37947
2014
2014
eng
A129
A129
1
3
76
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Chronic stress measurement methods and their comparability
Psychosomatic medicine
0033-3174
1534-7796
wos:2014
72nd Annual Meeting of the American-Psychosomatic-Society
MAR 12-15, 2014
WOS:000334235100536
San Francisco, CA
Pia-Maria Wippert
Jessie De Witt Huberts
Jasmin Honold
Caroline Holzmann
Michael V. Rector
Frank Mayer
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
37910
2014
2014
eng
769
777
9
5
33
article
American Institute of Ultrasound in Medicine
Laurel
1
--
--
--
Inter-rater reliability and measurement error of sonographic muscle architecture assessments
Objectives-Sonography of muscle architecture provides physicians and researchers with information about muscle function and muscle-related disorders. Inter-rater reliability is a crucial parameter in daily clinical routines. The aim of this study was to assess the inter-rater reliability of sonographic muscle architecture assessments and quantification of errors that arise from inconsistent probe positioning and image interpretation.
Results-Inter-rater reliability was good overall (ICC, 0.77-0.90; IRV, 9.0%-13.4%; bias LoA, 0.2 +/- 0.2-1.7 +/- 3.0). Superior and inferior pennation angles showed high systematic bias and LoA in all setups, ranging from 2.0 degrees +/- 2.2 degrees to 3.4 degrees +/- 4.1 degrees. The highest IRV was found for muscle thickness (13.4%). "When the probe position was standardized, the SEM for muscle thickness decreased from 0.1 to 0.05 cm.
Conclusions-Sonographic examination of muscle architecture of the medial gastrocnemius has good to high reliability. In contrast to pennation angle measurements, length measurements can be improved by standardization of the probe position.
Journal of ultrasound in medicine
10.7863/ultra.33.5.769
24764331
0278-4297
1550-9613
wos:2014
WOS:000335620700003
Cassel, M (reprint author), Univ Potsdam, Univ Outpatient Clin, Neuen Palais 10,Haus 12, D-14469 Potsdam, Germany., mcassel@uni-potsdam.de
Niklas König
Michael Cassel
Konstantina Intziegianni
Frank Mayer
eng
uncontrolled
gastrocnemius muscle
eng
uncontrolled
inter-rater variability
eng
uncontrolled
muscle architecture
eng
uncontrolled
musculoskeletal ultrasound
eng
uncontrolled
sonography
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37877
2014
2014
eng
927
928
2
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Intra- and inter-rater reliability of sonographic cross-sectional area measurements in asymptomatic patella tendons
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:000339115906169
Atlanta, GA
Antje Reschke
Michael Cassel
Konstantina Intziegianni
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
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
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
37873
2014
2014
eng
631
632
3
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Reliability and day-to-day variability of peak fat oxidation during treadmill ergometry
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:000339115904165
Atlanta, GA
<a href="http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-407337">Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Humanwissenschaftliche Reihe ; 423</a>
Raul De Souza Silveira
Anja Carlsohn
Georg Langen
Christoph Otto
Gerrit Hain
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37872
2014
2014
eng
539
539
1
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Reliability of ultrasound measurements for subcutaneous adipose tissue in elite canoe athletes
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:000339115903327
Atlanta, GA
Stephan Kopinski
Tilman Engel
Michael Cassel
Anja Carlsohn
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention
37871
2014
2014
eng
539
539
1
5
46
conferenceobject
Lippincott Williams & Wilkins
Philadelphia
1
--
--
--
Correlation of sonographic subcutaneous adipose tissue measurements with air displacement plethysmography and calipermetry
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:000339115903326
Atlanta, GA
Tilman Engel
Stephan Kopinski
Anja Carlsohn
Michael Cassel
Frank Mayer
Referiert
Department Sport- und Gesundheitswissenschaften
Institut für Sportmedizin und Prävention