@article{HadzicEichlerVoelleretal.2022,
  author    = {Hadzic, Miralem and Eichler, Sarah and V{\"o}ller, Heinz and Salzwedel, Annett},
  title     = {Akzeptanz und Nutzung eines telemedizinischen Rehabilitationsprogramms f{\"u}r Patienten mit Knie- oder H{\"u}ft-Totalendoprothese},
  series = {Bewegungstherapie und Gesundheitssport : B \& G ; offizielles Organ des Deutschen Verbandes f{\"u}r Gesundheitssport und Sporttherapie e.V. (DVGS)},
  volume    = {38},
  journal   = {Bewegungstherapie und Gesundheitssport : B \& G ; offizielles Organ des Deutschen Verbandes f{\"u}r Gesundheitssport und Sporttherapie e.V. (DVGS)},
  number    = {01},
  publisher = {Thieme},
  address   = {Stuttgart},
  organization    = {Arbeitsgrp ReMove-It},
  issn      = {1613-0863},
  doi       = {10.1055/a-1714-3629},
  pages     = {20 -- 25},
  year      = {2022},
  abstract  = {Objective of the study: The long-term use of telemedical programs depends not only on their effectiveness, but also on patient acceptance and satisfaction. The effectiveness of telemedical exercise therapy for patients after implantation of a total knee or hip prosthesis and subsequent rehabilitation has already been examined in a randomized controlled study. This article focuses on the patient's acceptance and usage behaviour with regard to the tele-rehabilitation system. Methodology: 48 patients (53 +/- 7 years; 26 women; 35 hip/13 knee TEP) were questioned after a three-month telemedical movement therapy using the Telehealth Usability Questionnaire (TUQ) to determine the acceptance of the technology. The questionnaire consisted of 21 items (seven-point Likert scale) in six scales (e. g. usefulness, quality of interactions, reliability). System-specific questions were summarized on an additional scale. The results were presented as a percentage of the scale (100 estimates complete agreement). The usage behaviour was examined using system-generated process data for training and integrated voice/text messages. Results: The TUQ scales "Usefulness" (Mdn 95.2) and "Ease of use and learnability" (Mdn 92.9) were rated the highest, while "Reliability" (Mdn 57.1) and "Quality of interactions" ( Mdn 71.4) showed the lowest levels. The system-specific scale was placed in the upper quartile (Mdn 85.7). In the first week, 39 patients (81\%) and in the second 45 patients (94\%) performed at least one training exercise with the system. The proportion of active patients (>= 1 exercise/week) decreased in the further course to 75\% (n=36) in the 7th week and 48\% (n=23) in the 12th week. The system communication options were initially used frequently after the start of therapy: in the first week, 42 patients (88\%) sent messages, 47 patients (98\%) received messages from their therapist respectively. In week 7, 9 (19\%) and 13 (27\%) patients sent/received messages via the system respectively. Conclusion: Most of the patients perceived telemedical movement therapy as useful and user-friendly and seemed to be largely satisfied with the system. This proved to be well suited for short-term use of 6 to 8 weeks following subsequent rehabilitation.},
  language  = {de}
}
@article{HadzicEckesteinSchugardt2019,
  author    = {Hadzic, Miralem and Eckestein, Max Lennart and Schugardt, Monique},
  title     = {The Impact of Sodium Bicarbonate on Performance in Response to Exercise Duration in Athletes},
  series = {Journal of sports science \& medicine : JSSM},
  journal   = {Journal of sports science \& medicine : JSSM},
  number    = {18},
  publisher = {Department of Sports Medicine, Medical Faculty of Uludag University},
  address   = {Bursa, Turkey},
  issn      = {1303-2968},
  pages     = {271 -- 281},
  year      = {2019},
