Gut check: can probiotics boost marathon performance?
NCT ID NCT07411482
First seen Feb 16, 2026 · Last updated May 22, 2026 · Updated 20 times
Summary
This study looks at whether taking probiotics (good bacteria) for 4 weeks, along with a personalized diet, can improve gut health and running performance in marathon runners. 27 experienced male runners will be randomly assigned to receive either probiotics or a placebo. Researchers will measure their oxygen use during treadmill tests, analyze their gut bacteria, and check for inflammation and gut barrier markers in blood and stool samples.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Locations
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Medical University of Gdańsk
Gdansk, Poland
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