HMB and exercise: a closer look at muscle building
NCT ID NCT05444959
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how a supplement called HMB, combined with exercise, affects muscle proteins and fitness in two groups: trained athletes and people who are not very active or are malnourished. Over 21 days, participants took HMB or a placebo and underwent exercise tests. The goal was to measure changes in muscle-building signals and hormone levels, not to treat a disease.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
beta-hydroxy-beta-methylbutyric acid (HMB) free acid supplement
What this could lead to
If successful, this could help explain how HMB and exercise together influence muscle building and fitness, potentially guiding future sports nutrition or recovery strategies.
What could go wrong
This is a small, early-stage study focused on biological markers, not clinical outcomes. Results may not translate to real-world benefits or apply to broader populations.
Disclaimer
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This is a summary of
the original study
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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.
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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The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Department of Physiology and Biochemisty at the Faculty of Physical Education and Sport (Charles University, Prague, Czech Republic)
Prague, Prague 6, 162 52, Czechia
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Department of Sports Dietetics, Poznan University of Physical Education
Poznan, Wielkopolska, 61-871, Poland