可减少死亡和延长生存预期的最低体力运动量:前瞻性队列研究
Background:The health benefits of leisure-time physical activity are well known, but whether less exercise than the recommended 150min a week can have life expectancy benefits is unclear. We assessed the health benefits of a range of volumes of physical activity in a Taiwanese population. Methods:In this prospective cohort study, 416 175 individuals (199 265 men and 216 910 women) participated in a standard medical screening programme in Taiwan between 1996 and 2008, with an average follow-up of 8·05years (SD 4·21). On the basis of the amount of weekly exercise indicated in a self-administered questionnaire, participants were placed into one of five categories of exercise volumes: inactive, or low, medium, high, or very high activity. We calculated hazard ratios (HR) for mortality risks for every group compared with the inactive group, and calculated life expectancy for every group. Findings:Compared with individuals in the inactive group, those in the low-volume activity group, who exercised for an average of 92min per week (95% CI 71–112) or 15min a day (SD 1·8), had a 14% reduced risk of all-cause mortality (0·86, 0·81–0·91), and had a 3year longer life expectancy. Every additional 15min of daily exercise beyond the minimum amount of 15min a day further reduced all-cause mortality by 4% (95% CI 2·5–7·0) and all-cancer mortality by 1% (0·3–4·5). These benefits were applicable to all age groups and both sexes, and to those with cardiovascular disease risks. Individuals who were inactive had a 17% (HR 1·17, 95% CI 1·10–1·24) increased risk of mortality compared with individuals in the low-volume group. Interpretation:15min a day or 90min a week of moderate-intensity exercise might be of benefit, even for individuals at risk of cardiovascular disease
来源: 国际医学期刊
- 您可能感兴趣的文章
-