The review was registered ( Number CRD42013004632 ) on PROSPERO , the International Prospect i ve Register of Systematic Review s. Results The results indicated that PA is associated with significant and beneficial changes in fat percentage , waist circumference , systolic blood pressure , insulin , low-density lipoprotein cholesterol , and total cholesterol , as well as with small non-significant changes in diastolic blood pressure , glucose , and high-density lipoprotein cholesterol .
Conclusion Although limited , results from controlled trials suggest that PA intervention may improve physical fitness and risk factors for cardiovascular disease in adolescents who are overweight or obese
Background The increasing prevalence of obesity in the pediatric age range has become a major concern .
Studies have investigated the role of physical activity ( PA ) to prevent obesity in this population .
However , previous review s did not focus on the effects of PA in overweight/obese adolescents on physical fitness and risk factors for cardiovascular disease altogether .
Objective The present systematic review analyzed trials investigating the effect of PA on aerobic capacity , muscle strength , body composition , hemodynamic variables , biochemical markers , and endothelial function in obese/overweight adolescents .
Effects of Aerobic Versus Resistance Exercise Without Caloric Restriction on Abdominal Fat, Intrahepatic Lipid, and Insulin Sensitivity in Obese Adolescent Boys
The optimal exercise modality for reductions of abdominal obesity and risk factors for  type 2 diabetes in youth is unknown . We examined the effects of aerobic exercise ( AE ) versus resistance exercise ( RE ) without caloric restriction on abdominal adiposity , ectopic fat , and insulin sensitivity and secretion in youth . Forty-five obese adolescent boys were r and omly assigned to one of three 3-month interventions : AE , RE , or a nonexercising control . Abdominal fat was assessed by magnetic resonance imaging , and intrahepatic lipid and intramyocellular lipid were assessed by proton magnetic resonance spectroscopy . Insulin sensitivity and secretion were evaluated by a 3-h hyperinsulinemic-euglycemic clamp and a 2-h hyperglycemic clamp . Both AE and RE prevented the significant weight gain that was observed in controls . Compared with controls , significant reductions in total and visceral fat and intrahepatic lipid were observed in both exercise groups . Compared with controls , a significant improvement in insulin sensitivity ( 27 % ) was observed in the RE group . Collapsed across groups , changes in visceral fat were associated with changes in intrahepatic lipid ( r = 0.72 ) and insulin sensitivity ( r = −0.47 ) . Both AE and RE alone are effective for reducing abdominal fat and intrahepatic lipid in obese adolescent boys . RE but not AE is also associated with significant improvements in insulin sensitivity
The review was registered ( Number CRD42013004632 ) on PROSPERO , the International Prospect i ve Register of Systematic Review s. Results The results indicated that PA is associated with significant and beneficial changes in fat percentage , waist circumference , systolic blood pressure , insulin , low-density lipoprotein cholesterol , and total cholesterol , as well as with small non-significant changes in diastolic blood pressure , glucose , and high-density lipoprotein cholesterol .
Conclusion Although limited , results from controlled trials suggest that PA intervention may improve physical fitness and risk factors for cardiovascular disease in adolescents who are overweight or obese
Background The increasing prevalence of obesity in the pediatric age range has become a major concern .
Studies have investigated the role of physical activity ( PA ) to prevent obesity in this population .
However , previous review s did not focus on the effects of PA in overweight/obese adolescents on physical fitness and risk factors for cardiovascular disease altogether .
Objective The present systematic review analyzed trials investigating the effect of PA on aerobic capacity , muscle strength , body composition , hemodynamic variables , biochemical markers , and endothelial function in obese/overweight adolescents .