transverse, but not straight, trunk muscles might indicate a specific compensation strategy to support trunk stability in athletes with back pain during drop jumps. Therefore, exercises favoring the transverse trunk muscles could be recommended for back pain treatment.
urn:nbn:de:kobv:517-opus4-395261
online registration
Universität Potsdam, Publikationsfonds
PA 2017_21
Frontiers in physiology (2017) Nr. 8:274. - DOI: 10.3389/fphys.2017.00274
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/39525">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Steffen Müller
Josefine Stoll
Michael Cassel
Frank Mayer
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
319
eng
uncontrolled
SEMG-pattern
eng
uncontrolled
back pain
eng
uncontrolled
drop jump
eng
uncontrolled
neuromuscular
eng
uncontrolled
performance
eng
uncontrolled
pre-activity
eng
uncontrolled
trunk
eng
uncontrolled
young athletes
Medizin und Gesundheit
open_access
Strukturbereich Kognitionswissenschaften
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/39526/phr_319_online.pdf
39525
2017
2017
eng
8
article
Frontiers Research Foundation
Lausanne
1
--
2017-05-04
--
Trunk Muscle Activity during Drop Jump Performance in Adolescent Athletes with Back Pain
In the context of back pain, great emphasis has been placed on the importance of trunk stability, especially in situations requiring compensation of repetitive, intense loading induced during high-performance activities, e.g., jumping or landing. This study aims to evaluate trunk muscle activity during drop jump in adolescent athletes with back pain (BP) compared to athletes without back pain (NBP). Eleven adolescent athletes suffering back pain (BP: m/f: n = 4/7; 15.9 ± 1.3 y; 176 ± 11 cm; 68 ± 11 kg; 12.4 ± 10.5 h/we training) and 11 matched athletes without back pain (NBP: m/f: n = 4/7; 15.5 ± 1.3 y; 174 ± 7 cm; 67 ± 8 kg; 14.9 ± 9.5 h/we training) were evaluated. Subjects conducted 3 drop jumps onto a force plate (ground reaction force). Bilateral 12-lead SEMG (surface Electromyography) was applied to assess trunk muscle activity. Ground contact time [ms], maximum vertical jump force [N], jump time [ms] and the jump performance index [m/s] were calculated for drop jumps. SEMG amplitudes (RMS: root mean square [%]) for all 12 single muscles were normalized to MIVC (maximum isometric voluntary contraction) and analyzed in 4 time windows (100 ms pre- and 200 ms post-initial ground contact, 100 ms pre- and 200 ms post-landing) as outcome variables. In addition, muscles were grouped and analyzed in ventral and dorsal muscles, as well as straight and transverse trunk muscles. Drop jump ground reaction force variables did not differ between NBP and BP (p > 0.05). Mm obliquus externus and internus abdominis presented higher SEMG amplitudes (1.3–1.9-fold) for BP (p < 0.05). Mm rectus abdominis, erector spinae thoracic/lumbar and latissimus dorsi did not differ (p > 0.05). The muscle group analysis over the whole jumping cycle showed statistically significantly higher SEMG amplitudes for BP in the ventral (p = 0.031) and transverse muscles (p = 0.020) compared to NBP. Higher activity of transverse, but not straight, trunk muscles might indicate a specific compensation strategy to support trunk stability in athletes with back pain during drop jumps. Therefore, exercises favoring the transverse trunk muscles could be recommended for back pain treatment.
Frontiers in physiology
10.3389/fphys.2017.00274
1664-042X
Universität Potsdam, Publikationsfonds
PA 2017_21
online registration
274
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-395261">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 319</a>
1846.36
CC-BY - Namensnennung 4.0 International
Steffen Müller
Josefine Stoll
Michael Cassel
Frank Mayer
eng
uncontrolled
SEMG-pattern
eng
uncontrolled
back pain
eng
uncontrolled
pre-activity
eng
uncontrolled
drop jump
eng
uncontrolled
neuromuscular
eng
uncontrolled
trunk
eng
uncontrolled
performance
eng
uncontrolled
young athletes
Medizin und Gesundheit
Strukturbereich Kognitionswissenschaften
Referiert
Publikationsfonds der Universität Potsdam
Open Access
Universität Potsdam
38864
2015
2015
deu
87
98
12
2
29
article
Thieme
Stuttgart
1
--
--
--
Tendinopathies of the Lower Extremities in Sport - Diagnostics and Therapy
Tendinopathies are frequently the cause of chronic, load-dependent complaints of the lower extremity. Commonly, the large tendons of the ankle and knee joints are affected, especially the Achilles and patellar tendons. Repeated overuse in sports and/or daily activities is assumed as the aetiology. Besides the clinical examination including a comprehensive anamnesis of pain and training/loading, sonographic imaging has a high training/loading relevance for the diagnosis of tendon pathologies of the lower extremity. Training concepts are considered in first line as the treatment of choice. A combination with physical therapy interventions can be useful. In cases of a more severe pathology and long-standing complaints multimodal therapeutic options should be employed. The use of surgical treatment procedures should only be taken into account in case of failed response to conservative treatment.
Sportverletzung, Sportschaden : Grundlagen, Prävention, Rehabilitation
10.1055/s-0034-1399668
26076301
0932-0555
1439-1236
wos:2015
WOS:000356435900003
Cassel, M (reprint author), Univ Potsdam, Hsch Ambulanz, Neuen Palais 10,Haus 12, D-14469 Potsdam, Germany., mcassel@uni-potsdam.de; fmayer@uni-potsdam.de
Michael Cassel
Josefine Stoll
Frank Mayer
eng
uncontrolled
Tendinopathy
eng
uncontrolled
sonography
eng
uncontrolled
principles of therapy
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
58405
2022
2022
eng
10
13
article
Frontiers Media
Lausanne
1
2022-03-17
2022-03-17
--
Effect of six-week resistance and sensorimotor training on trunk strength and stability in elite adolescent athletes
Intervention in the form of core-specific stability exercises is evident to improve trunk stability. The purpose was to assess the effect of an additional 6 weeks sensorimotor or resistance training on maximum isokinetic trunk strength and response to sudden dynamic trunk loading (STL) in highly trained adolescent athletes. The study was conducted as a single-blind, 3-armed randomized controlled trial. Twenty-four adolescent athletes (14f/10 m, 16 +/- 1 yrs.;178 +/- 10 cm; 67 +/- 11 kg; training sessions/week 15 +/- 5; training h/week 22 +/- 8) were randomized into resistance training (RT; n = 7), sensorimotor training (SMT; n = 10), and control group (CG; n = 7). Athletes were instructed to perform standardized, center-based training for 6 weeks, two times per week, with a duration of 1 h each session. SMT consisted of four different core-specific sensorimotor exercises using instable surfaces. RT consisted of four trunk strength exercises using strength training machines, as well as an isokinetic dynamometer. All participants in the CG received an unspecific heart frequency controlled, ergometer-based endurance training (50 min at max. heart frequency of 130HF). For each athlete, each training session was documented in an individual training diary (e.g., level of SMT exercise; 1RM for strength exercise, pain). At baseline (M1) and after 6 weeks of intervention (M2), participants' maximum strength in trunk rotation (ROM:63 degrees) and flexion/extension (ROM:55 degrees) was tested on an isokinetic dynamometer (concentric/eccentric 30 degrees/s). STL was assessed in eccentric (30 degrees/s) mode with additional dynamometer-induced perturbation as a marker of core stability. Peak torque [Nm] was calculated as the main outcome. The primary outcome measurements (trunk rotation/extension peak torque: con, ecc, STL) were statistically analyzed by means of the two-factor repeated measures analysis of variance (alpha = 0.05). Out of 12 possible sessions, athletes participated between 8 and 9 sessions (SMT: 9 +/- 3; RT: 8 +/- 3; CG: 8 +/- 4). Regarding main outcomes of trunk performance, experimental groups showed no significant pre-post difference for maximum trunk strength testing as well as for perturbation compensation (p > 0.05). It is concluded, that future interventions should exceed 6 weeks duration with at least 2 sessions per week to induce enhanced trunk strength or compensatory response to sudden, high-intensity trunk loading in already highly trained adolescent athletes, regardless of training regime.
Frontiers in physiology
a randomized controlled pilot trial
10.3389/fphys.2022.802315
35370766
1664-042X
outputup:dataSource:WoS:2022
802315
WOS:000777979800001
Mueller, S (corresponding author), Trier Univ Appl Sci, Dept Comp Sci Therapy Sci, Physiotherapy Exercise Sci & Appl Biomech, Trier, Germany.; Mueller, S (corresponding author), Univ Potsdam, Univ Outpatient Clin, Sports Med & Sports Orthopae, Potsdam, Germany., Stef.Mueller@hochschule-trier.de
German Federal Institute of Sport Science [BISp IIA 1-080126/09-13]
Mueller, Steffen
2023-03-17T08:16:40+00:00
sword
importub
filename=package.tar
c3cbcee46ab7a3af18a226090c5ae044
false
true
CC-BY - Namensnennung 4.0 International
Steffen Mueller
Juliane Mueller
Josefine Stoll
Frank Mayer
eng
uncontrolled
core
eng
uncontrolled
training intervention
eng
uncontrolled
trunk stability
eng
uncontrolled
exercise
eng
uncontrolled
perturbation
Referiert
Department Sport- und Gesundheitswissenschaften
Import
Gold Open-Access
DOAJ gelistet
44113
2019
2019
eng
17
591
postprint
1
2019-12-17
2019-12-17
--
General versus sports-specific injury prevention programs in athletes
Introduction
Injury prevention programs (IPPs) are an inherent part of training in recreational and professional sports. Providing performance-enhancing benefits in addition to injury prevention may help adjust coaches and athletes’ attitudes towards implementation of injury prevention into daily routine. Conventional thinking by players and coaches alike seems to suggest that IPPs need to be specific to one’s sport to allow for performance enhancement. The systematic literature review aims to firstly determine the IPPs nature of exercises and whether they are specific to the sport or based on general conditioning. Secondly, can they demonstrate whether general, sports-specific or even mixed IPPs improve key performance indicators with the aim to better facilitate long-term implementation of these programs?
