title: Effects of Aerobic Plus Resistance Exercise on Body Composition Related Variables in Pediatric Obesity: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
abstract: The purpose of this meta-analysis of randomized trials was to determine the effectiveness of aerobic plus resistance exercise interventions on body composition related to variables in overweight and obese youth. A computerized search was made of 7 databases. The analysis was restricted to randomized controlled trials that examined the effect of aerobic and resistance exercise on body composition (body weight, body mass index, fat mass, fat-free mass, and waist circumference) in obese youth. Two independent reviewers screened studies and extracted data. Weighted mean differences (WMD) and 95% confidence intervals were calculated. Nine studies were selected for meta-analysis as they fulfilled the inclusion criteria (n = 365). Aerobic plus resistance exercise interventions (8-24 weeks duration) produced a decrease in body weight (WMD=-3.31 kg), body mass index (WMD=-1.05 kg/m2), and fat mass (WMD=-1.93% and 5.05 kg), but changes in fat-free mass and waist circumference were not observed. These changes were accentuated through programs of at least 60 min of exercise per session, generating greater reductions in body weight (WMD=-4.11 kg), fat mass (WMD=-4.07%), and increase in fat-free mass (WMD = 2.45 kg). This meta-analysis provides insight into the effectiveness of short-term aerobic plus resistance exercise interventions for decreasing body weight, body mass index, and fat mass in pediatric obesity.
authors.affiliation: Physical Activity, Sport and Health Sciences Laboratory, University of Santiago, Santiago, Chile.
authors.forename: Antonio
authors.initials: A
authors.lastname: García-Hermoso
authors.forename: Mairena
authors.initials: M
authors.lastname: Sánchez-López
authors.forename: Vicente
authors.initials: V
authors.lastname: Martínez-Vizcaíno
mesh_terms: D050154:Adiposity; D001823:Body Composition; D015992:Body Mass Index; D015444:Exercise; D006801:Humans; D063766:Pediatric Obesity / Q000628:therapy*; D064797:Physical Conditioning, Human / Q000379:methods*; D016032:Randomized Controlled Trials as Topic; D055070:Resistance Training; D055105:Waist Circumference; D015431:Weight Loss