【摘要】 目的:测定和分析应用表面肌电信号分析指标评价肌肉疲劳的有效性和敏感性,方法:选取健康无专业运动男、女大学生各10名,进行3个膝关节角度(90°、60°和30°)×3个运动负荷(40%MVC、60%MVC和80%MVC)共9次静力性等长疲劳实验,同步记录sEMG信号并进行线性和非线性信号处理。结果:sEMG信号分析指标表现出单调性变化,且采样序列线性拟合具有显著性。膝关节角度、运动负荷和性别对各指标的变化率有显著影响。结论:应用非线性分析指标评价肌肉疲劳具有很好的敏感性。更多还原

【Abstract】 The purpose of this study was to measure and analyze the efficiency and sensitivity of utilization of Surface EMG parameters during fatigue of muscle exercise.Ten young male and ten young female college students participated in the experiment.Rectus femoris muscle at three different knee angles(90°,60°and 30°) was performed and multiplied three different maximum voluntary contractions(40%MVC,60%MVC和 80% MVC) until muscle was fatigued,sEMG signals was collected and both linear and nonlinear analysis were calculated.Results indicated the monotony of sEMG signal parameters and the significance of linear-fitting of the sampling sequence in the muscle fatigue process.Knee angle,exercise load and sex had significantly affected sEMG signal.Nonlinear Analysis of sEMG signals had a value in the evaluation of muscle fatigue with better sensitivity.更多还原