Аннотация:Students attend sedentary life style and less like vigorous physical activity. This study investigated the effects of School-based intervention on increasing physical activity for decreasing obesity among high-school obese and overweight boys, based on the components of PRECEDE PROCEED Model, to participate in median - vigorous physical activity among the first Period of high school boys in the city of Urmia, Iran.This study was an experimental intervention that conducted at 4 high schools that were divided into 2 groups of intervention (40) and the control (40) male students, schools in junior high schools in Urmia.Three and six months after the intervention, significant differences were found between the experimental and control groups of schools, in the amount of students' participation in vigorous physical activity (p<0.01).According to the results, the school-based intervention and components of PRECEDE PROCEED Model had a positive impact on the improvement of physical activity and decrease in physical inactivity among the students.
