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 .
A preliminary test of a student-centered intervention on increasing physical activity in underserved adolescents
Background : Previous studies have shown that choice and self-initiated behavior change are important for increasing intrinsic motivation and physical activity ( PA )  , however , little of this research has focused on underserved adolescents . Purpose : This study examined the effects of a 4-week student-centered intervention on increasing PA  in underserved adolescents . Methods : Twenty-eight students in the intervention school were matched ( on race , percentage on free or reduced-price lunch program , gender , and age ) with 20 students from another school who served as the comparison group ( 30 girls , 18 boys ; ages 10–12 years ; 83 % African American ; 83 % on free or reduced-price lunch ) . The student-centered intervention was consistent with self-determination ( motivation ) theory and social cognitive theory in that it emphasized increasing intrinsic motivation and behavioral skills for PA . Intervention adolescents took ownership in selecting a variety of PA activities in which to participate , and they generated coping strategies for making effective PA behavior changes . Results : Intervention participants showed greater increases in accelerometer estimates of time spent in moderate PA , moderate-to-vigorous PA , and vigorous PA from baseline to Week 4 of the intervention than the comparison group . Intervention participants also showed greater increases in PA motivation and positive self-concept for PA than comparison adolescents . Conclusions : This study provides preliminary evidence that increasing adolescent involvement and choice of activities may be important in developing future PA interventions for underserved adolescents
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 .