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Regular vigorous physical activity and disability development in healthy overweight and normal-weight seniors: a 13-year study.

Bruce, Bonnie, Fries, James F., Hubert, Helen·2008·American Journal of Public Health

Abstract

Objectives. We examined the relationship of regular exercise and body weight to disability among healthy seniors. Methods. We assessed body mass index (BMI) and vigorous exercise yearly (1989–2002) in 805 participants aged 50 to 72 years at enrollment. We studied 4 groups: normal-weight active (BMI< 25 kg/m 2; exercise> 60 min/wk); normal-weight inactive (exercise≤ 60 min/wk); overweight active (BMI≥ 25 kg/m 2); and overweight inactive. Disability was measured with the Health Assessment Questionnaire (0–3; 0= no difficulty, 3= unable to do). We used multivariable analysis of covariance to determine group differences in disability scores after adjustment for determinants of disability. Results. The cohort was 72% men and 96% White, with a mean age of 65.2 years. After 13 years, overweight active participants had significantly less disability than did overweight inactive (0.14 vs 0.19; P= .001) and normal-weight inactive (0.22; P= .03) participants. Similar differences were found between normal-weight active (0.11) and normal-weight inactive participants (P< .001). Conclusions. Being physically active mitigated development of disability in these seniors, largely independent of BMI. Public health efforts that promote physically active lifestyles among seniors may be more successful than those that emphasize body weight in the prevention of functional decline.

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Metadata

Authors
Bruce, B., Fries, J. F., & Hubert, H.
Affiliations
At the time of the research, the authors were with the Division of Immunology & Rheumatology, Department of Medicine, Stanford University, Palo Alto, CA.
Venue
American Journal of Public Health
Published
2008-07
Volume
98
Issue
7
Pages
1294-1299
ISSN
  • 0090-0036
  • 1541-0048
Cited by
28
References
1
Language
en

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