Effect of Education Based on Trans-Theoretical Model on Physical Activity of Reproductive Aged Women Referred To Health Centers in Zanjan

Background: despite the health benefits of physical activity, many people still adopt sedentary lifestyles. this study aimed to investigate the effect of education based on trans-theoretical model (ttm) on physical activity of women of reproductive age in zanjan. methods: this was a quasi-experimental study. using convenience sampling method, the sample size of 120 women was selected and randomly allocated to study groups. the data was collected using a short version of physical activity change algorithm questionnaire and ipaq (international physical activity questionnair) before and 3 months after intervention. in addition to training sessions, the intervention 2 group was trained to use pedometer. results: before the intervention most of the women were in contemplation and preparation stages and 3 months after the intervention, women in intervention groups moved to action and maintenance stages (p < 0.001). there was significant difference in mean time of weekly walking and physical activity in three groups 3 months after the intervention (p < 0.001). these changes were more prominent in women who used pedometer. conclusion: the findings showed that education based on the trans-theoretical model was effective in promoting the physical activity. using the pedometer along with education had effect on improvement of the physical activity.