Methods
PubMed and Web of Science were electronically searched throughout March 2018. The inclusion criteria were randomized control trials, publication dates between Jan 2006 and Feb 2018, athletes (11–45 years), injury prevention programs and included predefined performance measures that could be categorized into balance, power, strength, speed/agility and endurance. The methodological quality of included articles was assessed with the Cochrane Collaboration assessment tools.
Results
Of 6619 initial findings, 22 studies met the inclusion criteria. In addition, reference lists unearthed a further 6 studies, making a total of 28. Nine studies used sports specific IPPs, eleven general and eight mixed prevention strategies. Overall, general programs ranged from 29–57% in their effectiveness across performance outcomes. Mixed IPPs improved in 80% balance outcomes but only 20–44% in others. Sports-specific programs led to larger scale improvements in balance (66%), power (83%), strength (75%), and speed/agility (62%).
Conclusion
Sports-specific IPPs have the strongest influence on most performance indices based on the significant improvement versus control groups. Other factors such as intensity, technical execution and compliance should be accounted for in future investigations in addition to exercise modality.
Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
A systematic review on the effects on performance
10.25932/publishup-44113
urn:nbn:de:kobv:517-opus4-441131
1866-8364
PLoS ONE 14 (2019) 8, e0221346 DOI: 10.1371/journal.pone.0221346
e0221346
<a href="http://publishup.uni-potsdam.de/44112">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY-NC - Namensnennung, nicht kommerziell 4.0 International
Ashley Plummer
Hendrik Mugele
Kathrin Steffen
Josefine Stoll
Frank Mayer
Juliane Müller
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
591
Naturwissenschaften
Medizin und Gesundheit
open_access
Referiert
Open Access
Department Sport- und Gesundheitswissenschaften
Universität Potsdam
https://publishup.uni-potsdam.de/files/44113/phr591.pdf
52663
2018
2018
eng
555
563
9
7
39
article
Thieme
Stuttgart
1
2018-02-19
2018-02-19
--
Sensorimotor exercises and enhanced trunk function
The aim of this study was to investigate the effect of a 6-week sensorimotor or resistance training on maximum trunk strength and response to sudden, high-intensity loading in athletes. Interventions showed no significant difference for maximum strength in concentric and eccentric testing (p>0.05). For perturbation compensation, higher peak torque response following SMT (Extension: +24Nm 95%CI +/- 19Nm; Rotation: + 19Nm 95%CI +/- 13Nm) and RT (Extension: +35Nm 95%CI +/- 16Nm; Rotation: +5Nm 95%CI +/- 4Nm) compared to CG (Extension: -4Nm 95%CI +/- 16Nm; Rotation: -2Nm 95%CI +/- 4Nm) was present (p<0.05).
International journal of sports medicine
a randomized controlled trial
10.1055/a-0592-7286
29775985
0172-4622
1439-3964
wos:2018
WOS:000436585700009
Mueller, S (reprint author), Trier Univ Appl Sci, Comp Sci Therapy Sci, D-54293 Trier, Germany., stef.mueller@hochschule-trier.de
2021-11-15T15:43:39+00:00
sword
importub
filename=package.tar
56751fd02e02c028186361ad2ec405ed
Mueller, Steffen
Steffen Mueller
Tilman Engel
Juliane Müller
Josefine Stoll
Heiner Baur
Frank Mayer
eng
uncontrolled
core
eng
uncontrolled
training intervention
eng
uncontrolled
prevention
eng
uncontrolled
perturbation
eng
uncontrolled
MiSpEx*
Institut für Ernährungswissenschaft
Referiert
Department Sport- und Gesundheitswissenschaften
Import
52271
2018
2018
eng
8
19
article
BMC
London
1
--
2018-08-06
--
Dose-response relationship of core-specific sensorimotor interventions in healthy, well-trained participants
Background: Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk, improve athletic performance and prevent back pain. However, the dose-response relationship and, therefore, the dose required to improve trunk function is still under debate. The purpose of the present trial will be to compare four different intervention strategies of sensorimotor exercises that will result in improved trunk function. Discussion: The results of the study will be clinically relevant, not only for researchers but also for (sports) therapists, physicians, coaches, athletes and the general population who have the aim of improving trunk function.
Trials
study protocol for a (MiSpEx) randomized controlled trial
10.1186/s13063-018-2799-9
30081948
1745-6215
wos:2018
424
WOS:000440849100004
Mueller, J (reprint author), Univ Potsdam, Univ Outpatient Clin, Sports Med & Sports Orthopaed, Neuen Palais 10,House 12, D-14469 Potsdam, Germany., thormei@uni-potsdam.de
German Federal Institute of Sport Science; MiSpEx - the National Research Network for Medicine in Spine Exercise [BISp IIA1-080102A/11-18]; European Union (ERDF - European Regional Development Fund) [80132471]
2021-10-18T08:47:22+00:00
sword
importub
filename=package.tar
2b5854dad854395aa8b7777fccc4e3a7
CC-BY - Namensnennung 4.0 International
Juliane Müller
Josefine Stoll
Steffen Mueller
Frank Mayer
eng
uncontrolled
Sensorimotor training
eng
uncontrolled
Perturbation
eng
uncontrolled
Exercise
eng
uncontrolled
MiSpEx
Medizin und Gesundheit
Department Sport- und Gesundheitswissenschaften
Import
46662
2017
2017
eng
124
132
9
8
article
Frontiers Research Foundation
Lausanne
1
--
--
--
Trunk Muscle Activity during Drop Jump Performance in Adolescent Athletes with Back Pain
In the context of back pain, great emphasis has been placed on the importance of trunk stability, especially in situations requiring compensation of repetitive, intense loading induced during high-performance activities, e.g., jumping or landing. This study aims to evaluate trunk muscle activity during drop jump in adolescent athletes with back pain (BP) compared to athletes without back pain (NBP). Eleven adolescent athletes suffering back pain (BP: m/f: n = 4/7; 15.9 +/- 1.3 y; 176 +/- 11 cm; 68 +/- 11 kg; 12.4 +/- 10.5 h/we training) and 11 matched athletes without back pain (NBP: m/f: n = 4/7; 15.5 +/- 1.3 y; 174 +/- 7 cm; 67 +/- 8 kg; 14.9 +/- 9.5 h/we training) were evaluated. Subjects conducted 3 drop jumps onto a force plate (ground reaction force). Bilateral 12-lead SEMG (surface Electromyography) was applied to assess trunk muscle activity. Ground contact time [ms], maximum vertical jump force [N], jump time [ms] and the jump performance index [m/s] were calculated for drop jumps. SEMG amplitudes (RMS: root mean square [%]) for all 12 single muscles were normalized toMIVC (maximum isometric voluntary contraction) and analyzed in 4 time windows (100 ms pre- and 200 ms post-initial ground contact, 100 ms pre- and 200 ms post-landing) as outcome variables. In addition, muscles were grouped and analyzed in ventral and dorsal muscles, as well as straight and transverse trunk muscles. Drop jump ground reaction force variables did not differ between NBP and BP (p > 0.05). Mm obliquus externus and internus abdominis presented higher SEMG amplitudes (1.3-1.9-fold) for BP (p < 0.05). Mm rectus abdominis, erector spinae thoracic/lumbar and latissimus dorsi did not differ (p > 0.05). The muscle group analysis over the whole jumping cycle showed statistically significantly higher SEMG amplitudes for BP in the ventral (p = 0.031) and transverse muscles (p = 0.020) compared to NBP. Higher activity of transverse, but not straight, trunk muscles might indicate a specific compensation strategy to support trunk stability in athletes with back pain during drop jumps. Therefore, exercises favoring the transverse trunk muscles could be recommended for back pain treatment.
Frontiers in physiology
10.3389/fphys.2017.00274
28522976
1664-042X
wos:2017
274
WOS:000403200400001
Mueller, S (reprint author), Univ Potsdam, Univ Outpatient Clin, Sports Med & Sports Orthopaed, Potsdam, Germany., stefmue@uni-potsdam.de
National Institute of Sport Science of Germany (Bundesinstitut fur Sportwissenschaft BISp) [IIA 1-080126/09-13]; Deutsche Forschungsgemeinschaft; University of Potsdam
importub
2020-04-20T03:20:01+00:00
filename=package.tar
64ddd49393425af6e8e4b5bb217b9885
Steffen Müller
Josefine Stoll
Juliane Mueller
Michael Cassel
Frank Mayer
eng
uncontrolled
SEMG-pattern
eng
uncontrolled
back pain
eng
uncontrolled
pre-activity
eng
uncontrolled
drop jump
eng
uncontrolled
neuromuscular
eng
uncontrolled
trunk
eng
uncontrolled
performance
eng
uncontrolled
young athletes
Referiert
Department Sport- und Gesundheitswissenschaften
Import
Institut für Sportwissenschaft
36238
2012
2012
eng
255
266
12
4
20
article
IOS Press
Amsterdam
1
--
--
--
Validity of isokinetic trunk measurements with respect to healthy adults, athletes and low back pain patients
Background: Isokinetic measurements are widely used to assess strength capacity in a clinical or research context. Nevertheless, the validity of isokinetic measures for identifying strength deficits and the evaluation of therapeutic process regarding different pathologies is yet to be established. Therefore, the purpose of this review is to evaluate the validity of isokinetic measures in a specific case: that of muscular capacity in low back pain (LBP).
