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PLoS By Category | Recent PLoS Articles
Geriatrics - Non-Clinical Medicine - Physiology - Public Health and Epidemiology

Participation in Sports Organizations and the Prevention of Functional Disability in Older Japanese: The AGES Cohort Study
Published: Friday, November 30, 2012
Author: Satoru Kanamori et al.

by Satoru Kanamori, Yuko Kai, Katsunori Kondo, Hiroshi Hirai, Yukinobu Ichida, Kayo Suzuki, Ichiro Kawachi

Background

We sought to examine prospectively the difference in the association between incident functional disability and exercise with or without sports organization participation.

Methods

The study was based on the Aichi Gerontological Evaluation Study (AGES) Cohort Study data. In October 2003, self-reported questionnaires were mailed to 29,374 non-disabled Japanese individuals aged 65 years or older. Of these, 13,310 individuals were introduced to the Study, and they were followed for 4 years. Analysis was carried out on 11,581 subjects who provided all necessary information for the analysis.

Results

Analysis was carried out on incident functional disability by 4 groups of different combinations of performance of exercise and participation in a sports organization Active Participant (AP), Exercise Alone (EA), Passive Participant (PP) and Sedentary (S). Compared to the AP group, the EA group had a hazard ratio (HR) of 1.29 (1.02–1.64) for incident functional disability. No significant difference was seen with the PP group, with an HR of 1.16 (0.76–1.77). When a measure of social networks was added to the covariates, the HR of the EA group dropped to 1.27 (1.00–1.61), and significant differences disappeared. In contrast, it showed hardly any change when social support was added.

Conclusion

The results suggested that, even with a regular exercise habit, incident functional disability may be better prevented when a person participates in a sports organization than when he/she does not. In addition, participation in a sports organization correlates positively with social networks, which may lead to a small decrease in incident functional disability.

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