OBJECTIVE: The purposes of this study were to determine the relationship between muscle mass, muscle strength, muscle quality, and fat mass with a composite measure of physical function in older adults, and to determine whether these relations differed by age and sex. METHOD: Participants consisted of 1280 adults aged ≥ 55 yr from the NHANES study. Reduced rank regression was used to identify patterns of muscle mass, muscle strength, muscle quality, and fat mass related to physical function. RESULTS: A single relevant pattern emerged that included leg strength and fat mass as predictors of the 7 physical function variables. The leg strength loading was significantly greater than the fat mass loading in men and women aged 55-64 and ≥ 75, and differed between sexes. CONCLUSION: Leg strength and fat mass best predict physical function in older adults and the relative importance varies according to age and sex.
OBJECTIVE: The purposes of this study were to determine the relationship between muscle mass, muscle strength, muscle quality, and fat mass with a composite measure of physical function in older adults, and to determine whether these relations differed by age and sex. METHOD:Participants consisted of 1280 adults aged ≥ 55 yr from the NHANES study. Reduced rank regression was used to identify patterns of muscle mass, muscle strength, muscle quality, and fat mass related to physical function. RESULTS: A single relevant pattern emerged that included leg strength and fat mass as predictors of the 7 physical function variables. The leg strength loading was significantly greater than the fat mass loading in men and women aged 55-64 and ≥ 75, and differed between sexes. CONCLUSION: Leg strength and fat mass best predict physical function in older adults and the relative importance varies according to age and sex.
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Authors: James S Andrews; Laura Trupin; Gabriela Schmajuk; Jennifer Barton; Mary Margaretten; Jinoos Yazdany; Edward H Yelin; Patricia P Katz Journal: Arthritis Care Res (Hoboken) Date: 2015-01 Impact factor: 4.794
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