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 the CATCH physical education intervention: teacher type and lesson location.
BACKGROUND Substantial differences exist in how and where physical education ( PE ) is conducted in elementary schools throughout the United States . Few effectiveness studies of large-scale interventions to improve PE have been reported . DESIGN Multicenter r and omized trial . SETTING / PARTICIPANTS The Child and Adolescent Trial for Cardiovascular Health ( CATCH ) was implemented in PE classes in 96 schools ( 56 intervention , 40 control ) in four study centers : California , Louisiana , Minnesota , and Texas . INTERVENTION The 2.5-year PE intervention consisted of professional development sessions , curricula , and follow-up consultations . MAIN OUTCOME MEASURES Intervention effects on student physical activity and lesson context in PE were examined by  teacher type  ( PE specialists and classroom teachers ) and lesson location ( indoors and outdoors ) . RESULTS Differential effects by teacher type and lesson location were evidence d for both physical activity and lesson context . Observations of 2016 lessons showed that intervention schools provided more moderate-to-vigorous physical activity ( p=0.002 ) and vigorous physical activity ( p=0.02 ) than controls . Classroom teachers  improved physical activity relatively more than PE specialists , but PE specialists still provided longer lessons and more physical activity .  Classroom teachers  increased lesson length ( p=0.02 ) and time for physical fitness ( p=0.03 ) . CONCLUSIONS The intervention improved PE of both specialists ' and classroom teachers ' lessons . States and districts should ensure that the most qualified staff teaches PE . Interventions need to be tailored to meet local needs and conditions , including teacher type and location of lessons
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 .