What role does COMT play in Sport?

COMT (catechol-O-methyltransferase) degrades catecholamines like dopamine, adrenaline, and noradrenaline. The rs4680 (Val158Met) variant alters enzyme activity: Val/Val (high activity) clears dopamine faster, which is linked to higher pain tolerance and better endurance performance. Met/Met (low activity) leaves more synaptic dopamine, potentially improving focus and cognitive flexibility, but may increase stress sensitivity and muscle soreness. However, these effects are modest and heavily influenced by training, nutrition, and psychological state. A single DNA test cannot predict athletic performance. Knowing your COMT status might help tailor recovery and training intensity – e.g., Met/Met individuals may need more rest. Evidence comes from observational and GWAS studies, not RCTs, so clinical utility is limited. No direct context was provided in the knowledge base; this answer is based on general scientific consensus.