Department of Health and Behavior Studies, Teachers College, Columbia University, New York, NY 10027, USA.
Prev Med. 2012 Nov;55(5):458-63. doi: 10.1016/j.ypmed.2012.08.021. Epub 2012 Sep 7.
We investigated the relationship between physical activity and mental health and determined the optimal amount of physical activity associated with better mental health.
Self-reported data from a national random sample of 7674 adult respondents collected during the 2008 U.S. Health Information National Trends 2007 Survey (HINTS) were analyzed in 2012. Mental health was plotted against the number of hours of physical activity per week using a fractional 2-degree polynomial function. Demographic and physical health factors related to poorer mental health were examined. The optimal range of physical activity associated with poorer mental health was examined by age, gender, and physical health.
A curvilinear association was observed between physical activity and general mental health. The optimal threshold volume for mental health benefits was of 2.5 to 7.5h of weekly physical activity. The associations varied by gender, age, and physical health status. Individuals who engaged in the optimal amount of physical activity were more likely to have reported better mental health (odds ratio=1.39, p=0.006).
This study established a hyperbolic dose-response relationship between physical activity and general mental health, with an optimal range of 2.5 to 7.5h of physical activity per week.
我们研究了身体活动与心理健康之间的关系，并确定了与更好的心理健康相关的最佳身体活动量。
2012 年，对 2008 年美国健康信息国家趋势调查（HINTS）期间收集的来自全国随机抽取的 7674 名成年受访者的自我报告数据进行了分析。使用分数 2 度多项式函数，根据每周身体活动的小时数绘制心理健康图。检查了与较差心理健康相关的人口统计学和身体健康因素。按年龄、性别和身体健康状况检查了与较差心理健康相关的最佳身体活动范围。
身体活动与一般心理健康之间存在曲线关系。心理效益的最佳阈值量为每周 2.5 至 7.5 小时的身体活动。这些关联因性别、年龄和身体健康状况而异。进行最佳身体活动量的个体更有可能报告更好的心理健康（优势比=1.39，p=0.006）。
本研究确立了身体活动与一般心理健康之间的双曲线剂量反应关系，每周身体活动的最佳范围为 2.5 至 7.5 小时。
