en تخصصي Special پژوهشي Research <strong>Objective:</strong> Low physical activity is the fourth risk factor of death worldwide. Approximately 27% risk of diabetes is reduced by 150 minutes of moderate physical activity per week. The present study was designed to determine the predictors of physical activity promotion among type 2 diabetic patients<span dir="RTL">.</span><br> <strong>Materials and Methods</strong><strong>:</strong> In this cross sectional study 320 patients with type 2 diabetes were included. The data collection tool was a questionnaire, consisting of three main parts; demographic characteristics, International Physical Activity Questionnaire (IPAQ) and Theory of Planned Behavior (TPB) theoretical constructs. Statistical software package SPSS (SPSS Inc version 20) used for all statistical analyses. To determine physical activity and predictive factors a series of logistic regression and bivariate correlations and descriptive analysis were computed.<br> <strong>Results:</strong> About 57.5% of patients had moderate levels of physical activity. Significant positive correlation between subjective norms and attitudes toward behavior (<em>P</em>-value= .0001) was seen. Significant positive correlations between behavioral intention and attitude toward the behavior (<em>P</em>-value= .0001) and subjective norms (<em>P</em>-value= .0001) was observed.<br> <strong>Conclusion</strong><strong>:</strong> The results of the present study showed TPB based physical activity and demographic variable have key role in diabetic patient physical activity levels. To promote physical activity these findings can be used to design effective interventions Physical activities, Theory of planned behavior, Diabetes mellitus type 2 226 232 http://ijdo.ssu.ac.ir/browse.php?a_code=A-10-30-258&slc_lang=en&sid=1 Ali Fattahi 0000-0001-9400-2995 Yes MSc, Department of Public Health, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran. Roya Nikanjam 0000-0001-6998-1212 No MSc, Department of Public Health, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran Majid Barati Mehr 0000-0002-5152-1928 No Assistant Professor, Social Determinants of Health Research Center, Hamadan University of Medical Sciences, Hamadan, Iran. Abbas Moghim beigi 0000-0002-3803-3663 No Department of Biostatistics and Epidemiology, School of Health, Alborz University of Medical Sciences, Karaj, Iran.