Could a daily vitamin d drop sharpen athletic edge?
NCT ID NCT07748650
First seen Aug 06, 2026 · Last updated Aug 07, 2026 · Updated 1 time
Summary
This trial tests whether taking vitamin D3 daily, alone or with calcium, can improve sports performance in female indoor athletes. Over 90 days, participants receive either vitamin D3, vitamin D3 plus calcium, or a placebo, and researchers measure changes in muscle strength, balance, jump height, agility, and sprint speed. The goal is to see if this simple supplement can give athletes a measurable edge.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Vitamin D3 (cholecalciferol) drops, with or without calcium tablets, compared to placebo
- What this could lead to
- If vitamin D3 improves muscle strength and balance, it could point to a simple supplement strategy for enhancing athletic performance in indoor athletes.
- What could go wrong
- This is a small, early-stage trial, so results may not apply broadly. Vitamin D may not outperform placebo, and high doses could carry risks.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Fu Jen Catholic University Hospital
New Taipei City, Taiwan