Journal
AGE AND AGEING
Volume 33, Issue 3, Pages 266-272Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ageing/afh073
Keywords
serum albumin; serum cholesterol; functional status; performance test; frailty; elderly; longitudinal
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Background: both serum albumin and total cholesterol are potential markers of frailty. A decline in functional status is one of the key components of frailty. Objective: the aim of this study was to investigate the association of serum albumin and total cholesterol, separately and combined, with future decline in functional performance. Design: the Longitudinal Aging Study Amsterdam, an ongoing population-based longitudinal study, started in 1992/1993 with a follow-up every 3 years. Participants: 1,064 men and women aged 55-85 years with complete data on serum albumin and total cholesterol at baseline, and functional performance at baseline and 3-year follow-up. Measurements: at baseline, serum albumin and total cholesterol were measured. At baseline and 3 years later, decline in functional status was measured with three performance tests (chair stand, 3-metre walk, putting on and taking off a cardigan). Associations were adjusted for age, life-style and health-related factors. Results: albumin concentration was not associated with decline in functional performance in men and women. Women with lower serum total cholesterol concentration (less than or equal to5.2 mmol/l) were more likely to decline in functional status compared to women with higher serum total cholesterol concentration (reference; OR = 2.50; 95% CI 1.07-5.84). Men with lower serum albumin (less than or equal to43 g/l) and lower serum total cholesterol concentration were three times more likely to decline in functional performance compared to men with higher levels (OR = 3.00; 95% CI 1.00-8.97). In women, a similar trend was found (OR = 1.73; 95% CI 0.34-8.94), although not statistically significant. Conclusions: a combination of low albumin and low cholesterol levels may increase the risk of future functional decline.
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