Exercise, physical activity and healthcare utilization: A review of literature for older adults.

The impacts of exercise and physical activity on healthcare utilization of older adults have been studied using either (1) clinical trials or retrospective cohort studies focusing on older people who participated in various exercise intervention programs, or (2) survey data. This review focuses on both streams of studies, which cover the topic for adults aged 65 and older. The paper reviews the literature on physical activity and its implications for healthcare system, and discusses potential directions for future research by highlighting the limitations of the existing studies. Although there are significant variations in samples and methods used, both streams of reviewed literature provide evidence that physical activity leads to lower utilization of healthcare services. Given differences in methods and samples in these studies, estimated effect of physical activity on healthcare utilization shows significant variation from one study to another. These results, therefore, cannot be generalized to justify population wide exercise intervention programs for older adults. Additional studies are needed to provide more robust estimates for the effects of exercise, and to examine the feasibility of population wide policies that aim to encourage participation of older adults in physical activity.