目录中外摘要关键词·····················································1引言········································································································21研究对象··················································································································································································································································································22结果与分析··························································································································································································································································43结论与建议····················································································································53. 1. 1调查的三个层次运动员损伤率较高··························53. 1. 2调查的各个层次运动损伤中主要以四肢为主················································53. 1. 4在体育课教学·········································································································································································································
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