The Claim

Resistance training alone significantly increases muscle strength and lean body mass in vitamin D-deficient young men, regardless of whether they receive vitamin D supplementation.

Source: Vitamin D supplementation does not enhance resistance training-induced gains in muscle strength and lean body mass in vitamin D deficient young men

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
47score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

If you're a young man with low vitamin D and you lift weights, your muscles will get stronger and you'll gain more muscle mass—even if you don't take vitamin D pills.

See the scientific wording

Resistance training alone significantly increases muscle strength and lean body mass in vitamin D-deficient young men, regardless of vitamin D supplementation status.

What the research says

1 study

  1. Study: Vitamin D supplementation does not enhance resistance training-induced gains in muscle strength and lean body mass in vitamin D deficient young men

    Even without taking vitamin D pills, the men got stronger and gained muscle just from lifting weights—so vitamin D isn’t needed for those gains.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.