Ketogenic Diet and Sport Performance

Fiorenzo Moscatelli; Anna Valenzano; Rita Polito; Sessa Francesco; Angelo Montana; Monica Salerno; Antonietta Messina; Marcellino Monda; Giuseppe Cibelli; Vincenzo Monda; Giovanni Messina

Fiorenzo Moscatelli¹, Anna Valenzano¹, Rita Polito¹, Sessa Francesco¹, Angelo Montana², Monica Salerno², Antonietta Messina³, Marcellino Monda³, Giuseppe Cibelli¹, Vincenzo Monda^1,3, Giovanni Messina¹

¹University of Foggia, Department of Clinical and Experimental Medicine, Foggia, Italy
²University of Catania, Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Catania, Italy
³Università degli Studi della Campania Luigi Vanvitelli, Department of Experimental Medicine, Section of Human Physiology and Unit of Dietetic and Sport Medicine, Naples, Italy

Ketogenic Diet and Sport Performance

Sport Mont 2020, 18(1), 91-94 | DOI: 10.26773/smj.200216

Abstract

Many athletes are concerned about attaining or maintaining optimal body weight and composition for their sport. Athletes may want to reduce body weight to ensure optimal performance, to improve aesthetic appearance, or to compete in weight category sports. This leads to efforts to reduce body fat without losing muscle mass and often to nutritional practices that may have severe health consequences. A ketogenic diet is high in fat and low in carbohydrates (≤50 g d-1) and fairly high in protein. There are numerous randomized controlled studies showing that ketogenic diets effectively reduce body fat without causing excessive loss of lean body tissue. The crucial question is whether these diets influence sports performance and, if so, how. Many nutrition-exercise combinations have been studied in an effort to increase rates of fatty acid oxidation and attenuate the rate of carbohydrate utilization, thus potentially augmenting exercise performance. The evidence suggests that increased fat availability transfers into higher rates of both whole-body and muscle lipid utilization during standardized submaximal aerobic exercise. However, despite greater rates of fat oxidation, these diets consistently fail to improve endurance performance compared with a carbohydrate-rich diet, and little is known about the effect of a ketogenic diet on strength performance.

Keywords

ketogenic diet, physical exercise, endurance exercise, central fatigue, aerobic exercise

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