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Effect of Vitamin D Supplementation on Muscle Strength, Gait and Balance in Older Adults: A Systematic Review and Meta‐Analysis
Abstract
Objectives: To systematically review and quantitatively synthesize the effect of vitamin D supplementation on muscle strength, gait, and balance in older adults. Design: Systematic review and meta‐analysis. Setting: MEDLINE, EMBASE, Cochrane Library, bibliographies of selected articles, and previous systematic reviews were searched between January 1980 and November 2010 for eligible articles. Participants: Older adults (≥60) participating in randomized controlled trials of the effect of supplemental vitamin D without an exercise intervention on muscle strength, gait, and balance. Measurements: Data were independently extracted, and study quality was evaluated. Meta‐analysis using a fixed‐effects model was performed and the I 2 statistic was used to assess heterogeneity. Results: Of 714 potentially relevant articles, 13 met the inclusion criteria. In the pooled analysis, vitamin D supplementation yielded a standardized mean difference of −0.20 (95% confidence interval (CI) = −0.39 to −0.01, P = .04, I 2 = 0%) for reduced postural sway, −0.19 (95% CI = −0.35 to −0.02, P = .03, I 2 = 0%) for decreased time to complete the Timed Up and Go Test, and 0.05 (95% CI = −0.11 to 0.20, P = .04, I 2 = 0%) for lower extremity strength gain. Regarding dosing frequency regimen, only one study demonstrated a beneficial effect on balance with a single large dose. All studies with daily doses of 800 IU or more demonstrated beneficial effects on balance and muscle strength. Conclusion: Supplemental vitamin D with daily doses of 800 to 1,000 IU consistently demonstrated beneficial effects on strength and balance. An effect on gait was not demonstrated, although further evaluation is recommended.
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Metadata
- Authors
- Muir, S. W., & Montero‐Odasso, M.
- Venue
- Journal of the American Geriatrics Society
- Publisher
- Wiley
- Published
- 2011-12
- Volume
- 59
- Issue
- 12
- Pages
- 2291-2300
- ISSN
- 0002-8614 (ISSN-L)
- 1532-5415
- OpenAlex
- W2051409263
- Cited by
- 470
- References
- 10
- FWCI
- 3.35
- Type
- journal article
- Language
- en
- Open access
- closed
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