Could a diabetes pill boost high-altitude exercise performance?

NCT ID NCT06164665

First seen Mar 23, 2026 · Last updated Jun 24, 2026 · Updated 12 times

Summary

This study looked at whether pioglitazone, a drug used for diabetes, can help the body use sugar from food during exercise at high altitude. Nine healthy men took either the drug or a placebo for five days, then exercised on a treadmill in a chamber simulating high altitude. Researchers measured how much sugar the body burned and how it affected inflammation and iron levels.

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Contacts and locations

Locations

  • US Army Research Institute of Environmental Medicine

    Natick, Massachusetts, 01760, United States

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

Pioglitazone (15 mg oral daily for 5 days)

What this could lead to

If successful, this could point toward ways to improve energy use and performance during high-altitude activities.

What could go wrong

This is a very small, early-phase study with only 9 healthy men. Results may not apply to women, less fit people, or real-world high-altitude conditions.

Conditions

The condition(s) this trial relates to.

altitude sickness

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.