Seaweed supplement fails to give cyclists an edge
NCT ID NCT07611877
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This small study tested whether a brown seaweed extract called Ecklonia cava could improve cycling performance in 12 trained cyclists. Participants took either the supplement or a placebo before exercise. The results showed no improvement in power output, sprint performance, or other measures like blood lactate and heart rate. The supplement did not help performance.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Ecklonia cava (brown seaweed extract)
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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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Department of Applied and Human Sciences
Kingston upon Thames, KT1 2EE, United Kingdom
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