  abstract  = {According to recent literature sodium bicarbonate (NaHCO3) has been proposed as a performance enhancing aid by reducing acidosis during exercise. The aim of the current review is to investigate if the duration of exercise is an essential factor for the effect of NaHCO3. To collect the latest studies from electronic database of PubMed, study publication time was restricted from December 2006 to December 2016. The search was updated in July 2018. The studies were divided into exercise durations of > 4 or ≤ 4 minutes for easier comparability of their effects in different exercises. Only randomized controlled trials were included in this review. Of the 775 studies, 35 met the inclusion criteria. Study design, subjects, effects as well as outcome criteria were inconsistent throughout the studies. Seventeen of these studies reported performance enhancing effects after supplementing NaHCO3. Eleven of twenty studies with exercise duration of ≤ 4 minutes showed positive and four diverse results after supplementing NaHCO3. On the other hand six of fifteen studies with an exercise duration of >4 minutes showed performance enhancing and two studies showed diverse results. Consequently, the duration of exercise might be influential for inducing a performance enhancing effect when supplementing NaHCO3, but to which extent, remains unclear due to the inconsistencies in the study results.},
  language  = {en}
}
@article{EichlerSalzwedelRabeetal.2019,
  author    = {Eichler, Sarah and Salzwedel, Annett and Rabe, Sophie and Mueller, Steffen and Mayer, Frank and Wochatz, Monique and Hadzic, Miralem and John, Michael and Wegscheider, Karl and V{\"o}ller, Heinz},
  title     = {The Effectiveness of Telerehabilitation as a Supplement to Rehabilitation in Patients After Total Knee or Hip Replacement},
  series = {JMIR Rehabilitation and Assistive Technologies},
  volume    = {6},
  journal   = {JMIR Rehabilitation and Assistive Technologies},
  number    = {2},
  publisher = {jmir rehab},
  address   = {Toronto},
  issn      = {2369-2529},
  doi       = {10.2196/14236},
  pages     = {12},
  year      = {2019},
  abstract  = {Background: Telerehabilitation can contribute to the maintenance of successful rehabilitation regardless of location and time. The aim of this study was to investigate a specific three-month interactive telerehabilitation routine regarding its effectiveness in assisting patients with physical functionality and with returning to work compared to typical aftercare. Objective: The aim of the study was to investigate a specific three-month interactive telerehabilitation with regard to effectiveness in functioning and return to work compared to usual aftercare. Methods: From August 2016 to December 2017, 111 patients (mean 54.9 years old; SD 6.8; 54.3\% female) with hip or knee replacement were enrolled in the randomized controlled trial. At discharge from inpatient rehabilitation and after three months, their distance in the 6-minute walk test was assessed as the primary endpoint. Other functional parameters, including health related quality of life, pain, and time to return to work, were secondary endpoints. Results: Patients in the intervention group performed telerehabilitation for an average of 55.0 minutes (SD 9.2) per week. Adherence was high, at over 75\%, until the 7th week of the three-month intervention phase. Almost all the patients and therapists used the communication options. Both the intervention group (average difference 88.3 m; SD 57.7; P=.95) and the control group (average difference 79.6 m; SD 48.7; P=.95) increased their distance in the 6-minute-walk-test. Improvements in other functional parameters, as well as in quality of life and pain, were achieved in both groups. The higher proportion of working patients in the intervention group (64.6\%; P=.01) versus the control group (46.2\%) is of note. Conclusions: The effect of the investigated telerehabilitation therapy in patients following knee or hip replacement was equivalent to the usual aftercare in terms of functional testing, quality of life, and pain. Since a significantly higher return-to-work rate could be achieved, this therapy might be a promising supplement to established aftercare.},
  language  = {en}
}
@article{SalzwedelReibisHadzicetal.2019,
  author    = {Salzwedel, Annett and Reibis, Rona Katharina and Hadzic, Miralem and Buhlert, Hermann and V{\"o}ller, Heinz},
  title     = {Patients' expectations of returning to work, co-morbid disorders and work capacity at discharge from cardiac rehabilitation},
  series = {Vascular Health and Risk Management},
  volume    = {15},
  journal   = {Vascular Health and Risk Management},
