Dept of Biostatistics, Columbia University, New York, NY.
J Phys Act Health. 2014 Feb;11(2):278-84. doi: 10.1123/jpah.2011-0368. Epub 2013 Jan 30.
Physical activity is a determinant of health which has been shown to impact both morbidity and mortality. This study compares quality-adjusted life expectancy (QALE) according to different levels of physical activity.
This study estimated health-related quality of life from the 2001-2009 Behavioral Risk Factor Surveillance System and then applied these estimates to the life tables to calculate QALE for individuals who engaged in 4 categories of physical activity-vigorous, moderate only, leisure-time only, and inactive.
The QALE at 18 years old was 58.4, 54.0, 54.2, and 47.0 years for individuals who reported vigorous activity, moderate activity, leisure-time activity, and inactivity, respectively. The QALE for inactive white females was 9.2 years less than the QALE for white females who engaged in some physical activity, the most among the 4 sex-by-race groups; this was followed by white males (7.8 years), Black females (6.7 years), and Black males (6.0 years).
This study demonstrates the incremental improvement of individuals' life expectancy and QALE with increases in physical activity. These findings could be of assistance to clinicians in motivating patients to become more active and public health officials and policymakers evaluating intervention programs designed to promote physical activity.
身体活动是健康的决定因素，它对发病率和死亡率都有影响。本研究比较了不同身体活动水平下的质量调整生命预期（QALE）。
本研究根据 2001-2009 年行为风险因素监测系统估计了与健康相关的生活质量，然后将这些估计应用于生命表，以计算从事 4 类身体活动（剧烈、仅适度、仅休闲时间和不活动）的个体的 QALE。
18 岁时，报告剧烈活动、适度活动、休闲时间活动和不活动的个体的 QALE 分别为 58.4、54.0、54.2 和 47.0 年。不活动的白人女性的 QALE 比从事一些身体活动的白人女性的 QALE 少 9.2 年，这在 4 个性别-种族群体中是最多的；其次是白人男性（7.8 年）、黑人女性（6.7 年）和黑人男性（6.0 年）。
本研究表明，随着身体活动的增加，个体的预期寿命和 QALE 逐渐提高。这些发现可能有助于临床医生激励患者更加活跃，也有助于公共卫生官员和政策制定者评估旨在促进身体活动的干预计划。
