Effects of a multidisciplinary body weight reduction program on static and dynamic thoraco-abdominal volumes in obese adolescents

摘要: The objective of this study was to characterize static and dynamic thoraco-abdominal volumes in obese adolescents test the effects a 3-week multidisciplinary body weight reduction program (MBWRP), entailing an energy-restricted diet, psychological nutritional counseling, aerobic physical activity, respiratory muscle endurance training (RMET), on these parameters. Total chest wall (VCW), pulmonary rib cage (VRC,p), abdominal (VRC,a), (VAB) were measured 11 male (Tanner stage: 3-5; BMI standard deviation score: >2; age: 15.9 ± 1.3 years; percent fat: 38.4%) during rest, inspiratory capacity (IC) maneuver, incremental exercise cycle ergometer at baseline after 3 weeks MBWRP. At baseline, progressive increase tidal volume achieved by end-inspiratory VCW (p < 0.05) due increases VRC,p VRC,a with constant VAB. End-expiratory decreased late increasing VRC,p, dynamically hyperinflating 0.05), progressively decreasing VAB 0.05). After MBWRP, loss concentrated abdomen total IC decreased. During exercise, hyperinflation delayed associated 15% increased performance reduced dyspnea high workloads without ventilatory metabolic changes. We conclude that otherwise healthy adopt operational pattern characterized as form lung recruitment exercise. Additionally, short period MBWRP including RMET is improved performance, recruitment, unloading muscles, dyspnea.