  publisher = {Dove Medical Press},
  address   = {Albany, Auckland},
  issn      = {1176-6344},
  doi       = {10.2147/VHRM.S216039},
  pages     = {301 -- 308},
  year      = {2019},
  abstract  = {Objective: We aimed to characterize patients after an acute cardiac event regarding their negative expectations around returning to work and the impact on work capacity upon discharge from cardiac rehabilitation (CR). Methods: We analyzed routine data of 884 patients (52±7 years, 76\% men) who attended 3 weeks of inpatient CR after an acute coronary syndrome (ACS) or cardiac surgery between October 2013 and March 2015. The primary outcome was their status determining their capacity to work (fit vs unfit) at discharge from CR. Further, sociodemographic data (eg, age, sex, and education level), diagnoses, functional data (eg, exercise stress test and 6-min walking test [6MWT]), the Hospital Anxiety and Depression Scale (HADS) and self-assessment of the occupational prognosis (negative expectations and/or unemployment, W{\"u}rzburger screening) at admission to CR were considered. Results: A negative occupational prognosis was detected in 384 patients (43\%). Out of these, 368 (96\%) expected not to return to work after CR and/or were unemployed before CR at 29\% (n=113). Affected patients showed a reduced exercise capacity (bicycle stress test: 100 W vs 118 W, P<0.01; 6MWT: 380 m vs 421 m, P<0.01) and were more likely to receive a depression diagnosis (12\% vs 3\%, P<0.01), as well as higher levels on the HADS. At discharge from CR, 21\% of this group (n=81) were fit for work (vs 35\% of patients with a normal occupational prognosis (n=175, P<0.01)). Sick leave before the cardiac event (OR 0.4, 95\% CI 0.2-0.6, P<0.01), negative occupational expectations (OR 0.4, 95\% CI 0.3-0.7, P<0.01) and depression (OR 0.3, 95\% CI 0.1-0.8, P=0.01) reduced the likelihood of achieving work capacity upon discharge. In contrast, higher exercise capacity was positively associated. Conclusion: Patients with a negative occupational prognosis often revealed a reduced physical performance and suffered from a high psychosocial burden. In addition, patients' occupational expectations were a predictor of work capacity at discharge from CR. Affected patients should be identified at admission to allow for targeted psychosocial care.},
  language  = {en}
}
@article{MuellerHadzicMugeleetal.2017,
  author    = {M{\"u}ller, Juliane and Hadzic, Miralem and Mugele, Hendrik and Stoll, Josefine and M{\"u}ller, Steffen and Mayer, Frank},
  title     = {Effect of high-intensity perturbations during core-specific sensorimotor exercises on trunk muscle activation},
  series = {Journal of biomechanics},
  volume    = {70},
  journal   = {Journal of biomechanics},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0021-9290},
  doi       = {10.1016/j.jbiomech.2017.12.013},
  pages     = {212 -- 218},
  year      = {2017},
  abstract  = {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.},
  language  = {en}
}
@misc{SalzwedelHadzicBuhlertetal.2018,
  author    = {Salzwedel, Annett and Hadzic, Miralem and Buhlert, Hermann and V{\"o}ller, Heinz},
  title     = {Impact of self-assessment of return to work on employable discharge from multi-component cardiac rehabilitation},
  series = {European heart journal},
  volume    = {39},
  journal   = {European heart journal},
  publisher = {Oxford Univ. Press},
  address   = {Oxford},
  issn      = {0195-668X},
  pages     = {21 -- 22},
  year      = {2018},
  abstract  = {Impact of self-assessment of return to work on employable discharge from multi-component cardiac rehabilitation. Retrospective unicentric analysis of routine data from cardiac rehabilitation in patients below 65 years of age. Presentation in the "Cardiovascular rehabilitation revisited" high impact abstract session during ESC Congress 2018.},
  language  = {en}
}
@misc{HadzicEcksteinSchugardt2019,
  author    = {Hadzic, Miralem and Eckstein, Max Lennart and Schugardt, Monique},
  title     = {The Impact of Sodium Bicarbonate on Performance in Response to Exercise Duration in Athletes},
