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 .
An active school model to promote physical activity in elementary schools: Action schools! BC
Objective : To assess the impact of an active school model on  children ’s physical activity ( PA ) . Design : 16-month cluster r and omised controlled trial . Setting : 10 elementary schools in Greater Vancouver , BC . Participants : 515 children aged 9–11 years . Intervention : Action Schools ! BC ( AS ! BC ) is an active school model that provided schools with training and re sources to increase children ’s PA . Schools implemented AS ! BC with support from either external liaisons ( liaison schools , LS ; four schools ) or internal champions ( champion schools , CS ; three schools ) . Outcomes were compared with usual practice ( UP ) schools ( three schools ) . Main outcome measurements : PA was measured four times during the study using pedometers ( step count , steps/day ) . Results : Boys in the LS group took 1175 more steps per day , on average , than boys in the UP group ( 95 % CI : 97 to 2253 ) . Boys in the CS group also tended to have a higher step count than boys in the UP group ( + 804 steps/day ; 95 % CI : −341 to 1949 ) . There was no difference in girls ’ step counts across groups . Conclusions : The positive effect of the AS ! BC model on boys ’ PA is important in light of the current global trend of decreased PA
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 .