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 .
Effect of physical training on heart-period variability in obese children.
OBJECTIVE The beat-to-beat variability in electrocardiogram intervals ( RR , i.e. , heart-period variability ) provides information on cardiac autonomic activity that predicts arrhythmias and mortality rate in animals and adults . We determined the effect of physical training on heart-period variability in obese children . METHODS Thirty-five subjects were r and omly assigned to physical training and control groups . The training involved 4 months of exercise , 5 days per week , 40 minutes per day . Cardiovascular fitness was measured with submaximal heart rate during supine cycling ; percentage of body fat was measured with dual-energy absorptiometry ; and resting heart-period variability  parameters were measured in a supine position . A pretraining to posttraining change score was computed for each variable . The effect of the training was determined by comparing the changes of the training and control groups . RESULTS Compared with the control group , the trained group ( 1 ) reduced submaximal heart rate and percentage of body fat ( p < 0.01 ) ; ( 2 ) increased in the root mean square of successive differences , a time-domain parameter reflective of vagal tone ( p < 0.05 ) ; ( 3 ) decreased in low-frequency power expressed as a percentage of total power , a frequency-domain index of combined sympathetic and vagal activity ( p < 0.03 ) ; and ( 4 ) decreased in the ratio of low- to high-frequency power , an index of sympathetic-parasympathetic balance ( p < 0.01 ) . CONCLUSIONS In obese children , physical training alters cardiac autonomic function favorably by reducing the ratio of sympathetic to parasympathetic activity
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 .