Journal
AMERICAN JOURNAL OF PREVENTIVE MEDICINE
Volume 38, Issue 4, Pages 410-418Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amepre.2009.12.033
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Funding
- Health and Labour Sciences Research Grants, Comprehensive Research on Aging and Health
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Background: Physical activity recommendations for older adults with poor health needs to be understood. Purpose: This study aims to examine the association between the frequency of physical activity and mortality among a sample of elderly subjects, most of whom were under treatment for pre-existing disease. Methods: Data on the frequency of leisure-time physical activity, walking for transportation, and non-exercise physical activity were obtained from a population-based cohort study in Shizuoka, Japan. Of the randomly selected 22,200 residents aged 65-84 years, 10,385 subjects were followed from 1999 to 2006 and analyzed. Hazard ratios (HRs) and 95% CIs were obtained for all-cause; cardiovascular disease (CVD); and cancer mortality, after adjusting for covariates such as preexisting disease(s) A subgroup analysis that was restricted to subjects under treatment for preexisting disease(s) at baseline was further conducted. Data were collected between 1999 and 2006, and all analyses were conducted in 2008 and 2009. Results: Every physical activity was associated with a reduced risk of all-cause and CVD mortality, among not only the total sample but even those under treatment. The HRs for CVD mortality among participants with 5 or more days of non-exercise physical activity per week for the total sample and those with pre-existing disease(s) were 038 (95% CI=0.22, 0 55) and 0.35 (95% CI=0.24, 052), respectively, compared with no non-exercise physical activity. The association between physical activity and cancer mortality was not clear Conclusions: This study suggests a protective effect of physical activity on all-cause and CVD mortality among Japanese elderly people with pre-existing disease (Am J Prev Med 2010;38(4) 410-418) (C) 2010 American Journal of Preventive Medicine
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