股四头肌随意收缩过程中肌电与肌肉力学参数的关系

The Relationships Between Integrated EMG Activity and Mechanics Parameters of Human Quadriceps Muscle During Voluntary Contraction

本文通过对12名被试者在伸膝过程中股四头肌的肌电和力学指标的测试,得出了股四头肌随意收缩过程中肌电与肌力矩、肌电与关节角度之间的关系,并发现了不同的关节运动速度下肌电变化的规律。初步建立了一个用肌电、关节角度和关节运动速度来推测肌力矩的回归方程。

The integrated EMG activity and mechanics parameters of m. quadriceps femoris were measured in twelvesubjects doing knee stretching. The relationships between myodynamic moment, joint angle and IEMG during m.quadriceps femoris voluntary contraction were examined and the characteristic features of IEMG were observedat various joint angular velocities. A regression equation was established for calculating myodynamic moments bymeans of IEMG, instantaneous joint angle and angular velocity.