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Tytuł artykułu

Biomechanical characteristics of the jump down of healthy subjects and patients with knee injuries

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: The aim of this study is to investigate the drop jump performance of male patients who underwent ACLR and a control group using combined data acquisition system. Methods: A total of 28 male subjects aged 20 to 26 were studied: 22 did not show and were not diagnosed with any knee joint dysfunction (the control group) and six men who underwent ACLR of the left limb (group of patients). The control group was age, height and body mass matched. A data acquisition setup consisting of three independent modules including force platforms, position analysis system and electromyography was used. Subjects were jumping down from 0.1, 0.2, and 0.3 m step heights. The acquired signals were used to determine the ground reaction force, muscular activity, mass centre position, velocity and acceleration. Results: Statistically significant differences were found between the groups (t-test, p < 0.05) in the maximum vertical ground reaction force in the left limb for 0.2 and 0.3 m step heights. Differences in the muscle activity between the groups were found to be statistically significant (t-test, p < 0.05) before the jump, during the landing phase, and after the jump for selected muscle groups and step heights. Conclusion: Combing the three independent measurement systems provided new information on drop jump biomechanics. The distribution of loads in different muscles was not uniform across the groups. Patients allocated more energy to control their motion and seemed to protect their operated limb by shifting the bodyweight to the healthy limb.
Rocznik
Strony
111--120
Opis fizyczny
Bibliogr. 33 poz., rys., tab., wykr.
Twórcy
  • Wrocław University of Technology, Institute of Biomedical Engineering and Instrumentation, Wrocław, Poland
autor
  • College of Physiotherapy in Wrocław, Wrocław, Poland
autor
  • College of Physiotherapy in Wrocław, Wrocław, Poland
  • University of Zielona Góra, Faculty of Mechanical Engineering, Biomedical Engineering Group, Zielona Góra, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-db48fe5d-eb9b-4ecd-aaf0-3c58a0535c7e
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