【西德《世界报》6月1日文章】人的预计寿命是不能通过“合理的”体育锻炼计划延长的。这是柏林科学中心社会研究所的国民经济学家格特·瓦格纳博士的调查结果。他从事这种研究的背景之一是,人们尤其是年轻,收入高的人把体育活动简直看成了一种对健康的投资。目前还不清楚体育在多大程度上可提高预计寿命。但是,许多项流行病学研究都表明,耐力体育活动项目对可测量的健康状况指标有积极的影响。同样,有许多情况表明,坚持体育活动可使身体有舒适感。也有一些调查证明,坚持体育活动对预计寿命有积极影响。“但是”,瓦格纳说,“我们还是不能根据经验说明被当作手段的体育运动对改善健康状况是否有效:“其原因之一是,大多数情况下只调查成功的, [West Germany, “Le Monde” June 1 article] people’s life expectancy can not be extended through the “reasonable” physical activity plan. This is the result of a survey by Dr. Gert Wagner, a national economist at the Institute of Social Sciences in the Berlin Science Center. One background in his research is that people, especially young and highly paid people, view physical activity as a healthy investment. It is unclear to what extent sports can increase life expectancy. However, many epidemiological studies have shown that endurance physical activity programs have a positive impact on measurable health status indicators. Similarly, there are many instances where staying in physical activity can make your body feel comfortable. There are also some surveys that show that insisting on physical activity has a positive impact on life expectancy. “But,” Wagner said, “we still can not tell by experience whether the sport being used as a means of improving health is effective:” One of the reasons is that in most cases only successful surveys,