Caffeine and herb combo boosts soccer Players' jumping and heading
NCT ID NCT07458594
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether taking caffeine and rhodiola rosea supplements, alone or together, could improve how well soccer players jump and head the ball when fatigued. Ninety-six healthy male players from Beijing Sport University took either a placebo, rhodiola, caffeine, or both for 30 days, then performed jumping and heading tests. The goal was to see if these supplements could help players perform better in aerial duels during the tiring parts of a match.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- caffeine and rhodiola rosea extract
- What this could lead to
- If it works, this could point toward a simple supplement strategy to help soccer players jump higher and head the ball better when tired.
- What could go wrong
- This is a small, early study in healthy male college players, so results may not apply to other athletes. Supplements may cause side effects like jitters or upset stomach.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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96 people
The number who actually took part.
- Started
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Oct 2025
- Finished
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Jan 2026
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 30 years
- Sex
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Male participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Healthy male soccer players from the Beijing Sport University team. Systematic soccer-specific training background and stable competitive level. Suitable for high-intensity physical testing based on the Physical Activity Readiness Questionnaire (PAR-Q). Exclusion Criteria: * History of neuromuscular or musculoskeletal system diseases. Intake of caffeine (coffee/tea), other supplements, ergogenic aids, or alcohol within the last 3 months. Current use of antidepressants or central nervous system stimulants. Smokers.
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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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Beijing Sport University
Beijing, China
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China Football Institute, Beijing Sport University
Beijing, Beijing Municipality, 100084, China