Vitamin D deficiency is strongly associated with greater clinical severity and chronicity of tendinopathy. Vitamin D supplementation is associated with meaningful improvements in pain and functional outcomes, suggesting that vitamin D status represents a clinically relevant and potentially modifiable factor in tendinopathy management. Clinical trial registration Clinical trial number: not applicable. This study was a retrospective observational study and was, therefore, not registered as a clinical trial.
Kizilkaya et al. (Tue,) studied this question.
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