  series = {Potsprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Potsprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {548},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-42807},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-428078},
  pages     = {11},
  year      = {2019},
  abstract  = {According to recent literature sodium bicarbonate (NaHCO3) has been proposed as a performance enhancing aid by reducing acidosis during exercise. The aim of the current review is to investigate if the duration of exercise is an essential factor for the effect of NaHCO3. To collect the latest studies from electronic database of PubMed, study publication time was restricted from December 2006 to December 2016. The search was updated in July 2018. The studies were divided into exercise durations of > 4 or ≤ 4 minutes for easier comparability of their effects in different exercises. Only randomized controlled trials were included in this review. Of the 775 studies, 35 met the inclusion criteria. Study design, subjects, effects as well as outcome criteria were inconsistent throughout the studies. Seventeen of these studies reported performance enhancing effects after supplementing NaHCO3. Eleven of twenty studies with exercise duration of ≤ 4 minutes showed positive and four diverse results after supplementing NaHCO3. On the other hand six of fifteen studies with an exercise duration of >4 minutes showed performance enhancing and two studies showed diverse results. Consequently, the duration of exercise might be influential for inducing a performance enhancing effect when supplementing NaHCO3, but to which extent, remains unclear due to the inconsistencies in the study results.},
  language  = {en}
}
@misc{SalzwedelReibisHadzicetal.2019,
  author    = {Salzwedel, Annett and Reibis, Rona Katharina and Hadzic, Miralem and Buhlert, Hermann and V{\"o}ller, Heinz},
  title     = {Patients' expectations of returning to work, co-morbid disorders and work capacity at discharge from cardiac rehabilitation},
  series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  number    = {574},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-43726},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437263},
  pages     = {301 -- 308},
  year      = {2019},
  abstract  = {Objective: We aimed to characterize patients after an acute cardiac event regarding their negative expectations around returning to work and the impact on work capacity upon discharge from cardiac rehabilitation (CR). Methods: We analyzed routine data of 884 patients (52±7 years, 76\% men) who attended 3 weeks of inpatient CR after an acute coronary syndrome (ACS) or cardiac surgery between October 2013 and March 2015. The primary outcome was their status determining their capacity to work (fit vs unfit) at discharge from CR. Further, sociodemographic data (eg, age, sex, and education level), diagnoses, functional data (eg, exercise stress test and 6-min walking test [6MWT]), the Hospital Anxiety and Depression Scale (HADS) and self-assessment of the occupational prognosis (negative expectations and/or unemployment, W{\"u}rzburger screening) at admission to CR were considered. Results: A negative occupational prognosis was detected in 384 patients (43\%). Out of these, 368 (96\%) expected not to return to work after CR and/or were unemployed before CR at 29\% (n=113). Affected patients showed a reduced exercise capacity (bicycle stress test: 100 W vs 118 W, P<0.01; 6MWT: 380 m vs 421 m, P<0.01) and were more likely to receive a depression diagnosis (12\% vs 3\%, P<0.01), as well as higher levels on the HADS. At discharge from CR, 21\% of this group (n=81) were fit for work (vs 35\% of patients with a normal occupational prognosis (n=175, P<0.01)). Sick leave before the cardiac event (OR 0.4, 95\% CI 0.2-0.6, P<0.01), negative occupational expectations (OR 0.4, 95\% CI 0.3-0.7, P<0.01) and depression (OR 0.3, 95\% CI 0.1-0.8, P=0.01) reduced the likelihood of achieving work capacity upon discharge. In contrast, higher exercise capacity was positively associated. Conclusion: Patients with a negative occupational prognosis often revealed a reduced physical performance and suffered from a high psychosocial burden. In addition, patients' occupational expectations were a predictor of work capacity at discharge from CR. Affected patients should be identified at admission to allow for targeted psychosocial care.},
