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 .
Report on childhood obesity in China (8): effects and sustainability of physical activity intervention on body composition of Chinese youth.
OBJECTIVES To determine whether a large-scale physical activity intervention could affect body composition in primary school students in Beijing , China . METHODS The study design was one-year cluster r and omized controlled trial of physical activity intervention ( 20 min of daily exercise in the classroom ) with an additional year of follow-up among 4 700 students aged 8 - 11 years at baseline . RESULTS After the one-year intervention , BMI increased by 0.56 kg/m(2 ) ( SD 1.15 ) in the intervention group and by 0.72 kg/m(2 ) ( SD 1.20 ) in the control group , with a mean difference of -0.15 kg/m(2 ) ( 95 % CI : -0.28 to -0.02 ) . BMI z score decreased by -0.05 ( SD 0.44 ) in the intervention group , but increased by 0.01 ( SD 0.46 ) in the control group , with a mean difference of -0.07 ( -0.13 to -0.01 ) . After another year of follow up , compared to the control group , children in the intervention group had significantly lower BMI ( -0.13 , -0.25 to -0.01 ) , BMI z score ( -0.05 , -0.10 to -0.01 ) , fat mass ( -0.27 kg , -0.53 to -0.02 ) and percent body fat ( -0.53 , -1.00 to -0.05 ) . The intervention had a more pronounced effect on weight , height , BMI , BMI z score , and body composition among obese children than among normal weight or overweight children . Compared to the control group , the intervention group had a significantly higher percentage of children who maintained or reduced their BMI z score at year 1 ( P=0.008 ) and year 2 ( P=0.04 ) . CONCLUSIONS These findings suggest that 20 min of daily moderate to vigorous physical activity during the school year is a feasible and effective way to prevent excessive gain of body weight , BMI , and body fatness in primary school students
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 .