中文摘要：

采用文献资料研究法对现有的期刊文献以及有关专著进行研究,结果表明,无论是在动物实验还是人体实验中,体育运动对骨密度均有影响.大多数实验都证明运动对增加骨矿含量和提高骨质密度是有益的,也有部分实验对此提出了质疑,得出了相反的结论.分析了人体在大众健身和竞技体育中骨密度的变化,并提出值得关注的几个方面的问题.

英文摘要：

By using the method Of documentation, this article explores the existing documents and periodicals involved. The result shows that physical activity influences the BMD in either animal experiment or experiment of human body. It has been proved by most experiments that physical activity is good for improving BMC and BMD. But there is some other experiments which questions the result and makes opposite conclusions. Our exploration focuses on the change of human BMD both in popular fitness and competitive sports. Finally seceral topics Which deserve further consideration are put forword.