Efeito do treinamento resistido combinado com dietas cetogênicas: uma revisão sistemática e metanálise.

Abstract

Diets that cause ketosis (DCK), high in fat and restricted in carbohydrates, have been proposed as an alternative for the treatment of obesity. Among several criticisms that are raised by opponents of its use for weight loss, the loss of free fat mass (FFM) that these diets can cause, has been reported as an undesirable effect because it can reduce basal metabolic rate and cause other consequences related to health of patients. Since resistance training (RT) can promote muscle hypertrophy, its practice accompanied by DCK could help to maintain FFM. In the present study, the literature was systematically reviewed and the effect of RT in diets with or without carbohydrate restriction was compared. Although a small reduction in lean mass was identified in the meta-analysis (-0.347 CI 95%: -0.549, 0.144), some authors report that there was no loss of physical performance. Others suggest that this difference in lean mass is associated with loss of water in patients, typical phenomenon caused by carbohydrate-restricted diets. It was concluded that resistance trainingis an important tool in maintaining lean mass in relation to restrictive carbohydrate diets that cause ketosis. Specific comparing studies related to DCK, associated or not with RT, are still rare in the literature.