The Claim
Vitamin D supplementation during resistance training does not alter vitamin D receptor (VDR) mRNA expression in skeletal muscle of healthy young or elderly men, suggesting that VDR regulation is not a primary mechanism of vitamin D’s effects on muscle remodeling.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Taking vitamin D pills while doing weight training doesn’t change the levels of a specific protein in your muscles that helps vitamin D work, which means vitamin D probably isn’t helping your muscles grow by using this protein.
See the scientific wording
Vitamin D supplementation during resistance training does not alter vitamin D receptor (VDR) mRNA expression in skeletal muscle of healthy young or elderly men, suggesting that VDR regulation is not a primary mechanism of vitamin D’s effects on muscle remodeling.
What the research says
1 studyThe study gave men vitamin D while they did strength training and checked if their muscle cells changed how they use the vitamin D receptor. They found no change in the receptor’s activity, meaning vitamin D probably works on muscles in other ways — just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.