Pediatric Obesity Clinical Trial
Official title:
Nutritional Responses to Chronic Exercise- Versus Energy Restriction-induced Energy Deficits in Obese Adolescents
The aim of the present study is to compare the effect of two weight loss interventions inducing the same energy deficit but one based on exercise and one using dietary restriction, on appetite control in obese adolescents. Investigator hypothesis that daily energy intake and hunger will be increased in the dietary restriction group but not in response to the exercise program.
The present study will compare the nutritional responses to two 4-month weight loss programs inducing the same energy deficit in obese adolescents, one based on exercise and the other one using dietary restriction. After a first 4-month phase stabilizing the adolescents' daily energy intake and expenditure, half of the sample with increase their physical activity to induce a 10% increase of their daily energy expenditure (maintaining the same energy intake) while the other half will stick with the same physical activity program but reduce their daily intake to match for the same 10% energy deficit. Before, at the end and 4 months after the intervention, Investigator will assess the adolescents' energy intake and appetite control by measuring: ad libitum energy intake, appetite feelings throughout the day, food preferences, food reward. But also all the potential underneath mechanisms based on gastro-peptides and adipokines. Finally, sleep metabolism will be assessed using polysomnography as a potential link between weight loss and appetite control. Body composition, quality of life, aerobic capacities and resting metabolic rate will also be measured at each time point. ;
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