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 .
Effect of physical and mental activity on blood pressure
Objectives : The authors measured and recorded the physical ( outdoor playing ) and mental ( home study ) activity behavior and blood pressure amongst school going children and observed their association with the blood pressure levels . Method : It was a cross sectional school-based study from 12 primary schools ; selected by stratified r and om sampling . Participants included 2250 children aged 10 years and above . Explanatory variables were age , sex , outdoor playing ( hours/ day ) and home- study ( hours/ day ) . Outcome variables were mean and st and ard deviation ( SD ) of systolic and diastolic blood pressures in various activity groups . Statistical tools used were proportions , correlation co-efficient ( r ) , coefficient of determination ( r2 ) and Regression analysis . Results : 47.8 % boys and 2.5 % girls were engaged in outdoor playing for more than two hours . No trend was observed for systolic blood pressure ( SBP ) in both the sexes in various activity groups of outdoor playing . Both mean diagnostic blood pressure ( DBP ) and mean BMI showed decreasing trend in boys . Mean BMI had an inverse relationship with outdoor playing in girls . Correlation of age and weight with both SBP and DBP was highly significant in both the sexes and in all the age groups except that of the 15-year age . Both SBP and DBP were not associated with home study in all sex and age groups except the age group of 10 and 12 years . Both SBP and DBP were significantly associated with the outdoor playing taking the whole sample as one group , but not in different sex or age groups ; except that the SBP was significantly cor-related with outdoor playing in 10 to 13 years age groups in boys . Conclusion : Boys spent twice the time in outdoor playing than girls . They were spending more time on outdoor playing than on home study . Conversely girls spent more time in home study . A weak negative correlation was observed between outdoor playing  and blood pressures . Less time spent in physical activities by the girls may have contributed to their higher BMI . They need behavior change communication for involvement in physical
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 .