In this research , four experiments had been designed to study the patterns and characteristics of semg signal by linear and nonlinear signal analysis methods during the short period of recovery , ischemic forearm exercise , sustained and intervallic maximal voluntary contraction of biceps brachii in twenty - eight human subjects 为探索肌肉疲劳过程中影响semg信号变化的生理因素，本研究采用线性和非线性混沌动力学两个方面的分析方法，观察在各种控制条件下的肌肉疲劳或恢复过程中semg信号的变化规律。
