Impact of training and hypocaloric diet on fat oxidation and body composition in obese adolescents

Abstract

Objective We undertook to evaluate the effects of training and hypocaloric diet on fat oxidation and weight loss in obese adolescents within a two-month program. Methods The longitudinal intervention of a two-month program was performed in 54 adolescents, whose body mass index was 30.3 ± 4.0 kg/m 2. They were divided into three groups: hypocaloric diet program (D), individualized training program at the level of maximal lipid oxidation Lipox max (T) and hypocaloric diet combined with training program (D + T). The body composition, the substrate “crossover” point and the Lipox max point were determined before and after each protocol. Results The decreases in body weight and fat mass were more significant in the D + T group ( p < 0.01) than in the D ( p < 0.05) or T ( p = 0.07) groups. In the D + T group, the crossover point was observed at a higher intensity at the end of the program (+ 19.7% ± 2.4 of W max; p < 0.001), and the fat oxidation at Lipox max has increased by 83.2 ± 15.3 mg/min ( p < 0.01). A significant correlation between Lipox max and weight was also observed after the program in D + T subject.