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至今仍很难确定体力活动在预防早死起了多大的作用。一些动物试验证明给年幼动物定时活动其动物的寿命要较不活动的对照组明显延长。Retzlagf给幼鼠每日活动十分钟其生存时间较同窝对照幼鼠增加25％。Goodrick报道另一组试验做园圈运动的耗子活的时间比剥夺做同类运动的对照组为长。他的实验说明运动或不运动对生长期间或生长率的间接影响也许是与寿命延长有关的一个主要因素。 Karvoneu等报道一组芬兰滑雪优胜者的生命预测寿限超过总人口相应值三年。
It is still difficult to determine how much physical activity plays in preventing premature death. Some animal experiments have shown that prolonged activities of young animals have been significantly prolonged in their time-consuming control groups. Retzlagf ten minutes daily activity of young rats to live longer than that of littermates 25%. Goodrick reported that another group of rats who exercised in park-circle exercised longer than those deprived of the same exercise. His experiments show that the indirect effects of exercise or lack of exercise on growth or on growth rates may be a major factor linked to increased longevity. Karvoneu et al. Reported that the life expectancy of a group of Finnish ski winners exceeded the total population by three years.