Effects of Ketone Bodies on Endurance Exercise

This review considers the use of ketogenic diets and exogenous ketone esters and salts for endurance performance. It states that exogenous ketones may act as an alternative fuel that spares carbohydrates, may increase postexercise glycogen replenishment and decrease proteolysis, and may act as metabolic modulators and signaling metabolites. It reports some encouraging results for endurance performance alongside contrasting evidence, and says further studies are needed before a definitive statement can be made.