The Claim
Three weeks of daily L-glutamine supplementation at 0.3 g/kg body weight in combat-sport athletes is associated with improved subjective mood scores and has no significant effect on muscle soreness, sleep quality, or perceived stress.
What the research says
Challenges is higher
Challenge is ahead, but a single strong supporting 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.
In combat-sport athletes taking 0.3 grams of L-glutamine per kilogram of body weight daily for three weeks, subjective mood scores improve, while muscle soreness, sleep quality, and perceived stress remain unchanged.
See the scientific wording
Three weeks of daily L-glutamine supplementation at 0.3 g/kg body weight in combat-sport athletes is associated with improved subjective mood scores, though it does not significantly affect muscle soreness, sleep quality, or perceived stress.
L-glutamine reduces gut leakage during intense training, which lowers systemic inflammation. This prevents the stress hormone cortisol from rising too high and helps maintain testosterone levels. The balanced ratio of these hormones supports brain function and emotional state, leading to better mood.
What the research says
1 studyThe study found that athletes who took a placebo felt better emotionally than those who took L-glutamine, which is the opposite of what the claim says. So, the study actually contradicts the idea that L-glutamine improves mood.
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.