Methods: A literature search (PubMed; ISI Web of Knowledge; The Cochrane Library) covering the last 10 years was performed. Relevant papers regarding isokinetic trunk strength measures in healthy and patients with low back pain (PLBP) were searched. Peak torque values [Nm] and peak torque normalized to body weight [Nm/kg BW] were extracted for healthy and PLBP. Ranked mean values across studies were calculated for the concentric peak torque at 60 degrees/s as well as the flexion/extension (F/E) ratio.
Results: 34 publications (31 flexion/extension; 3 rotation) were suitable for reporting detailed isokinetic strength measures in healthy or LBP (untrained adults, adolescents, athletes). Adolescents and athletes were different compared to normal adults in terms of absolute trunk strength values and the F/E ratio. Furthermore, isokinetic measures evaluating therapeutic process and isokinetic rehabilitation training were infrequent in literature (8 studies).
Conclusion: Isokinetic measurements are valid for measuring trunk flexion/extension strength and F/E ratio in athletes, adolescents and (untrained) adults with/without LBP. The validity of trunk rotation is questionable due to a very small number of publications whereas no reliable source regarding lateral flexion could be traced. Therefore, isokinetic dynamometry may be utilized for identifying trunk strength deficits in healthy adults and PLBP.
Isokinetics and exercise science : official journal of the European Isokinetic Society
10.3233/IES-2012-00482
0959-3020
wos:2011-2013
WOS:000311228400003
Mueller, S (reprint author), Univ Outpatient Clin Potsdam, Neuen Palais 10,Haus 12, D-14469 Potsdam, Germany., stefmue@uni-potsdam.de
Steffen Müller
Josefine Stoll
Juliane Müller
Frank Mayer
eng
uncontrolled
Isokinetic
eng
uncontrolled
validity
eng
uncontrolled
low back pain
eng
uncontrolled
peak torque
eng
uncontrolled
trunk
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37917
2014
2014
eng
1328
1334
7
5
28
article
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Trunk extensor and flexor strength capacity in healthy young elite athletes aged 11-15 Years
Mueller, J, Mueller, S, Stoll, J, Baur, H, and Mayer, F. Trunk extensor and flexor strength capacity in healthy young elite athletes aged 11-15 years. J Strength Cond Res 28(5): 1328-1334, 2014-Differences in trunk strength capacity because of gender and sports are well documented in adults. In contrast, data concerning young athletes are sparse. The purpose of this study was to assess the maximum trunk strength of adolescent athletes and to investigate differences between genders and age groups. A total of 520 young athletes were recruited. Finally, 377 (n = 233/144 M/F; 13 +/- 1 years; 1.62 +/- 0.11 m height; 51 +/- 12 kg mass; training: 4.5 +/- 2.6 years; training sessions/week: 4.3 +/- 3.0; various sports) young athletes were included in the final data analysis. Furthermore, 5 age groups were differentiated (age groups: 11, 12, 13, 14, and 15 years; n = 90, 150, 42, 43, and 52, respectively). Maximum strength of trunk flexors (Flex) and extensors (Ext) was assessed in all subjects during isokinetic concentric measurements (60 degrees center dot s(-1); 5 repetitions; range of motion: 55 degrees). Maximum strength was characterized by absolute peak torque (Flex(abs), Ext(abs); N center dot m), peak torque normalized to body weight (Flex(norm), Ext(norm); N center dot m center dot kg(-1) BW), and Flex(abs)/Ext(abs) ratio (RKquot). Descriptive data analysis (mean +/- SD) was completed, followed by analysis of variance (alpha = 0.05; post hoc test [Tukey-Kramer]). Mean maximum strength for all athletes was 97 +/- 34 N center dot m in Flex(abs) and 140 +/- 50 N center dot m in Ext(abs) (Flex(norm) = 1.9 +/- 0.3 N center dot m center dot kg(-1) BW, Ext(norm) = 2.8 +/- 0.6 N center dot m center dot kg(-1) BW). Males showed statistically significant higher absolute and normalized values compared with females (p < 0.001). Flex(abs) and Ext(abs) rose with increasing age almost 2-fold for males and females (Flex(abs), Ext(abs): p < 0.001). Flex(norm) and Ext(norm) increased with age for males (p < 0.001), however, not for females (Flex(norm): p = 0.26; Ext(norm): p = 0.20). RKquot (mean +/- SD: 0.71 +/- 0.16) did not reveal any differences regarding age (p = 0.87) or gender (p = 0.43). In adolescent athletes, maximum trunk strength must be discussed in a gender- and age-specific context. The Flex(abs)/Ext(abs) ratio revealed extensor dominance, which seems to be independent of age and gender. The values assessed may serve as a basis to evaluate and discuss trunk strength in athletes.
Journal of strength and conditioning research : the research journal of the NSCA
10.1519/JSC.0000000000000280
24149756
1064-8011
1533-4287
wos:2014
WOS:000335119900019
Mueller, J (reprint author), Univ Potsdam, Univ Outpatient Clin, Potsdam, Germany., thormei@uni-potsdam.de
National Institute of Sport Science of Germany [BISp IIA 1-080126/09-13]
Juliane Müller
Steffen Müller
Josefine Stoll
Heiner Baur
Frank Mayer
eng
uncontrolled
core
eng
uncontrolled
adolescents
eng
uncontrolled
isokinetic
eng
uncontrolled
strength performance
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37875
2014
2014
eng
728
728
1
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Gender differences in lower leg muscular activity during provoked stumbling - a pilot study
Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
0195-9131
1530-0315
wos:2014
61st Annual Meeting of the American-College-of-Sports-Medicine
APR 01-04, 2014
WOS:000339115905043
Atlanta, GA
Firdevs Torlak
Firdevs Torlak
Edem Korkor Appiah-Dwomoh
Tilman Engel
Josefine Stoll
Juliane Müller
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37876
2014
2014
eng
827
827
1
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Does perturbed treadmill walking lead to emg-changes of the lower extremity?
Medicine and science in sports and exercise : official journal of the American College of Sports Medicine
0195-9131
1530-0315
wos:2014
61st Annual Meeting of the American-College-of-Sports-Medicine
APR 01-04, 2014
WOS:000339115905349
Atlanta, GA
Edem Korkor Appiah-Dwomoh
Firdevs Torlak
Tilman Engel
Josefine Stoll
Juliane Müller
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
44112
2019
2019
eng
15
8
14
article
PLOS 1
San Francisco
1
2019-08-29
2019-08-29
--
General versus sports-specific injury prevention programs in athletes
Introduction
Injury prevention programs (IPPs) are an inherent part of training in recreational and professional sports. Providing performance-enhancing benefits in addition to injury prevention may help adjust coaches and athletes’ attitudes towards implementation of injury prevention into daily routine. Conventional thinking by players and coaches alike seems to suggest that IPPs need to be specific to one’s sport to allow for performance enhancement. The systematic literature review aims to firstly determine the IPPs nature of exercises and whether they are specific to the sport or based on general conditioning. Secondly, can they demonstrate whether general, sports-specific or even mixed IPPs improve key performance indicators with the aim to better facilitate long-term implementation of these programs?
Methods
PubMed and Web of Science were electronically searched throughout March 2018. The inclusion criteria were randomized control trials, publication dates between Jan 2006 and Feb 2018, athletes (11–45 years), injury prevention programs and included predefined performance measures that could be categorized into balance, power, strength, speed/agility and endurance. The methodological quality of included articles was assessed with the Cochrane Collaboration assessment tools.
Results
Of 6619 initial findings, 22 studies met the inclusion criteria. In addition, reference lists unearthed a further 6 studies, making a total of 28. Nine studies used sports specific IPPs, eleven general and eight mixed prevention strategies. Overall, general programs ranged from 29–57% in their effectiveness across performance outcomes. Mixed IPPs improved in 80% balance outcomes but only 20–44% in others. Sports-specific programs led to larger scale improvements in balance (66%), power (83%), strength (75%), and speed/agility (62%).
Conclusion
Sports-specific IPPs have the strongest influence on most performance indices based on the significant improvement versus control groups. Other factors such as intensity, technical execution and compliance should be accounted for in future investigations in addition to exercise modality.
