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 .
Effects of integrating pedometers, parental materials, and E-mail support within an extracurricular school sport intervention.
PURPOSE The objective of this study was to evaluate the impact of a school-based intervention ( Program X ) incorporating pedometers and e-mail support on physical activity , sedentary behavior , and healthy eating  in adolescents . METHODS A r and omized control trial was used to evaluate the impact of the Program X intervention .  Six schools ( N = 124 participants ; mean age 14.1 + /- .8 years ) were r and omized to intervention or control conditions for the 6-month study period . Objective ly recorded physical activity ( mean steps/day ) , self-reported sedentary behavior , and dietary habits were measured at baseline and at 6-month follow-up and intervention effects were assessed using repeated- measures analysis of variance and chi(2 ) tests . RESULTS Participants in the intervention group increased their step counts by 956 + /- 4107 steps/day ( boys ) and 999 + /- 1999 ( girls ) . Repeated- measures analysis of variance revealed significant group-by-time interactions for boys ( F = 7.4 , p = .01 , d = .80 ) and girls ( F = 29.6 , p < .001 , d = 1.27 ) for mean steps/day . The intervention significantly decreased the number of energy-dense/low-nutrient snacks consumed by boys ( chi(2 ) = 4.0 , p = .043 ) and increased the number of fruit serves among girls ( chi(2 ) = 4.8 , p = .028 ) . The intervention did not have a statistically significant effect on sedentary behavior . CONCLUSION A school-based intervention incorporating physical activity monitoring using pedometers and e-mail support was successful in promoting physical activity and selected healthy eating behaviors in adolescent boys and girls
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 .