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 .
New moves-preventing weight-related problems in adolescent girls a group-randomized study.
BACKGROUND Weight-related problems are prevalent in adolescent girls . PURPOSE To evaluate New Moves , a school-based program aim ed at preventing weight-related problems in adolescent girls . DESIGN School-based group-r and omized controlled design . SETTING / PARTICIPANTS 356 girls ( mean age=15.8±1.2 years ) from six intervention and six control high schools . More than 75 % of the girls were racial/ethnic minorities and 46 % were overweight or obese . Data were collected in 2007 - 2009 and analyzed in 2009 - 2010 . INTERVENTION An all-girls physical education class , supplemented with nutrition and self-empowerment components , individual sessions using motivational interviewing , lunch meetings , and parent outreach . MAIN OUTCOME MEASURES Percentage body fat , BMI , physical activity , sedentary activity , dietary intake , eating patterns , unhealthy weight control behaviors , and body/self-image . RESULTS New Moves did not lead to significant changes in the girls ' percentage body fat or BMI but improvements were seen for sedentary activity , eating patterns , unhealthy weight control behaviors , and body/self-image . For example , in comparison to control girls , at 9-month follow-up , intervention girls decreased their sedentary behaviors by approximately one 30-minute block a day ( p=0.050 ) ; girls increased their portion control behaviors ( p=0.014 ) ; the percentage of girls using unhealthy weight control behaviors decreased by 13.7 % ( p=0.021 ) ; and improvements were seen in body image ( p=0.045 ) and self-worth ( p=0.031 ) . Additionally , intervention girls reported more support by friends , teachers , and families for healthy eating and physical activity . CONCLUSIONS New Moves provides a model for addressing the broad spectrum of weight-related problems among adolescent girls . Further work is needed to enhance the effectiveness of interventions to improve weight status of youth
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 .