Serum 25-hydroxyvitamin D and physical performance in postmenopausal women.

ABSTRACT:

Background

Impairments in physical performance increase sharply with age. Low serum 25-hydroxyvitamin D (25-OHD) levels may be a modifiable risk factor for physical performance decline.

Methods

Five hundred thirty-two participants in the Women's Health Initiative Clinical Trial (WHI CT) were among a 25% randomly selected subsample of women who participated in performance-based measures of physical performance at baseline, year 1, year 3, and year 6. A physical performance summary score was derived from three tests: timed walk, chair-stand, and grip strength. Levels of 25-OHD were measured at baseline. We used the generalized estimating equations (GEE) method to examine repeated measures of physical performance as a function of follow-up time since baseline according to 25-OH

SUBMITTER: Michael YL 

PROVIDER: S-EPMC3216069 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature