Effect of educational intervention based on TTM model about regular physical activity amoung high school gairl students in lenjan

The inactive of life style in present society to reveal of necessity of doing activity interference for increase of physical activity for prevent of illness and to found active life style in primitive teen's days. The intention of this study was effectiveness of educational intervention based on TTM model about regular physical activity among high school girl student. In this interventional study about 300 person of high school girl student in first until third section in several stage cluster sampling method in six high school and they divided in tow group of case and noticing. Collected relating data by using of interrogations of physical activity scale، exercise benefits/barriers scale and exercise self efficacy and analyzed by using of SPSS 19 transcription. Resalts: this study showed that wasn’t before of education meaning statistical difference between studies group about stage of change، benefits and barriers and self efficacy but the educational after carreing of educational interference to benefit of positive and meaning advance in stage of change (P<0/05). The grade average of exercise benefits and barriers scale and self efficacy has meaning advanced after carreing of educational (P<0/05). The education based on TTM has the positive effect on student physical activity، so suggest using of behavior change models in health programs.