The Claim
In trained cyclists, supplementation with quercetin, citrulline, or their combination has no significant effect on superoxide dismutase (SOD) activity or overall antioxidant capacity compared to placebo.
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.
In trained cyclists, taking quercetin, citrulline, or both together does not change the activity of superoxide dismutase or the body's overall antioxidant capacity compared to taking a placebo.
See the scientific wording
In trained cyclists, supplementation with quercetin, citrulline, or their combination does not significantly alter superoxide dismutase (SOD) activity or overall antioxidant capacity compared to placebo, suggesting these supplements do not enhance enzymatic antioxidant defenses in this population.
Quercetin and citrulline enter the body and trigger pathways that should boost antioxidant defenses, but in trained cyclists, these pathways do not lead to higher levels of superoxide dismutase or stronger overall antioxidant power. The body's existing antioxidant systems remain unchanged because the supplements do not activate the enzymes or molecules needed to increase their activity.
What the research says
1 studyThe study gave cyclists quercetin, citrulline, or both for a month and found that their antioxidant enzymes and overall antioxidant levels didn’t change compared to those who took sugar pills. So, the supplements didn’t help boost their body’s natural antioxidant defenses.
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.