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 .
Two-year controlled effectiveness trial of a school-based intervention to prevent obesity in Chilean children.
OBJECTIVE Obesity prevalence among Chilean children is 19.4 % . The present study aim ed to assess the effectiveness of a school-based obesity prevention programme . DESIGN Non-r and omized controlled study . The intervention included activities in nutrition and physical activity , fully applied the first year and partially in the second one . Primary outcomes were BMI Z-score ( BMI Z ) and obesity prevalence ; secondary outcomes were waist circumference and triceps skinfold thickness . Time effects were assessed by changes in BMI -related variables by gender and period ( ANOVA and Tukey test ) , while intervention effects were determined by comparing changes in ( i ) obesity prevalence by gender and period ( PROC GENMOD ) and ( ii ) BMI Z according gender , age and period ( PROC MIXED ) . SETTING Primary schools in the Chilean cities of Casablanca ( intervention group ) and Quillota ( control group ) . SUBJECTS One thous and seven hundred and fifty-nine children from three schools ( intervention group ) and 671 from one school ( control group ) . RESULTS Over the two years , obesity prevalence and BMI Z declined significantly in the intervention group ; from 17.0 % to 12.3 % and 14.1 % to 10.3 % in boys and girls , respectively , and from 0.62 to 0.53 and 0.64 to 0.58 , respectively . In the control group , obesity remained stable at about 21 % and 15 % , while BMI Z increased significantly in the second year . BMI Z declined in both genders and all age categories in the intervention group during the first year ( significant only in younger boys ) . No changes occurred during the summer , while during the second year , BMI Z increased in boys and girls from both groups ( significant only in the younger control boys ) . Obesity declined significantly only in boys during the first year . CONCLUSION Effectiveness was greater in the first school year and more evident in younger boys
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 .