Results Physical activity was associated with numerous health benefits .
The dose-response relations observed in observational studies indicate that the more physical activity , the greater the health benefit .
Results from experimental studies indicate that even modest amounts of physical activity can have health benefits in high-risk youngsters ( e.g. , obese ) .
Vigorous intensity activities may provide even greater benefit .
Aerobic-based activities had the greatest health benefit , other than for bone health , in which case high-impact weight bearing activities were required .
Some of the health benefits can be achieved through an average of 30 minutes per day . [
Level 2 , Grade A ] .
Background The purpose was to : 1 ) perform a systematic review of studies examining the relation between physical activity , fitness , and health in school-aged children and youth , and 2 ) make recommendations based on the findings .
Effects of resistance training on insulin sensitivity in overweight Latino adolescent males.
PURPOSE Insulin resistance is thought to be a core defect in the pathophysiology of obesity-related comorbidities in children , such as type 2 diabetes . Exercise training is known to improve insulin resistance and reduce the risk of type 2 diabetes in adults . However , very little is known regarding the effects of exercise on insulin resistance in youth . Therefore , we examined the effects of a 16-wk resistance training exercise intervention on insulin sensitivity in youth at high risk for developing type 2 diabetes . METHODS Twenty-two overweight Latino adolescent males were r and omly assigned to either a twice-per-week resistance training group ( RT=11 ) or a nonexercising control group ( C=11 ) for 16 wk . Strength was assessed by one-repetition maximum , body composition was quantified by dual-energy x-ray absorptiometry , and insulin sensitivity was determined by the frequently sample d intravenous glucose tolerance test with minimal modeling . RESULTS Significant increases in upper- and lower-body strength were observed in the RT compared with the C group . The RT group significantly increased insulin sensitivity compared with the C group ( P<0.05 ) , and this increase remained significant after adjustment for changes in total fat mass and total lean tissue mass ( P<0.05 ) . Compared with baseline values , insulin sensitivity increased 45.1+/-7.3 % in the RT group versus -0.9+/-12.9 % in controls ( P<0.01 ) . CONCLUSION A twice-per-week 16-wk resistance training program can significantly increase insulin sensitivity in overweight Latino adolescent males independent of changes in body composition
Results Physical activity was associated with numerous health benefits .
The dose-response relations observed in observational studies indicate that the more physical activity , the greater the health benefit .
Results from experimental studies indicate that even modest amounts of physical activity can have health benefits in high-risk youngsters ( e.g. , obese ) .
Vigorous intensity activities may provide even greater benefit .
Aerobic-based activities had the greatest health benefit , other than for bone health , in which case high-impact weight bearing activities were required .
Some of the health benefits can be achieved through an average of 30 minutes per day . [
Level 2 , Grade A ] .
Background The purpose was to : 1 ) perform a systematic review of studies examining the relation between physical activity , fitness , and health in school-aged children and youth , and 2 ) make recommendations based on the findings .