There was some evidence that school-based physical activity interventions had a positive impact on four of the nine outcome measures .
Specifically positive effects were observed for duration of physical activity , television viewing , VO2 max , and blood cholesterol .
Generally , school-based interventions had little effect on physical activity rates , systolic and diastolic blood pressure , BMI , and pulse rate .
At a minimum , a combination of printed educational material s and changes to the school curriculum that promote physical activity result ed in positive effects .
Few changes in outcomes were observed in this up date with the exception of blood cholesterol and physical activity rates .
For example blood cholesterol was no longer positively impacted upon by school-based physical activity interventions .
The evidence suggests the ongoing implementation of school-based physical activity interventions at this time , given the positive effects on behavior and one physical health status measure .
BACKGROUND The World Health Organization ( WHO ) estimates that 1.9 million deaths worldwide are attributable to physical inactivity and at least 2.6 million deaths are a result of being overweight or obese .
In addition , WHO estimates that physical inactivity causes 10 % to 16 % of cases each of breast cancer , colon , and rectal cancers as well as type 2 diabetes , and 22 % of coronary heart disease and the burden of these and other chronic diseases has rapidly increased in recent decades .
OBJECTIVES The purpose of this systematic review was to summarize the evidence of the effectiveness of school-based interventions in promoting physical activity and fitness in children and adolescents .
Effect of physical education and activity levels on academic achievement in children.
PURPOSE This study was conducted to determine the effect of physical education class enrollment and physical activity on academic achievement in middle school children . METHODS Participants were 214 sixth- grade students r and omly assigned to physical education during either first or second semesters .  Moderate and vigorous physical activity ( MVPA ) ( number of 30-min time blocks ) outside of school was assessed using the 3-d physical activity recall ( 3DPAR ) . The 3DPAR time blocks were converted to ordinal data with scores of 1 ( no activity ) , 2 ( some activity ) , or 3 ( activity meeting Healthy People 2010 guidelines ) . Academic achievement was assessed using grade s from four core academic classes and st and ardized test scores ( Terra Nova percentiles ) . RESULTS Grade s were similar regardless of whether students were enrolled in physical education during first or second semesters . Physical education classes averaged only 19 min of MVPA . Students who either performed some or met Healthy People 2010 guidelines for vigorous activity had significantly higher grade s ( P < 0.05 ) than students who performed no vigorous activity in both semesters . Moderate physical activity did not affect grade s. St and ardized test scores were not significantly related to physical education class enrollment or physical activity levels . CONCLUSION Although academic achievement was not significantly related to physical education enrollment , higher grade s were associated with vigorous physical activity , particularly activity meeting recommended Healthy People 2010 levels
There was some evidence that school-based physical activity interventions had a positive impact on four of the nine outcome measures .
Specifically positive effects were observed for duration of physical activity , television viewing , VO2 max , and blood cholesterol .
Generally , school-based interventions had little effect on physical activity rates , systolic and diastolic blood pressure , BMI , and pulse rate .
At a minimum , a combination of printed educational material s and changes to the school curriculum that promote physical activity result ed in positive effects .
Few changes in outcomes were observed in this up date with the exception of blood cholesterol and physical activity rates .
For example blood cholesterol was no longer positively impacted upon by school-based physical activity interventions .
The evidence suggests the ongoing implementation of school-based physical activity interventions at this time , given the positive effects on behavior and one physical health status measure .
BACKGROUND The World Health Organization ( WHO ) estimates that 1.9 million deaths worldwide are attributable to physical inactivity and at least 2.6 million deaths are a result of being overweight or obese .
In addition , WHO estimates that physical inactivity causes 10 % to 16 % of cases each of breast cancer , colon , and rectal cancers as well as type 2 diabetes , and 22 % of coronary heart disease and the burden of these and other chronic diseases has rapidly increased in recent decades .
OBJECTIVES The purpose of this systematic review was to summarize the evidence of the effectiveness of school-based interventions in promoting physical activity and fitness in children and adolescents .