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.
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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
-
Sinop University Facility
Sinop, Centarl, 57100, Turkey (Türkiye)
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