The Claim
In male sub-elite badminton players, daily supplementation with 2.4 grams of L-citrulline for seven days produces a moderate improvement in anaerobic endurance at 24 hours post-supplementation but does not produce a sustained improvement in anaerobic endurance at 72 hours post-supplementation.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When male sub-elite badminton players take 2.4 grams of L-citrulline daily for seven days, their anaerobic endurance improves moderately at 24 hours after the last dose, but this improvement is not present at 72 hours after the last dose.
See the scientific wording
In male sub-elite badminton players, 2.4 grams of daily L-citrulline supplementation for seven days produces a moderate improvement in anaerobic endurance at 24 hours post-supplementation but no sustained benefit at 72 hours, suggesting transient or inconsistent effects on short-duration power output.
L-citrulline is turned into arginine in the kidneys, which the body uses to make nitric oxide. Nitric oxide opens up blood vessels, letting more oxygen and nutrients reach the muscles while flushing out waste products like ammonia and lactate. This keeps muscles working harder for longer during short bursts of intense activity, but the effect fades after a few days as the body adjusts.
What the research says
1 studyTaking citrulline for a week gave these badminton players a short burst of extra power after 24 hours, but that boost was gone by 72 hours — just like the claim said.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.