Abstract:
OBJECTIVES:To assess relationships between low skeletal muscle mass (SMM) and functional decline in community-dwelling elderly women. DESIGN:Secondary analysis of data from EPIDOS, a French prospective observational multicenter cohort study of osteoporosis epidemiology. SETTING:One center in France between 1992 and 1994. PARTICIPANTS:Women aged 75 years or older without disability and with available baseline SMM measurements. MEASUREMENTS:SMM was assessed using dual-energy X-ray absorptiometry and functional decline was defined as loss of at least one Instrumental Activity of Daily Living component. Associations linking low SMM to functional decline were estimated using the Cox proportional hazards model. RESULTS:Of 975 women followed for 4 years, 452 (46.4%) experienced functional decline. Factors independently associated with functional decline were decreased SMM (adjusted hazard ratio [aHR] per SD decrease, 1.12; 95% confidence interval [95% CI], 1.01-1.24), older age (aHR per SD increase, 1.28; 95% CI, 1.17-1.39), one or more comorbidities (aHR, 1.65; 95%CI, 1.05-2.59), and impaired chair-stand test (aHR, 1.35; 95% CI, 1.01-1.82). The second SMM quartile was associated with functional decline (aHR, 1.39; 95% CI, 1.06-1.84) and the lowest quartile showed a nearly significant association (aHR, 1.29; 95% CI, 0.98-1.72). Factors negatively associated with functional decline were living alone (aHR, 0.76; 95% CI, 0.59-0.96), higher handgrip strength (aHR per SD increase, 0.88; 95% CI, 0.78-0.88), and walking speed (aHR per SD increase, 0.86; 95% CI, 0.77-0.96). CONCLUSION:Low SMM was independently associated with functional decline within 4 years after adjustment for age, muscle strength, physical performance, and comorbidities in community-dwelling elderly women.
journal_name
J Am Med Dir Assocjournal_title
Journal of the American Medical Directors Associationauthors
Amigues I,Schott AM,Amine M,Gelas-Dore B,Veerabudun K,Paillaud E,Beauchet O,Rolland Y,Canouï Poitrine F,Bonnefoy Mdoi
10.1016/j.jamda.2012.12.002subject
Has Abstractpub_date
2013-05-01 00:00:00pages
352-7issue
5eissn
1525-8610issn
1538-9375pii
S1525-8610(12)00448-3journal_volume
14pub_type
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