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Associations of statin use with motor performance and myalgia may be modified by 25-hydroxyvitamin D: findings from a British birth cohort

Sharma, N and Cooper, R and Kuh, D (2017) Associations of statin use with motor performance and myalgia may be modified by 25-hydroxyvitamin D: findings from a British birth cohort. Scientific Reports, 7. pp. 6578-6589.

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Abstract

The objective was to examine whether: (1) statin use was associated with muscle related outcomes at age 60–64, (2) these associations were modifed by 25-hydroxyvitamin D (25(OH)D) status and explained by infammation, body-size or lifestyle in a British birth cohort. Markers of myalgia (intrusive body pain) and myopathy (self-reported and performance-based measures) were examined in 734 men and 822 women (MRC National Survey of Health and Development). Statin use was associated with intrusive body pain, difculty climbing stairs and slower chair rise speed. Some associations were modifed by 25(OH)D e.g. the association with intrusive body pain was evident in the insufcient (13–20ng/l) and defcient(<13ng/l) 25(OH)D status groups (OR=2.6,95% CI 1.7–1.1; OR=1.8,95% CI 1.2–2.8, respectively) but not in those with status >20ng/l (OR=0.8,95% CI 0.5–1.4) (p=0.003 for interaction). Associations were maintained in fully adjusted models of intrusive body pain and difculty climbing stairs, but for chair rise speed they were fully accounted for by infammation, body-size and lifestyle. In a nationally representative British population in early old age, statin use was associated with lower limb muscle-related outcomes, and some were only apparent in those with 25(OH)D status below 20ng/l. Given 25(OH)D is modifable in clinical practice, future studies should consider the links between 25(OH)D status and muscle related outcomes.

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