开合跳，北美称之为jumping jack，共和联邦国家称之为星跳（star jump），即像星星一样有五个角，人体的头、双手、双脚分别为五个角，通过双手双脚的开合跳动，算完成一次动作[1]。
另见
- Split Jack
参考文献
外部链接
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