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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Fat and lean body mass have important implications for health and physical functioning in older age, and physical activity is purported to be an important modifiable determinant. However, our evidence-based understanding of its role is limited. We examined the associations of physical activity, assessed both by self-report (using data on leisure time physical activity (LTPA) collected on 4 occasions over a 28-year period) and objectively (using 5-day heart rate and movement monitoring), with fat and lean mass at ages 60-64 years in 1,162 British participants from the Medical Research Council National Survey of Health and Development in 1946-2010. Higher objectively assessed physical activity energy expenditure (PAEE) at ages 60-64 years was associated with lower fat mass and android (abdominal):gynoid (hip) fat ratio (mean differences in fat mass per 1-standard deviation increase in PAEE were -0.79 kg/m1.2 in men (95% confidence interval: -1.08, -0.50) and -1.79 kg/m1.2 (95% confidence interval: -2.15, -1.42) in women). After adjustment for fat mass, higher PAEE was associated with higher appendicular lean mass. Both light and moderate-to-vigorous intensities of activity were associated with fat mass, and the latter was associated with lean mass. More frequent LTPA across adulthood was associated with lower fat mass (in women only) and higher appendicular lean mass (in both sexes, after adjustment for fat mass). These results support the promotion of LTPA across adulthood, as well as both light and moderate-to-vigorous intensities of activity among older adults. © 2014 The Author 2014. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health.
Author(s): Bann D, Kuh D, Wills AK, Adams J, Brage S, Cooper R
Publication type: Article
Publication status: Published
Journal: American Journal of Epidemiology
Year: 2014
Volume: 179
Issue: 10
Pages: 1197-1207
Print publication date: 15/05/2014
Online publication date: 09/04/2014
Acceptance date: 06/02/2014
Date deposited: 17/01/2022
ISSN (print): 0002-9262
ISSN (electronic): 1476-6256
Publisher: Oxford University Press
URL: https://doi.org/10.1093/aje/kwu033
DOI: 10.1093/aje/kwu033
PubMed id: 24722997
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