PLoS ONE
A systematic review on the effects on performance
10.1371/journal.pone.0221346
1932-6203
Universität Potsdam
PA 2019_104
1746.46
e0221346
<a href=" https://doi.org/10.25932/publishup-44113">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 591</a>
CC-BY-NC - Namensnennung, nicht kommerziell 4.0 International
Ashley Plummer
Hendrik Mugele
Kathrin Steffen
Josefine Stoll
Frank Mayer
Juliane Müller
Naturwissenschaften
Medizin und Gesundheit
open_access
Referiert
Publikationsfonds der Universität Potsdam
Open Access
Department Sport- und Gesundheitswissenschaften
40369
2017
2017
eng
1
7
18
article
BioMed Central
London
1
--
2017-09-21
--
Effectiveness of an interactive telerehabilitation system with home-based exercise training in patients after total hip or knee replacement
Background
Total hip or knee replacement is one of the most frequently performed surgical procedures. Physical rehabilitation following total hip or knee replacement is an essential part of the therapy to improve functional outcomes and quality of life. After discharge from inpatient rehabilitation, a subsequent postoperative exercise therapy is needed to maintain functional mobility. Telerehabilitation may be a potential innovative treatment approach. We aim to investigate the superiority of an interactive telerehabilitation intervention for patients after total hip or knee replacement, in comparison to usual care, regarding physical performance, functional mobility, quality of life and pain.
Methods/design
This is an open, randomized controlled, multicenter superiority study with two prospective arms. One hundred and ten eligible and consenting participants with total knee or hip replacement will be recruited at admission to subsequent inpatient rehabilitation. After comprehensive, 3-week, inpatient rehabilitation, the intervention group performs a 3-month, interactive, home-based exercise training with a telerehabilitation system. For this purpose, the physiotherapist creates an individual training plan out of 38 different strength and balance exercises which were implemented in the system. Data about the quality and frequency of training are transmitted to the physiotherapist for further adjustment. Communication between patient and physiotherapist is possible with the system. The control group receives voluntary, usual aftercare programs. Baseline assessments are investigated after discharge from rehabilitation; final assessments 3 months later. The primary outcome is the difference in improvement between intervention and control group in 6-minute walk distance after 3 months. Secondary outcomes include differences in the Timed Up and Go Test, the Five-Times-Sit-to-Stand Test, the Stair Ascend Test, the Short-Form 36, the Western Ontario and McMaster Universities Osteoarthritis Index, the International Physical Activity Questionnaire, and postural control as well as gait and kinematic parameters of the lower limbs. Baseline-adjusted analysis of covariance models will be used to test for group differences in the primary and secondary endpoints.
Discussion
We expect the intervention group to benefit from the interactive, home-based exercise training in many respects represented by the study endpoints. If successful, this approach could be used to enhance the access to aftercare programs, especially in structurally weak areas.
Trials
Study protocol for a multicenter, superiority, no-blinded randomized controlled trial
10.1186/s13063-017-2173-3
28934966
1745-6215
Universität Potsdam, Publikationsfonds
PA 2017_53
1661.24
online registration
438
WOS:000411355700001
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-403702">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 353</a>
Sarah Eichler
Sophie Rabe
Annett Salzwedel
Steffen Müller
Josefine Stoll
Nina Tilgner
Michael John
Karl Wegschneider
Frank Mayer
Heinz Völler
eng
uncontrolled
Telerehabilitation
eng
uncontrolled
Home-based
eng
uncontrolled
Total hip replacement
eng
uncontrolled
Total knee replacement
eng
uncontrolled
Exercise therapy
eng
uncontrolled
Aftercare
Medizin und Gesundheit
Strukturbereich Kognitionswissenschaften
Referiert
Publikationsfonds der Universität Potsdam
Open Access
Universität Potsdam
40370
2017
2017
eng
7
postprint
1
--
2017-11-16
--
Effectiveness of an interactive telerehabilitation system with home-based exercise training in patients after total hip or knee replacement
Background
Total hip or knee replacement is one of the most frequently performed surgical procedures. Physical rehabilitation following total hip or knee replacement is an essential part of the therapy to improve functional outcomes and quality of life. After discharge from inpatient rehabilitation, a subsequent postoperative exercise therapy is needed to maintain functional mobility. Telerehabilitation may be a potential innovative treatment approach. We aim to investigate the superiority of an interactive telerehabilitation intervention for patients after total hip or knee replacement, in comparison to usual care, regarding physical performance, functional mobility, quality of life and pain.
Methods/design
This is an open, randomized controlled, multicenter superiority study with two prospective arms. One hundred and ten eligible and consenting participants with total knee or hip replacement will be recruited at admission to subsequent inpatient rehabilitation. After comprehensive, 3-week, inpatient rehabilitation, the intervention group performs a 3-month, interactive, home-based exercise training with a telerehabilitation system. For this purpose, the physiotherapist creates an individual training plan out of 38 different strength and balance exercises which were implemented in the system. Data about the quality and frequency of training are transmitted to the physiotherapist for further adjustment. Communication between patient and physiotherapist is possible with the system. The control group receives voluntary, usual aftercare programs. Baseline assessments are investigated after discharge from rehabilitation; final assessments 3 months later. The primary outcome is the difference in improvement between intervention and control group in 6-minute walk distance after 3 months. Secondary outcomes include differences in the Timed Up and Go Test, the Five-Times-Sit-to-Stand Test, the Stair Ascend Test, the Short-Form 36, the Western Ontario and McMaster Universities Osteoarthritis Index, the International Physical Activity Questionnaire, and postural control as well as gait and kinematic parameters of the lower limbs. Baseline-adjusted analysis of covariance models will be used to test for group differences in the primary and secondary endpoints.
Discussion
We expect the intervention group to benefit from the interactive, home-based exercise training in many respects represented by the study endpoints. If successful, this approach could be used to enhance the access to aftercare programs, especially in structurally weak areas.
Study protocol for a multicenter, superiority, no-blinded randomized controlled trial
urn:nbn:de:kobv:517-opus4-403702
online registration
Trials 18 (2017). - DOI: 10.1186/s13063-017-2173-3
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/40369">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
Sarah Eichler
Sophie Rabe
Annett Salzwedel
Steffen Müller
Josefine Stoll
Nina Tilgner
Michael John
Karl Wegschneider
Frank Mayer
Heinz Völler
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
353
eng
uncontrolled
Aftercare
eng
uncontrolled
Exercise therapy
eng
uncontrolled
Home-based
eng
uncontrolled
Telerehabilitation
eng
uncontrolled
Total hip replacement
eng
uncontrolled
Total knee replacement
Medizin und Gesundheit
open_access
Strukturbereich Kognitionswissenschaften
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/40370/phr353_online.pdf
39492
2017
2017
eng
11
3
12
article
PLoS
Lawrence, Kan.
1
--
2017-03-03
--
Effects of sudden walking perturbations on neuromuscular reflex activity and three-dimensional motion of the trunk in healthy controls and back pain symptomatic subjects
Background
Back pain patients (BPP) show delayed muscle onset, increased co-contractions, and variability as response to quasi-static sudden trunk loading in comparison to healthy controls (H). However, it is unclear whether these results can validly be transferred to suddenly applied walking perturbations, an automated but more functional and complex movement pattern. There is an evident need to develop research-based strategies for the rehabilitation of back pain. Therefore, the investigation of differences in trunk stability between H and BPP in functional movements is of primary interest in order to define suitable intervention regimes. The purpose of this study was to analyse neuromuscular reflex activity as well as three-dimensional trunk kinematics between H and BPP during walking perturbations.
Methods
Eighty H (31m/49f;29±9yrs;174±10cm;71±13kg) and 14 BPP (6m/8f;30±8yrs;171±10cm;67±14kg) walked (1m/s) on a split-belt treadmill while 15 right-sided perturbations (belt decelerating, 40m/s2, 50ms duration; 200ms after heel contact) were randomly applied. Trunk muscle activity was assessed using a 12-lead EMG set-up. Trunk kinematics were measured using a 3-segment-model consisting of 12 markers (upper thoracic (UTA), lower thoracic (LTA), lumbar area (LA)). EMG-RMS ([%],0-200ms after perturbation) was calculated and normalized to the RMS of unperturbed gait. Latency (TON;ms) and time to maximum activity (TMAX;ms) were analysed. Total motion amplitude (ROM;[°]) and mean angle (Amean;[°]) for extension-flexion, lateral flexion and rotation were calculated (whole stride cycle; 0-200ms after perturbation) for each of the three segments during unperturbed and perturbed gait. For ROM only, perturbed was normalized to unperturbed step [%] for the whole stride as well as the 200ms after perturbation. Data were analysed descriptively followed by a student´s t-test to account for group differences. Co-contraction was analyzed between ventral and dorsal muscles (V:R) as well as side right:side left ratio (Sright:Sleft). The coefficient of variation (CV;%) was calculated (EMG-RMS;ROM) to evaluate variability between the 15 perturbations for all groups. With respect to unequal distribution of participants to groups, an additional matched-group analysis was conducted. Fourteen healthy controls out of group H were sex-, age- and anthropometrically matched (group Hmatched) to the BPP.
Results
No group differences were observed for EMG-RMS or CV analysis (EMG/ROM) (p>0.025). Co-contraction analysis revealed no differences for V:R and Srigth:Sleft between the groups (p>0.025). BPP showed an increased TON and TMAX, being significant for Mm. rectus abdominus (p = 0.019) and erector spinae T9/L3 (p = 0.005/p = 0.015). ROM analysis over the unperturbed stride cycle revealed no differences between groups (p>0.025). Normalization of perturbed to unperturbed step lead to significant differences for the lumbar segment (LA) in lateral flexion with BPP showing higher normalized ROM compared to Hmatched (p = 0.02). BPP showed a significant higher flexed posture (UTA (p = 0.02); LTA (p = 0.004)) during normal walking (Amean). Trunk posture (Amean) during perturbation showed higher trunk extension values in LTA segments for H/Hmatched compared to BPP (p = 0.003). Matched group (BPP vs. Hmatched) analysis did not show any systematic changes of all results between groups.
