Brain under pressure: new study reveals how low oxygen affects exercise

NCT ID NCT01614119

Completed Knowledge-focused Sponsor: University Hospital, Grenoble Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study looked at how the brain responds when people exercise while breathing low-oxygen air (like at high altitude). Thirty healthy men did exercise tests while researchers measured brain and muscle activity using special scans and stimulation. The goal was to understand why performance drops in low oxygen, not to test a treatment.

What this could mean

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

Active substance: hypoxic gas mixture (12% oxygen)
What this could lead to: If successful, this could help scientists understand why exercise is harder at high altitude or in low oxygen.
What could go wrong: This is a small, early-stage study in healthy men, not patients. It measures brain activity, not a treatment, so it may not lead to any direct medical benefit.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

brain hypoxia - ischemia Hypoxia Hypoxia, Brain Motor Activity

As listed by the trial registrant

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

BRAIN HYPOXIA HYPOXIA

Contacts and locations

Locations

Grenoble University Hospital

Grenoble, 38042, France

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