Caffeine and L-Theanine: a dynamic duo for athletes?
NCT ID NCT07268573
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how caffeine and L-theanine, taken alone or together, affect physical and cognitive performance in 20 competitive athletes. Participants completed strength, endurance, and coordination tests after taking supplements or a placebo. The goal was to see if these common ingredients could enhance performance.
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 L-theanine
What this could lead to
If it works, this could show that combining caffeine and L-theanine boosts strength, endurance, and coordination in athletes.
What could go wrong
This is a small, completed study with only 20 athletes, so results may not apply to everyone. Caffeine can cause jitters or sleep issues in some people.
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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Sinop University Facility
Sinop, Centarl, 57100, Turkey (Türkiye)