Objective: To investigate the relationship between sEMG signal and force during fatiguing contractions in flexor carpi ulnaris muscle ( FCU) and biceps brachii muscle ( BB) respectively based on wrist and elbow flexions. 目的以腕-肘关节为例,探讨不同水平运动负荷诱发尺侧腕屈肌(FCU)和肱二头肌(BB)疲劳过程中sEMG信号与各关节最大屈肌肌力的关系。