Conclusion
BPP present impaired muscle response times and trunk posture, especially in the sagittal and transversal planes, compared to H. This could indicate reduced trunk stability and higher loading during gait perturbations.
PLoS one
10.1371/journal.pone.0174034
1932-6203
Universität Potsdam, Publikationsfonds
PA 2017_10
1525.12
online registration
e0172334
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-394931">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 317</a>
CC-BY - Namensnennung 4.0 International
Juliane Müller
Tilman Engel
Steffen Müller
Josefine Stoll
Heiner Baur
Frank Mayer
Medizin und Gesundheit
Referiert
Publikationsfonds der Universität Potsdam
Open Access
Department Sport- und Gesundheitswissenschaften
Universität Potsdam
39493
2017
2017
eng
11
postprint
1
--
2017-03-03
--
Effects of sudden walking perturbations on neuromuscular reflex activity and three-dimensional motion of the trunk in healthy controls and back pain symptomatic subjects
Background
Back pain patients (BPP) show delayed muscle onset, increased co-contractions, and variability as response to quasi-static sudden trunk loading in comparison to healthy controls (H). However, it is unclear whether these results can validly be transferred to suddenly applied walking perturbations, an automated but more functional and complex movement pattern. There is an evident need to develop research-based strategies for the rehabilitation of back pain. Therefore, the investigation of differences in trunk stability between H and BPP in functional movements is of primary interest in order to define suitable intervention regimes. The purpose of this study was to analyse neuromuscular reflex activity as well as three-dimensional trunk kinematics between H and BPP during walking perturbations.
Methods
Eighty H (31m/49f;29±9yrs;174±10cm;71±13kg) and 14 BPP (6m/8f;30±8yrs;171±10cm;67±14kg) walked (1m/s) on a split-belt treadmill while 15 right-sided perturbations (belt decelerating, 40m/s2, 50ms duration; 200ms after heel contact) were randomly applied. Trunk muscle activity was assessed using a 12-lead EMG set-up. Trunk kinematics were measured using a 3-segment-model consisting of 12 markers (upper thoracic (UTA), lower thoracic (LTA), lumbar area (LA)). EMG-RMS ([%],0-200ms after perturbation) was calculated and normalized to the RMS of unperturbed gait. Latency (TON;ms) and time to maximum activity (TMAX;ms) were analysed. Total motion amplitude (ROM;[°]) and mean angle (Amean;[°]) for extension-flexion, lateral flexion and rotation were calculated (whole stride cycle; 0-200ms after perturbation) for each of the three segments during unperturbed and perturbed gait. For ROM only, perturbed was normalized to unperturbed step [%] for the whole stride as well as the 200ms after perturbation. Data were analysed descriptively followed by a student´s t-test to account for group differences. Co-contraction was analyzed between ventral and dorsal muscles (V:R) as well as side right:side left ratio (Sright:Sleft). The coefficient of variation (CV;%) was calculated (EMG-RMS;ROM) to evaluate variability between the 15 perturbations for all groups. With respect to unequal distribution of participants to groups, an additional matched-group analysis was conducted. Fourteen healthy controls out of group H were sex-, age- and anthropometrically matched (group Hmatched) to the BPP.
Results
No group differences were observed for EMG-RMS or CV analysis (EMG/ROM) (p>0.025). Co-contraction analysis revealed no differences for V:R and Srigth:Sleft between the groups (p>0.025). BPP showed an increased TON and TMAX, being significant for Mm. rectus abdominus (p = 0.019) and erector spinae T9/L3 (p = 0.005/p = 0.015). ROM analysis over the unperturbed stride cycle revealed no differences between groups (p>0.025). Normalization of perturbed to unperturbed step lead to significant differences for the lumbar segment (LA) in lateral flexion with BPP showing higher normalized ROM compared to Hmatched (p = 0.02). BPP showed a significant higher flexed posture (UTA (p = 0.02); LTA (p = 0.004)) during normal walking (Amean). Trunk posture (Amean) during perturbation showed higher trunk extension values in LTA segments for H/Hmatched compared to BPP (p = 0.003). Matched group (BPP vs. Hmatched) analysis did not show any systematic changes of all results between groups.
Conclusion
BPP present impaired muscle response times and trunk posture, especially in the sagittal and transversal planes, compared to H. This could indicate reduced trunk stability and higher loading during gait perturbations.
urn:nbn:de:kobv:517-opus4-394931
online registration
PLoS ONE (2017) Nr. 12(3):e0172334. - DOI: 10.1371/journal.pone.0174034
Universität Potsdam, Publikationsfonds
PA 2017_10
1377,49
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/39492">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Juliane Müller
Tilman Engel
Steffen Müller
Josefine Stoll
Heiner Baur
Frank Mayer
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
317
Medizin und Gesundheit
open_access
Referiert
Open Access
Department Sport- und Gesundheitswissenschaften
Universität Potsdam
https://publishup.uni-potsdam.de/files/39493/phr317_online.pdf
42240
2018
2018
eng
8
424
19
article
BioMed Central
London
1
2018-08-08
2018-08-06
--
Dose-response relationship of core-specific
sensorimotor interventions in healthy, welltrained
participants
Background: Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk, improve athletic performance and prevent back pain. However, the dose-response relationship and, therefore, the dose required to improve trunk function is still under debate. The purpose of the present trial will be to compare four different intervention strategies of sensorimotor exercises that will result in improved trunk function.
Methods/design: A single-blind, four-armed, randomized controlled trial with a 3-week (home-based) intervention phase and two measurement days pre and post intervention (M1/M2) is designed. Experimental procedures on both measurement days will include evaluation of maximum isokinetic and isometric trunk strength (extension/flexion, rotation) including perturbations, as well as neuromuscular trunk activity while performing strength testing. The primary outcome is trunk strength (peak torque). Neuromuscular activity (amplitude, latencies as a response to perturbation) serves as secondary outcome. The control group will perform a standardized exercise program of four sensorimotor exercises (three sets of 10 repetitions) in each of six training sessions (30 min duration) over 3 weeks. The intervention groups’ programs differ in the number of exercises, sets per exercise and, therefore, overall training amount (group I: six sessions, three exercises, two sets; group II: six sessions, two exercises, two sets; group III: six sessions, one exercise, three sets). The intervention programs of groups I, II and III include additional perturbations for all exercises to increase both the difficulty and the efficacy of the exercises performed. Statistical analysis will be performed after examining the underlying assumptions for parametric and non-parametric testing.
Discussion: The results of the study will be clinically relevant, not only for researchers but also for (sports) therapists, physicians, coaches, athletes and the general population who have the aim of improving trunk function.
Trials
study protocol for a (MiSpEx) randomized controlled trial
10.1186/s13063-018-2799-9
1745-6215
Universität Potsdam
PA 2018_42
1661.24
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-422414">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 499</a>
CC-BY - Namensnennung 4.0 International
Juliane Mueller
Josefine Stoll
Steffen Mueller
Frank Mayer
eng
uncontrolled
Sensorimotor training
eng
uncontrolled
Perturbation
eng
uncontrolled
Exercise
eng
uncontrolled
MiSpEx
Medizin und Gesundheit
open_access
Humanwissenschaftliche Fakultät
Referiert
Publikationsfonds der Universität Potsdam
Open Access
42241
2019
2019
eng
499
postprint
1
2019-01-10
2019-01-10
--
Dose-response relationship of core-specific
sensorimotor interventions in healthy, welltrained
participants
Background: Core-specific sensorimotor exercises are proven to enhance neuromuscular activity of the trunk, improve athletic performance and prevent back pain. However, the dose-response relationship and, therefore, the dose required to improve trunk function is still under debate. The purpose of the present trial will be to compare four different intervention strategies of sensorimotor exercises that will result in improved trunk function.
Methods/design: A single-blind, four-armed, randomized controlled trial with a 3-week (home-based) intervention phase and two measurement days pre and post intervention (M1/M2) is designed. Experimental procedures on both measurement days will include evaluation of maximum isokinetic and isometric trunk strength (extension/flexion, rotation) including perturbations, as well as neuromuscular trunk activity while performing strength testing. The primary outcome is trunk strength (peak torque). Neuromuscular activity (amplitude, latencies as a response to perturbation) serves as secondary outcome. The control group will perform a standardized exercise program of four sensorimotor exercises (three sets of 10 repetitions) in each of six training sessions (30 min duration) over 3 weeks. The intervention groups’ programs differ in the number of exercises, sets per exercise and, therefore, overall training amount (group I: six sessions, three exercises, two sets; group II: six sessions, two exercises, two sets; group III: six sessions, one exercise, three sets). The intervention programs of groups I, II and III include additional perturbations for all exercises to increase both the difficulty and the efficacy of the exercises performed. Statistical analysis will be performed after examining the underlying assumptions for parametric and non-parametric testing.
Discussion: The results of the study will be clinically relevant, not only for researchers but also for (sports) therapists, physicians, coaches, athletes and the general population who have the aim of improving trunk function.
