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 .
Accelerometers and Internet for physical activity promotion in youth? Feasibility and effectiveness of a minimal intervention [ISRCTN93896459].
OBJECTIVE To evaluate the feasibility and effectiveness of a 3-month minimal physical activity ( PA ) intervention  in adolescents . METHODS A r and omised controlled trial , including five secondary schools ( n=87 ) . In the 3-month intervention ( Amsterdam , The Netherl and s , 2005 ) adolescents were provided with a PAM accelerometer , coupled to a web-based tailored PA advice ( PAM COACH ) . Measurements ( i.e. , PA , determinants of PA , aerobic fitness and anthropometrics ) took place at baseline and at 3- and 8-month follow-up . RESULTS Sixty-five percent of the participants in the intervention group reported to have worn the PAM  frequently and 56 % of the PAM users uploaded their PAM scores to the PAM COACH at least once . We found significant differences between groups in favour of the intervention group in moderate intensity PA ( MPA ) for girls after 3 months ( 411 min/week ; 95 % CI : 1 ; 824 ; P=0.04 ) and in sedentary time for boys after 8 months ( -1801 min/week ; 95 % CI : -3545 ; -57 ; P=0.04 ) . CONCLUSIONS Although the process evaluation suggests that a substantial proportion of the participants did not regularly wear the PAM and did not upload information to the PAM COACH website , our findings suggest promising intervention effects on MPA among girls and sedentary time among boys
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 .