Associations of Exercise Types with All-Cause Mortality among U.S. Adults.

PURPOSE Exercising benefits physical and mental health as well as longevity. However, the extent to which different types of exercise are differentially associated with the risk of mortality is less clear. This study examined whether 15 different types of exercise were uniquely associated with all-cause mortality in a nationally representative sample of noninstitutionalized American adults aged between 18 and 84 years. METHODS A total of 26,727 American adults in the National Health Interview Survey (NHIS) who reported their exercise type(s) in 1998 were prospectively followed for all-cause mortality through the end of 2015. We applied a series of discrete time logistic models to estimate odds ratios (OR) and 95% confidence intervals (CI) for all-cause mortality. RESULTS During 17 years of follow-up, 4,955 deaths occurred. After adjusting for total volume of other exercises and confounders (demographic factors, socioeconomic status, and health behaviors and status), walking, aerobics, stretching, weight lifting, cycling, and stair climbing were related to lower risks of mortality (ORs ranged from 0.78 to 0.93). When adjusting for engagement in all exercise types and confounders, stretching (OR = 0.90, 95%CI = 0.83-0.97) and playing volleyball (OR = 0.53, 95%CI = 0.31-0.93) were uniquely associated with lower risks of mortality. CONCLUSION These findings suggest that some types of exercise have unique benefits for longevity, but most are indistinguishable in relation to longevity. Future studies should further investigate the unique contribution of specific exercises and the joint contribution of multiple exercises and how to promote greater exercise participation.