目的：研究不同锻炼项目、强度和时间对大学生焦虑、抑郁及自我概念的影响。

AIM: To study the effects of different physical exercise item, intensity and time on anxiety, depression and self concept of college students.

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结果：不同年龄群体参加体育锻炼的目的与动机不存在明显差异。

RESULTS:There was no significant difference in the intention and motivation of exercises in different age stages.

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目的探讨不同有氧运动锻炼对老年人自由基代谢和抗氧化系统的影响。

Objective To explore the influence of different aerobic exercises on free radical metabolism and anti-oxidation system of the elderly people.

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