Postprints der Universität Potsdam Humanwissenschaftliche Reihe
study protocol for a (MiSpEx) randomized controlled trial
1866-8364
urn:nbn:de:kobv:517-opus4-422414
10.25932/publishup-42241
Trials 19 (2018) 424 DOI: 10.1186/s13063-018-2799-9
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/42240">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Juliane Mueller
Josefine Stoll
Steffen Mueller
Frank Mayer
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
499
eng
uncontrolled
Sensorimotor training
eng
uncontrolled
Perturbation
eng
uncontrolled
Exercise
eng
uncontrolled
MiSpEx
Medizin und Gesundheit
open_access
Humanwissenschaftliche Fakultät
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/42241/phr499.pdf
41992
2018
2018
eng
1
16
10
13
article
Public Library of Science
San Francisco
1
2018-10-19
2018-10-19
--
General versus sports-specific injury prevention programs in athletes
Introduction
Annually, 2 million sports-related injuries are reported in Germany of which athletes contribute to a large proportion. Multiple sport injury prevention programs designed to decrease acute and overuse injuries in athletes have been proven effective. Yet, the programs’ components, general or sports-specific, that led to these positive effects are uncertain. Despite not knowing about the superiority of sports-specific injury prevention programs, coaches and athletes alike prefer more specialized rather than generalized exercise programs. Therefore, this systematic review aimed to present the available evidence on how general and sports-specific prevention programs affect injury rates in athletes.
Methods
PubMed and Web of Science were electronically searched throughout April 2018. The inclusion criteria were publication dates Jan 2006–Dec 2017, athletes (11–45 years), exercise-based injury prevention programs and injury incidence. The methodological quality was assessed with the Cochrane Collaboration assessment tools.
Results
Of the initial 6619 findings, 15 studies met the inclusion criteria. In addition, 13 studies were added from reference lists and external sources making a total of 28 studies. Of which, one used sports-specific, seven general and 20 mixed prevention strategies. Twenty-four studies revealed reduced injury rates. Of the four ineffective programs, one was general and three mixed.
Conclusion
The general and mixed programs positively affect injury rates. Sports-specific programs are uninvestigated and despite wide discussion regarding the definition, no consensus was reached. Defining such terminology and investigating the true effectiveness of such IPPs is a potential avenue for future research.
PLOS ONE
A systematic review on the effect on injury rates
10.1371/journal.pone.0205635
1932-6203
Universität Potsdam, Publikationsfonds
PA 2018_67
1568.77
online registration
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-419935">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 481</a>
CC-BY - Namensnennung 4.0 International
Hendrick Mugele
Ashley Plummer
Kathrin Steffen
Josefine Stoll
Frank Mayer
Juliane Müller
eng
uncontrolled
randomized-controlled-trial
eng
uncontrolled
cruciate ligament injury
eng
uncontrolled
amateur soccer players
eng
uncontrolled
hamstring injuries
eng
uncontrolled
training-program
eng
uncontrolled
exercise program
eng
uncontrolled
adolescent sport
eng
uncontrolled
youth football
eng
uncontrolled
team handball
eng
uncontrolled
risk-factors
Naturwissenschaften und Mathematik
Medizin und Gesundheit
open_access
Strukturbereich Kognitionswissenschaften
Referiert
Publikationsfonds der Universität Potsdam
Open Access
41993
2018
2018
eng
16
481
postprint
1
2018-11-22
2018-11-22
--
General versus sports-specific injury prevention programs in athletes
Introduction
Annually, 2 million sports-related injuries are reported in Germany of which athletes contribute to a large proportion. Multiple sport injury prevention programs designed to decrease acute and overuse injuries in athletes have been proven effective. Yet, the programs’ components, general or sports-specific, that led to these positive effects are uncertain. Despite not knowing about the superiority of sports-specific injury prevention programs, coaches and athletes alike prefer more specialized rather than generalized exercise programs. Therefore, this systematic review aimed to present the available evidence on how general and sports-specific prevention programs affect injury rates in athletes.
Methods
PubMed and Web of Science were electronically searched throughout April 2018. The inclusion criteria were publication dates Jan 2006–Dec 2017, athletes (11–45 years), exercise-based injury prevention programs and injury incidence. The methodological quality was assessed with the Cochrane Collaboration assessment tools.
Results
Of the initial 6619 findings, 15 studies met the inclusion criteria. In addition, 13 studies were added from reference lists and external sources making a total of 28 studies. Of which, one used sports-specific, seven general and 20 mixed prevention strategies. Twenty-four studies revealed reduced injury rates. Of the four ineffective programs, one was general and three mixed.
Conclusion
The general and mixed programs positively affect injury rates. Sports-specific programs are uninvestigated and despite wide discussion regarding the definition, no consensus was reached. Defining such terminology and investigating the true effectiveness of such IPPs is a potential avenue for future research.
Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
A systematic review on the effect on injury rates
urn:nbn:de:kobv:517-opus4-419935
online registration
PLOS ONE 13 (2018) 10, Art. e0205635 DOI: 10.1371/journal.pone.0205635
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/41992">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Hendrik Mugele
Ashley Plummer
Kathrin Steffen
Josefine Stoll
Frank Mayer
Juliane Müller
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
481
eng
uncontrolled
randomized-controlled-trial
eng
uncontrolled
cruciate ligament injury
eng
uncontrolled
amateur soccer players
eng
uncontrolled
hamstring injuries
eng
uncontrolled
training-program
eng
uncontrolled
exercise program
eng
uncontrolled
adolescent sport
eng
uncontrolled
youth football
eng
uncontrolled
team handball
eng
uncontrolled
risk-factors
Naturwissenschaften und Mathematik
Medizin und Gesundheit
open_access
Strukturbereich Kognitionswissenschaften
Referiert
Open Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/41993/phr481.online.pdf
42088
2018
2018
deu
117
doctoralthesis
1
--
--
2018-12-03
Gesundheitsmonitoring im Langstreckenmotorsport
Pre Participation Examination in Long distance Race car drivers
Professionelle GT Langstreckenmotorsportler (Rennfahrer) müssen den hohen motorischen und kognitiven Ansprüchen ohne Verlust der Performance während eines Rennens endgegenwirken können. Sie müssen stets, bei hoher Geschwindigkeit fokussiert und konzentriert auf ihr Auto, die Rennstrecke und ihre Gegner reagieren können. Darüber hinaus sind Rennfahrer zusätzlich durch die notwendige Kommunikation im Auto mit den Ingenieuren und Mechanikern in der Boxengasse gefordert. Daten über die tatsächliche Beanspruchung und häufig auftretende Beschwerden und/oder Verletzung von Profiathleten liegen kaum vor. Für eine möglichst gute Performance im Auto während eines Rennens ist es notwendige neben der körperlichen Beanspruchung auch die häufigen Krankheitsbilder zu kennen. Auf Basis dessen kann eine optimale Prävention oder notwendige Therapie zur möglichst schnellen Reintegration in den Sport abgeleitet und entwickelt werden. Die vorliegende Arbeit befasst sich durch ein regelmäßiges Gesundheitsmonitoring mit der Erfassung häufiger Beschwerden und oder Verletzungen im GT Langestreckenmotorsport zur Ableitung eines präventiven (trainingstherapeutischen) und therapeutischen Konzeptes. Darüber hinaus, soll über die Einschätzung der körperlichen Leistungsfähigkeit der Athleten, auf Basis der Beanspruchung im Rennfahrzeug ein mögliches Trainingskonzept in Abhängigkeit der Saison entwickelt werden.
Insgesamt wurden über 15 Jahre (2003-2017) 37 männliche Athleten aus dem GT Langstreckenmotorsport 353mal im Rahmen eines Gesundheitsmonitorings untersucht. Dabei wurden Athleten maximal 14 Jahre und mindestens 1 Jahr sportmedizinische betreut. Diese 2x im Jahr stattfindende Untersuchung beinhaltete im Wesentlichen eine sportmedizinische Untersuchung zur Einschätzung der Tauglichkeit für den Sport und die Erfassung der körperlichen Leistungsfähigkeit. Über das Gesundheitsmonitoring hinaus erfolgte die Betreuung zusätzlich an der Rennstrecke zur weiteren Erfassung der Beschwerden, Erkrankungen und Verletzungen der Athleten während ihrer sportartspezifischen Belastung. Zusammengefasst zeigen die Athleten geringe Prävalenzen und Inzidenzen der Krankheitsbilder bzw. Beschwerden. Ein Unterschied der Prävalenzen zeigt sich zwischen den Gesundheitsuntersuchungen und der Betreuung an der Rennstrecke. Die häufigsten Beschwerdebilder zeigen sich aus Orthopädie und Innerer Medizin. So sind Infekte der oberen Atemwege sowie Allergien neben Beschwerden der unteren Extremität und der Wirbelsäule am häufigsten. Demzufolge werden vorrangig physio- und trainingstherapeutische Konsequenzen abgeleitet. Eine medikamentöse Therapie erfolgt im Wesentlichen während der Rennbetreuung. Zur Reduktion der orthopädischen und internistischen Beschwerden sollten präventive Maßnahmen mehr betont werden. Die körperliche Leistungsfähigkeit zeigt im Wesentlichen über die Untersuchungsjahre eine stabile Performance für die Ausdauer-, Kraft und sensomotorische Leistungsfähigkeit. Die Ausdauerleistungsfähigkeit kann in Abhängigkeit der Sportartspezifik mit einer guten bis sehr guten Ausprägung definiert werden. Die Kraftleistungsfähigkeit und die sensomotorische Leistungsfähigkeit lassen sportartspezifische Unterschiede zu und sollte körpergewichtsbezogen betrachtet werden.
