Olive leaf extract may supercharge your workout — a trial puts it to the test

NCT ID NCT07729072

First seen Jul 27, 2026 · Last updated Jul 28, 2026 · Updated 1 time

Summary

This trial investigates whether taking olive leaf extract daily for three weeks can enhance the effects of endurance training in healthy, physically active adults aged 18 to 45. Participants will take either olive leaf extract or a placebo while following a moderate or high-intensity cycling program. Researchers will measure changes in aerobic power, oxygen uptake, and muscle function to see if the supplement improves performance beyond training alone.

What this could mean

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

Active substance
olive leaf extract capsules (250 mg daily)
What this could lead to
If it works, this could point toward a natural supplement that enhances the gains from endurance exercise, improving fitness and muscle health.
What could go wrong
This is an early-stage, small trial in healthy volunteers. The supplement may show no added benefit over training alone, and results may not apply to other populations.

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Conditions

The condition(s) this trial relates to.

Motor Activity

As listed by the trial registrant

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

Contacts and locations

Locations

  • Bâtiment Synathlon, quartier UNIL-Centre

    Lausanne, 1015, Switzerland

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