Keto-adaptation enhances exercise performance and body composition responses to training in endurance athletes.
Low-carbohydrate diets have recently grown in popularity among endurance athletes, yet little is known about the long-term (>4 wk) performance implications of consuming a low-carbohydrate high fat ketogenic diet (LCKD) in well-trained athletes.
Method: Twenty male endurance-trained athletes (age 33 ± 11y, body mass 80 ± 11kg; BMI 24.7 ± 3.1 kg/m2) who habitually consumed a carbohydrate-based diet, self-selected into a high-carbohydrate (HC) group (n = 11, %carbohydrate:protein:fat = 65:14:20), or a LCKD group (n = 9, 6:17:77).
http://www.metabolismjournal.com/article/S0026-0495(17)30298-6/fulltext