Ein sportmedizinisches und trainingstherapeutisches Konzept müsste demnach eine regelmäßige ärztlich-medizinische Untersuchung mit dem Fokus der Orthopädie, Inneren Medizin und Hals- Nasen-Ohren-Kunde beinhalten. Darüber hinaus sollte eine regelmäßige Erfassung der körperlichen Leistungsfähigkeit zur möglichst effektiven Ableitung von Trainingsinhalten oder Präventionsmaßnahmen berücksichtig werden. Auf Grundlage der hohen Reisetätigkeit und der ganzjährigen Saison könnte ein 1-2x jährlich stattfindendes Trainingslager, im Sinne eines Grundlagen- und Aufbautrainings zur Optimierung der Leistungsfähigkeit beitragen, das Konzept komplementieren. Zudem scheint eine ärztliche Rennbetreuung notwendig.
Professional long distance race car drivers (GT- Sportscars) are highly challenged regarding physical load during racing without any lost of performance. It is needed that those athletes are able to react in time in addiction to high speed and other race car drivers on the track. Studies about common injuries or overuse are rare and not longitudinal analysed. Based on known sports specific injuries or overuse, necessary prevention strategies or therapy concept are helpful for an evident Return to Sport. This study is based on prospective longitudinal Analyses of common injuries and overuse in professional race car drivers with differentiation to prevention and therapeutic concepts. Additionally, based on physical capacity (endurance, strength, sensorymotor- control) a needed training recommendation is derived. Overall 37 male professional longdistance race car drivers were analysed over 15 years (2003-2017). Therefore 353 preparticipation examinations (PPE) and physical fitness tests were included. The number of Athletes ranged between 6-19 per year with a support from 1 to 15 years. Additionally to the PPE and physical fitness tests the needed medical care at the track during race were analysed for the years 2015 and 2016.
Summarized, longdistance race car drivers are showing low Prevalence’s of injuries or overuse. Frequent complaints are infections of the upper respiratory tract, allergies and tendinopathy of the lower limb together with chronic unspecific low back pain. The therapeutic derivation on track was for the most part drug-treated. A useful consequence for the reduction of the common orthopedic and internistic complaints are preventive methods like aerobic endurance training, sleep hygiene, (eccentric) strength training and balance training. The physical capacite is stable over the years. The endurance capacity shows in dependence to the sports specific a good capacity. The strength and sensorymotor control capacity shows sports specific differences.
A sports medical and preventive/ therapeutic concept in longdistance motorsports has to include regular PPE with focus on orthopedic and internistic examinations. Additionally a regularly measurement of the physical capacity (endurance, strength and sensorymotor control) is needed for evident and individual recommendations for training and prevention. Regarding the high all year intercontinental travelling and the season over the whole year a 1-2 times organized fitness camp could compliment a sports medical concept as well as medical care on the track.
eine Analyse von Athletenprofilen, häufigen Beschwerden und deren Ableitung für präventive Trainingsprogramme im Quer- und Längsschnitt
urn:nbn:de:kobv:517-opus4-420880
online registration
Dissertation, Universität Potsdam, 2018
ZY 9152, ZX 7950
Keine öffentliche Lizenz: Unter Urheberrechtsschutz
Josefine Stoll
deu
uncontrolled
Langstreckenmotorsport
deu
uncontrolled
Gesundheitsmonitoring
deu
uncontrolled
Prävention
deu
uncontrolled
Race car driver
eng
uncontrolled
Pre participation examination
eng
uncontrolled
race car driver
eng
uncontrolled
prevention
eng
uncontrolled
longdistance racing
Medizin und Gesundheit
open_access
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
Universität Potsdam
Universität Potsdam
https://publishup.uni-potsdam.de/files/42088/stoll_diss.pdf
46767
2017
2017
eng
448
454
7
27
article
Wiley
Hoboken
1
--
--
--
Back pain prevalence in adolescent athletes
The research aimed to investigate back pain (BP) prevalence in a large cohort of young athletes with respect to age, gender, and sport discipline. BP (within the last 7days) was assessed with a face scale (face 1-2=no pain; face 3-5=pain) in 2116 athletes (m/f 61%/39%; 13.3 +/- 1.7years; 163.0 +/- 11.8cm; 52.6 +/- 13.9kg; 4.9 +/- 2.7 training years; 8.4 +/- 5.7 training h/week). Four different sports categories were devised (a: combat sports, b: game sports; c: explosive strength sport; d: endurance sport). Analysis was described descriptively, regarding age, gender, and sport. In addition, 95% confidence intervals (CI) were calculated. About 168 (8%) athletes were allocated into the BP group. About 9% of females and 7% of males reported BP. Athletes, 11-13years, showed a prevalence of 2-4%; while prevalence increased to 12-20% in 14- to 17-year olds. Considering sport discipline, prevalence ranged from 3% (soccer) to 14% (canoeing). Prevalences in weight lifting, judo, wrestling, rowing, and shooting were 10%; in boxing, soccer, handball, cycling, and horse riding, 6%. 95% CI ranged between 0.08-0.11. BP exists in adolescent athletes, but is uncommon and shows no gender differences. A prevalence increase after age 14 is obvious. Differentiated prevention programs in daily training routines might address sport discipline-specific BP prevalence.
Scandinavian journal of medicine & science in sports
10.1111/sms.12664
26892028
0905-7188
1600-0838
wos:2017
WOS:000395709400009
Muller, J (reprint author), Univ Outpatient Clin, Sports Med & Sports Orthopaed, Neuen Palais 10,House 12, D-14469 Potsdam, Germany., thormei@uni-potsdam.de
National Institute of Sport Science of Germany [BISp IIA 1-080126/09-13]
importub
2020-04-20T04:13:01+00:00
filename=package.tar
1f8725c84bc22f484e8b42d71a19a60f
Juliane Müller
Steffen Müller
Josefine Stoll
K. Fröhlich
Christoph Otto
Frank Mayer
eng
uncontrolled
Young athletes
eng
uncontrolled
back pain
eng
uncontrolled
prevalence
eng
uncontrolled
types of sports
Referiert
Department Sport- und Gesundheitswissenschaften
Import
Institut für Sportmedizin und Prävention
54957
2021
2022
eng
1
9
9
postprint
Universitätsverlag Potsdam
Potsdam
1
2022-05-10
2022-05-10
--
Whole-Body EMS Superimposed Walking and Nordic Walking on a Treadmill—Determination of Exercise Intensity to Conventional Exercise
Electrical muscle stimulation (EMS) is an increasingly popular training method and has become the focus of research in recent years. New EMS devices offer a wide range of mobile applications for whole-body EMS (WB-EMS) training, e.g., the intensification of dynamic low-intensity endurance exercises through WB-EMS. The present study aimed to determine the differences in exercise intensity between WB-EMS-superimposed and conventional walking (EMS-CW), and CON and WB-EMS-superimposed Nordic walking (WB-EMS-NW) during a treadmill test. Eleven participants (52.0 ± years; 85.9 ± 7.4 kg, 182 ± 6 cm, BMI 25.9 ± 2.2 kg/m2) performed a 10 min treadmill test at a given velocity (6.5 km/h) in four different test situations, walking (W) and Nordic walking (NW) in both conventional and WB-EMS superimposed. Oxygen uptake in absolute (VO2) and relative to body weight (rel. VO2), lactate, and the rate of perceived exertion (RPE) were measured before and after the test. WB-EMS intensity was adjusted individually according to the feedback of the participant. The descriptive statistics were given in mean ± SD. For the statistical analyses, one-factorial ANOVA for repeated measures and two-factorial ANOVA [factors include EMS, W/NW, and factor combination (EMS*W/NW)] were performed (α = 0.05). Significant effects were found for EMS and W/NW factors for the outcome variables VO2 (EMS: p = 0.006, r = 0.736; W/NW: p < 0.001, r = 0.870), relative VO2 (EMS: p < 0.001, r = 0.850; W/NW: p < 0.001, r = 0.937), and lactate (EMS: p = 0.003, r = 0.771; w/NW: p = 0.003, r = 0.764) and both the factors produced higher results. However, the difference in VO2 and relative VO2 is within the range of biological variability of ± 12%. The factor combination EMS*W/NW is statistically non-significant for all three variables. WB-EMS resulted in the higher RPE values (p = 0.035, r = 0.613), RPE differences for W/NW and EMS*W/NW were not significant. The current study results indicate that WB-EMS influences the parameters of exercise intensity. The impact on exercise intensity and the clinical relevance of WB-EMS-superimposed walking (WB-EMS-W) exercise is questionable because of the marginal differences in the outcome variables.
