No Benefit of Ingestion of a Ketone Monoester Supplement on 10-km Running Performance

ABSTRACTPurposePreexercise ingestion of exogenous ketones alters the metabolic response to exercise, but effects on exercise performance have been equivocal.MethodsOn two occasions in a double-blind, randomized crossover design, eight endurance-trained runners performed 1 h of submaximal exercise at