Statins and Physical Activity in Older Men: The Osteoporotic Fractures in Men Study Public Deposited

http://ir.library.oregonstate.edu/concern/articles/wp988q25w

This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the American Medical Association and can be found at:  http://archinte.jamanetwork.com/journal.aspx

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  • IMPORTANCE: Muscle pain, fatigue, and weakness are common adverse effects of statin medications and may decrease physical activity in older men. OBJECTIVE: Determine whether statin use is associated with physical activity, longitudinally and cross-sectionally. DESIGN, SETTING, AND PARTICIPANTS: Men participating in the Osteoporotic Fractures in Men Study, a multicenter prospective cohort study of community-living men age 65+, enrolled between March 2000-April 2002. EXPOSURE: Statin use as determined by an inventory of medications (taken within last 30 days). In cross-sectional analyses, statin use categories were: users and nonusers. In longitudinal analyses, categories were: prevalent users (baseline use and throughout study), new users (initiated use during the study) and nonusers (never used). MAIN OUTCOMES AND MEASURE: Self-reported physical activity at baseline and 2 follow-up visits using the Physical Activity Scale for the Elderly (PASE). At the third visit, an accelerometer measured metabolic equivalents (METs; kcal/kg/hr) and minutes of moderate activity (METs ≥3.0), vigorous activity (METs ≥6.0), and sedentary behavior (METs ≤1.5). RESULTS: At baseline, 989 men (24%) were users and 3,148 (76%) were nonusers. The adjusted difference in baseline PASE between users and nonusers was -5.8 points (95% CI, -10.9 to -0.7). A total of 3,039 men met the inclusion criteria for longitudinal analysis: 727 (24%) prevalent users, 845 (28%) new users, 1,467 (48%) nonusers. PASE declined by an average of 2.5 points/year (2.0-3.0) for nonusers and 2.8 points/year (2.1, 3.5) for prevalent users, a nonstatistical difference (0.3 point, -0.5-1). For new users, annual PASE score declined at a faster rate than nonusers (0.9 point difference; 0.1-1.7). 3,071 men had adequate accelerometry data, 1,542 (50%) were statin users. Statin users expended less METS (0.03 kcal/kg/hr less; 0.02-0.04); engaged in less moderate physical activity (5.4 fewer minutes/day; 1.9-8.8), less vigorous activity (0.6 fewer minutes/day; 0.1-1.1), and more sedentary behavior (7.6 greater minutes/day; 2.6-12.4). CONCLUSION AND RELEVANCE: Statin use was associated with modestly lower physical activity among community-living men, even after accounting for medical history and other potentially confounding factors. The clinical significance of these findings deserves further investigation.
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  • Lee, D. S. H., Markwardt, S., Goeres, L., Lee, C. G., Eckstrom, E., Williams, C., . . . Nielson, C. M. (2014). Statins and physical activity in older men: The osteoporotic fractures in men study. JAMA Internal Medicine, 174(8), 1263-1270. doi:10.1001/jamainternmed.2014.2266
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