  language  = {en}
}
@misc{AppiahDwomohMuellerHadzicetal.2017,
  author    = {Appiah-Dwomoh, Edem Korkor and M{\"u}ller, Steffen and Hadzic, Miralem and Mayer, Frank},
  title     = {Star Excursion Balance Test in young athletes with back pain},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-400441},
  pages     = {11},
  year      = {2017},
  abstract  = {The Star Excursion Balance Test (SEBT) is effective in measuring dynamic postural control (DPC). This research aimed to determine whether DPC measured by the SEBT in young athletes (YA) with back pain (BP) is different from those without BP (NBP). 53 BP YA and 53 NBP YA matched for age, height, weight, training years, training sessions/week and training minutes/session were studied. Participants performed 4 practice trials after which 3 measurements in the anterior, posteromedial and posterolateral SEBT reach directions were recorded. Normalized reach distance was analyzed using the mean of all 3 measurements. There was no statistical significant difference (p > 0.05) between the reach distance of BP (87.2 ± 5.3, 82.4 ± 8.2, 78.7 ± 8.1) and NBP (87.8 ± 5.6, 82.4 ± 8.0, 80.0 ± 8.8) in the anterior, posteromedial and posterolateral directions respectively. DPC in YA with BP, as assessed by the SEBT, was not different from NBP YA.},
  language  = {en}
}
@misc{EichlerSalzwedelRabeetal.2019,
  author    = {Eichler, Sarah and Salzwedel, Annett and Rabe, Sophie and Mueller, Steffen and Mayer, Frank and Wochatz, Monique and Hadzic, Miralem and John, Michael and Wegscheider, Karl and V{\"o}ller, Heinz},
  title     = {The Effectiveness of Telerehabilitation as a Supplement to Rehabilitation in Patients After Total Knee or Hip Replacement},
  series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {589},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-44096},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-440965},
  pages     = {14},
  year      = {2019},
  abstract  = {Background: Telerehabilitation can contribute to the maintenance of successful rehabilitation regardless of location and time. The aim of this study was to investigate a specific three-month interactive telerehabilitation routine regarding its effectiveness in assisting patients with physical functionality and with returning to work compared to typical aftercare. Objective: The aim of the study was to investigate a specific three-month interactive telerehabilitation with regard to effectiveness in functioning and return to work compared to usual aftercare. Methods: From August 2016 to December 2017, 111 patients (mean 54.9 years old; SD 6.8; 54.3\% female) with hip or knee replacement were enrolled in the randomized controlled trial. At discharge from inpatient rehabilitation and after three months, their distance in the 6-minute walk test was assessed as the primary endpoint. Other functional parameters, including health related quality of life, pain, and time to return to work, were secondary endpoints. Results: Patients in the intervention group performed telerehabilitation for an average of 55.0 minutes (SD 9.2) per week. Adherence was high, at over 75\%, until the 7th week of the three-month intervention phase. Almost all the patients and therapists used the communication options. Both the intervention group (average difference 88.3 m; SD 57.7; P=.95) and the control group (average difference 79.6 m; SD 48.7; P=.95) increased their distance in the 6-minute-walk-test. Improvements in other functional parameters, as well as in quality of life and pain, were achieved in both groups. The higher proportion of working patients in the intervention group (64.6\%; P=.01) versus the control group (46.2\%) is of note. Conclusions: The effect of the investigated telerehabilitation therapy in patients following knee or hip replacement was equivalent to the usual aftercare in terms of functional testing, quality of life, and pain. Since a significantly higher return-to-work rate could be achieved, this therapy might be a promising supplement to established aftercare.},
  language  = {en}
}