Research note: Vitamin D and muscle performance in athletes

What the research says. A meta-analysis of eight randomised trials in 284 athletes found that vitamin D supplementation had no overall effect on muscle strength or on jump power, with a benefit appearing only for lower-limb strength in subgroup analysis.

Source. Zhang L, Quan M, Cao ZB. Effect of vitamin D supplementation on upper and lower limb muscle strength and muscle power in athletes: A meta-analysis. PLoS One, 2019;14(4):e0215826. (PubMed ID 31039170). Read the paper.

Where this applies at Performance Training Center. Sports nutrition coaching ($175/hr); practitioner-grade supplements; metabolomics testing ($799). If you want this built into your own programme, get in touch or start with the free BMR and macro calculator.

Performance Training Center provides training and nutrition coaching. We do not provide physical therapy, diagnosis, or medical treatment. This note summarises published research and is not medical advice.