This paper analyzes and discusses specific application of the conservation law of angular momentum in competitive sports, such as aerial tumbling, trunk rotation and somersault.

分析讨论了角动量守恒定律在空翻、转体以及旋空翻等竞技动作中的具体应用。

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The EMG average amplitude was increased with the increase of the trunk rotation angle without significant difference (P>0.05).

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）。

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