Effects of vitamin D supplementation on strength, physical performance, and falls in older persons: a systematic review.
Latham NK, Anderson CS, Reid IR.
J Am Geriatr Soc. 2003 Sep;51(9):1219-26. Review.
PMID: 12919233
DOI: 10.1046/j.1532-5415.2003.51405.
Conclusion: Although there is insufficient evidence that vitamin D supplementation alone improves physical performance in older people, some data suggest a benefit from vitamin D combined with calcium supplementation, but this requires confirmation in large, well-designed trials.
Vitamin D-Related Changes in Physical Performance: A Systematic Review.
Annweiler C, Schott AM, Berrut G, Fantino B, Beauchet O.
J Nutr Health Aging. 2009;13(10):893-898.
PMID: 19924350
Conclusions: The findings show that the association between vitamin D and physical performance remains controversial. Observational studies and clinical trials yielded divergent results, which highlights the complex and to date still poorly understood association between serum vitamin D concentration or vitamin D supplementation and physical performance.