December 2012 Publication year: 2012 Source:Gender Medicine, Volume 9, Issue 6
Both high body fat and low muscle mass have been associated with physical disability in older adults. However, men and women differ markedly in body composition. Men generally have more absolute and relative lean muscle mass and less fat mass than women.
Body mass index (BMI), age, and muscle quality (MQ) emerged as predictors of functional strength and mobility in men and women somewhat differently. After accounting for age and sample, study results showed that leg MQ was related to chair rise time and gait speed in men but not women. BMI was related to gait speed in both men and women, but BMI was related to chair rise time only in women.

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