Finley Margaret A, Rodgers Mary M, Rasch Elizabeth K, McQuade Kevin J, Keyser Randall E
University of Maryland, School of Medicine, Department of Physical Therapy, Baltimore 21201-1082, USA.
J Rehabil Res Dev. 2002 Jan-Feb;39(1):73-81.
Wheelchair ergometer testing is used to characterize wheelchair propulsion mechanics. The reliability of kinematic and kinetic measures has not been investigated for wheelchair ergometer testing. In this study, test-retest reliability of biomechanical measurements on a wheelchair ergometer was determined during a submaximal endurance test. Ten nondisabled subjects (seven male, three female), inexperienced in wheelchair propulsion, completed three separate submaximal fatigue tests. An instrumented wheelchair ergometer was used to measure handrim kinetics while three-dimensional kinematic data were collected. Analysis of variance was used to determine if measurement differences existed across the tests. Intraclass correlation coefficients (ICC) were calculated to determine the reliability of the measurements. The majority of handrim and temporal variables were found to be reliable. Joint kinematic variables were less reliable, especially those involving wrist movements in the fatigued state. It was concluded that most biomechanical variables obtained during wheelchair ergometry were reliable.
轮椅测力计测试用于描述轮椅推进力学。尚未对轮椅测力计测试中运动学和动力学测量的可靠性进行研究。在本研究中，在次最大耐力测试期间确定了轮椅测力计生物力学测量的重测可靠性。十名无残疾受试者（七名男性，三名女性），没有轮椅推进经验，完成了三次单独的次最大疲劳测试。使用装有仪器的轮椅测力计测量手轮动力学，同时收集三维运动学数据。采用方差分析来确定各测试之间是否存在测量差异。计算组内相关系数（ICC）以确定测量的可靠性。发现大多数手轮和时间变量是可靠的。关节运动学变量的可靠性较低，尤其是在疲劳状态下涉及手腕运动的变量。得出的结论是，在轮椅测力计测试期间获得的大多数生物力学变量是可靠的。