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
10.25932/publishup-54957
urn:nbn:de:kobv:517-opus4-549575
1866-8364
715417
Version of record
Verch, Ronald
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/54956">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
false
true
CC-BY - Namensnennung 4.0 International
Ronald Verch
Josefine Stoll
Miralem Hadzic
Andrew Quarmby
Heinz Völler
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
760
eng
uncontrolled
electrical muscle stimulation
eng
uncontrolled
walking
eng
uncontrolled
Nordic walking
eng
uncontrolled
treadmill
eng
uncontrolled
exercise intensity
Psychologie
open_access
Department Psychologie
Green Open-Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/54957/phr760.pdf
54286
2021
2022
eng
1
8
8
postprint
Universitätsverlag Potsdam
Potsdam
1
2022-03-11
2022-03-11
--
Intraindividual Doppler Flow Response to Exercise Differs Between Symptomatic and Asymptomatic Achilles Tendons
Objective: This study investigated intraindividual differences of intratendinous blood flow (IBF) in response to running exercise in participants with Achilles tendinopathy.
Design: This is a cross-sectional study.
Setting: The study was conducted at the University Outpatient Clinic.
Participants: Sonographic detectable intratendinous blood flow was examined in symptomatic and contralateral asymptomatic Achilles tendons of 19 participants (42 ± 13 years, 178 ± 10 cm, 76 ± 12 kg, VISA-A 75 ± 16) with clinically diagnosed unilateral Achilles tendinopathy and sonographic evident tendinosis.
Intervention: IBF was assessed using Doppler ultrasound “Advanced Dynamic Flow” before (Upre) and 5, 30, 60, and 120 min (U5–U120) after a standardized submaximal constant load run.
Main Outcome Measure: IBF was quantified by counting the number (n) of vessels in each tendon.
Results: At Upre, IBF was higher in symptomatic compared with asymptomatic tendons [mean 6.3 (95% CI: 2.8–9.9) and 1.7 (0.4–2.9), p < 0.01]. Overall, 63% of symptomatic and 47% of asymptomatic Achilles tendons responded to exercise, whereas 16 and 11% showed persisting IBF and 21 and 42% remained avascular throughout the investigation. At U5, IBF increased in both symptomatic and asymptomatic tendons [difference to baseline: 2.4 (0.3–4.5) and 0.9 (0.5–1.4), p = 0.05]. At U30 to U120, IBF was still increased in symptomatic but not in asymptomatic tendons [mean difference to baseline: 1.9 (0.8–2.9) and 0.1 (-0.9 to 1.2), p < 0.01].
Conclusion: Irrespective of pathology, 47–63% of Achilles tendons responded to exercise with an immediate acute physiological IBF increase by an average of one to two vessels (“responders”). A higher amount of baseline IBF (approximately five vessels) and a prolonged exercise-induced IBF response found in symptomatic ATs indicate a pain-associated altered intratendinous “neovascularization.”
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
10.25932/publishup-54286
urn:nbn:de:kobv:517-opus4-542865
1866-8364
Risch, Lucie
617497
Version of record
<a href="http://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/54285">Bibliographieeintrag der Originalveröffentlichung/Quelle</a>
CC-BY - Namensnennung 4.0 International
Lucie Risch
Josefine Stoll
Anne Schomöller
Tilman Engel
Frank Mayer
Michael Cassel
Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe
746
eng
uncontrolled
achilles tendinopathy
eng
uncontrolled
tendinosis
eng
uncontrolled
neovascularization
eng
uncontrolled
ultrasound
eng
uncontrolled
advanced dynamic flow
eng
uncontrolled
sonography
Medizin und Gesundheit
open_access
Humanwissenschaftliche Fakultät
Referiert
Green Open-Access
Universität Potsdam
https://publishup.uni-potsdam.de/files/54286/phr746.pdf
52037
2018
2018
eng
726
732
7
9
39
article
Thieme
Stuttgart
1
2018-06-25
2018-06-25
--
Incidence of achilles and patellar tendinopathy in adolescent elite athletes
The study investigated the incidence of Achilles and patellar tendinopathy in adolescent elite athletes and non-athletic controls. Furthermore, predictive and associated factors for tendinopathy development were analyzed. The prospective study consisted of two measurement days (M1/M2) with an interval of 3.2 +/- 0.9 years. 157 athletes (12.1 +/- 0.7 years) and 25 controls (13.3 +/- 0.6 years) without Achilles/patellar tendinopathy were included at Ml. Clinical and ultrasound examinations of both Achilles (AT) and patellar tendons (PT) were performed. Main outcome measures were incidence tendinopathy and structural intratendinous alterations (hypo-/hyperechogenicity, vascularization) at M2 [%]. Incidence of Achilles tendinopathy was 1% in athletes and 0% in controls. Patellar tendinopathy was more frequent in athletes (13 %)than in controls (4%). Incidence of intratendinous alterations in ATs was 1-2% in athletes and 0 % in controls, whereas in PTs it was 4-6 % in both groups (p >0.05). Intratendinous alterations at M2 were associated with patellar tendinopathy in athletes (p <= 0.01). Intratendinous alterations at M1, anthropometric data, training amount, sports or sex did not predict tendinopathy development (p>0.05). Incidence often dinopathy and intratendinous alterations in adolescent athletes is low in ATs and more common in PTs. Development of intratendinous alterations in PT is associated with tend in opathy. However, predictive factors could not be identified.
International journal of sports medicine
10.1055/a-0633-9098
29940667
0172-4622
1439-3964
wos:2018
WOS:000440446200009
Cassel, M (reprint author), Univ Potsdam, Outpatient Clin, Sports Med & Sports Orthopaed, Neuen Palais 10, D-14469 Potsdam 12, Germany., mcassel@uni-potsdam.de
2021-10-05T08:32:42+00:00
sword
importub
filename=package.tar
e64acca2c829c30733d941719345bee3
false
true
Michael Cassel
Lucie Risch
Konstantina Intziegianni
Juliane Mueller
Josefine Stoll
Pia Brecht
Frank Mayer
eng
uncontrolled
epidemiology
eng
uncontrolled
young athletes
eng
uncontrolled
sonography
eng
uncontrolled
vascularization
eng
uncontrolled
hypoechogenicities
Medizin und Gesundheit
Import
Fakultät für Gesundheitswissenschaften
54956
2021
2021
eng
1
9
9
12
article
Frontiers Research Foundation
Lausanne, Schweiz
1
2021-10-04
2021-10-04
--
Whole-Body EMS Superimposed Walking and Nordic Walking on a Treadmill—Determination of Exercise Intensity to Conventional Exercise
Electrical muscle stimulation (EMS) is an increasingly popular training method and has become the focus of research in recent years. New EMS devices offer a wide range of mobile applications for whole-body EMS (WB-EMS) training, e.g., the intensification of dynamic low-intensity endurance exercises through WB-EMS. The present study aimed to determine the differences in exercise intensity between WB-EMS-superimposed and conventional walking (EMS-CW), and CON and WB-EMS-superimposed Nordic walking (WB-EMS-NW) during a treadmill test. Eleven participants (52.0 ± years; 85.9 ± 7.4 kg, 182 ± 6 cm, BMI 25.9 ± 2.2 kg/m2) performed a 10 min treadmill test at a given velocity (6.5 km/h) in four different test situations, walking (W) and Nordic walking (NW) in both conventional and WB-EMS superimposed. Oxygen uptake in absolute (VO2) and relative to body weight (rel. VO2), lactate, and the rate of perceived exertion (RPE) were measured before and after the test. WB-EMS intensity was adjusted individually according to the feedback of the participant. The descriptive statistics were given in mean ± SD. For the statistical analyses, one-factorial ANOVA for repeated measures and two-factorial ANOVA [factors include EMS, W/NW, and factor combination (EMS*W/NW)] were performed (α = 0.05). Significant effects were found for EMS and W/NW factors for the outcome variables VO2 (EMS: p = 0.006, r = 0.736; W/NW: p < 0.001, r = 0.870), relative VO2 (EMS: p < 0.001, r = 0.850; W/NW: p < 0.001, r = 0.937), and lactate (EMS: p = 0.003, r = 0.771; w/NW: p = 0.003, r = 0.764) and both the factors produced higher results. However, the difference in VO2 and relative VO2 is within the range of biological variability of ± 12%. The factor combination EMS*W/NW is statistically non-significant for all three variables. WB-EMS resulted in the higher RPE values (p = 0.035, r = 0.613), RPE differences for W/NW and EMS*W/NW were not significant. The current study results indicate that WB-EMS influences the parameters of exercise intensity. The impact on exercise intensity and the clinical relevance of WB-EMS-superimposed walking (WB-EMS-W) exercise is questionable because of the marginal differences in the outcome variables.
Frontiers in physiology / Frontiers Research Foundation
10.3389/fphys.2021.715417
1664-042X
34671269
715417
Verch, Ronald
<a href="https://doi.org/10.25932/publishup-54957">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 760</a>
WOS:000717154500001
2564217-0
Verch, R (corresponding author), Univ Potsdam, Univ Outpatient Clin Potsdam, Dept Sports & Hlth Sci, Clin Exercise Sci, Potsdam, Germany.
CC-BY - Namensnennung 4.0 International
Ronald Verch
Josefine Stoll
Miralem Hadzic
Andrew Quarmby
Heinz Völler
eng
uncontrolled
electrical muscle stimulation
eng
uncontrolled
walking
eng
uncontrolled
Nordic walking
eng
uncontrolled
treadmill
eng
uncontrolled
exercise intensity
Medizin und Gesundheit
Referiert
Publikationsfonds der Universität Potsdam
Department Sport- und Gesundheitswissenschaften
Gold Open-Access
Fakultät für Gesundheitswissenschaften