Longitudinal changes in body composition in older men and women: role of body weight change and physical activity

Estimates of body-composition change in older adults are mostly derived from cross-sectional data.We examined the natural longitudinal patterns of change in fat-free mass (FFM) and fat mass (FM) in older adults and explored the effect of physical activity, weight change, and age on these changes.The body composition measured by hydrodensitometry and the level of sports and recreational activity (SRA) of 53 men and 78 women with a mean (+/-SD)...