Upper-limb fatigue-related joint power shifts in experienced wheelchair users and nonwheelchair users.
作者： Mary M. Rodgers , Kevin J. McQuade , Elizabeth K. Rasch , Randall E. Keyser , Margaret A. Finley
DOI: 10.1682/JRRD.2003.01.0027
关键词: Inverse dynamics 、 Engineering 、 Wheelchair 、 Workload 、 Upper limb 、 Elbow 、 Simulation 、 Kinematics 、 Shoulder joint 、 Biomechanics
摘要: This paper evaluates power transfer or shifting across upper-limb segments, resulting from fatigue-inducing wheelchair propulsion. Nineteen manual users (WCUs) and ten nonwheelchair (NUs) participated in this study. Subjects propelled an instrumented ergometer at a workload corresponding to 75% of the peak oxygen uptake attained during maximal-graded exercise tolerance test. were required propel for as long they could constant velocity 3 km/h (32 rpm). The test was terminated when subjects no longer maintain target velocity. Peak Performance video-capture system used determine kinematics. Handrim forces joint kinematics calculate moments with use inverse dynamics approach. Results showed that fatigue, shifts shoulder elbow wrist joints. Implications injury propulsion efficiency are discussed.
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