Psycho-Physiological Responses to a 4-Month High-Intensity Interval Training-Centered Multidisciplinary Weight-Loss Intervention in Adolescents with Obesity

International audienceBackground: To evaluate the impact of 4 months of a high-intensity interval training (HIIT)-centered weight-management intervention on health-related quality of life (HR-QOL), health perception (HP) and physical self-perception (PSP) in adolescents with obesity.Methods: Fifty-six adolescents with obesity (28 girls; mean body mass index [BMI], 35±4.89 kg/m2; z- BMI, 2.3±0.3; 11-17 years) followed a multidisciplinary weight-management intervention composed of nutritional counseling, HIIT program, and health-related therapeutic education. Anthropometric parameters, body composition (dual X-ray absorptiometry), and maximal aerobic capacities (maximal oxygen consumption [VO2peak]) were assessed, and self-reported questionnaires were used to assess HRQOL (36-item short form survey), HP and PSP at baseline (T0) and post-intervention (T1).Results: Body weight (92.6±18.9 to 85.9±16.2 kg), BMI (35.0±4.8 to 32.1±4.5 kg/m2), z-BMI (2.3±0.3 to 2.1±0.3) and fat mass (36.0%±9.1% to 30.4%±7.8%) were significantly decreased (P