随躯干旋转角度的增加，竖脊肌肌电幅度呈升高的趋势，但差异无统计学意义（P＞0．05）。
The EMG average amplitude was increased with the increase of the trunk rotation angle without significant difference (P>0.05).
股外侧肌和股内侧肌这两块肌肉的肌电活动幅度比较大，几乎是同时开始，同时结束，表现出了高度的一致性。
Vastus lateralis and vastus medialis muscle EMG activity that two relatively large range, almost the same time the beginning and ending, showing a high degree of consistency.
股外侧肌和股内侧肌这两块肌肉的肌电活动幅度比较大，几乎是同时开始，同时结束，表现出了高度的一致性。
Vastus lateralis and vastus medialis muscle EMG activity that two relatively large range, almost the same time the beginning and ending, showing a high degree of consistency.
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