BODYDATA
Research
Study type: Meta-analysisConfidence: Moderate

Effects of vitamin D supplementation on muscle strength in athletes: A systematic review

Tomlinson PBJoseph CAngioi M

Year2015
Sample sizen=9
JournalJournal of Science and Medicine in Sport
AuthorsTomlinson PBJoseph CAngioi M

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Summary

Summary

A systematic review of vitamin D supplementation and muscle strength in athletes and physically active adults. Supplementation may improve strength in deficient athletes, but results were inconsistent across studies and depended on baseline deficiency status. With few included trials and high heterogeneity, additional benefit is likely limited when vitamin D is already sufficient.

Source (read the original)

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DOI: 10.1016/j.jsams.2014.07.009

Key Findings

Key findings

  • 1

    Vitamin D supplementation may improve muscle strength in deficient athletes

  • 2

    Adequate vitamin D appears associated with muscle strength and power baseline

  • 3

    Results were inconsistent across studies; baseline deficiency status influenced outcomes

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Vitamin D

Improved muscle strength and power in deficient individuals (confirmed with supplementation)

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Last checked: 2026-06-23