Nooshin Rouhani-Tonekaboni - Department of Health Education and Promotion, School of Health, Guilan University of Medical Sciensces, Rasht, Iran
Seyed Jalil Seyedi-Andi - Social Determinants of Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran
Mehdi Haghi - Social Determinants of Health Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran

Background: Adolescents are the most frequent fast food consumers. This unhealthy behavior lead tooverweight that is associated with diabetes mellitus, hypertension, and heart diseases. The present studyaimed to determine factors associated with behavior of fast food consumption (FFC) of female highschool students based on the Theory of Planned Behavior (TPB) in the city of Tonekanon, north of Iran.Methods: The present cross-sectional study was conducted on 197 female students studying at highschool. The constructs of the theory of planned behavior including attitude, subjective norms, perceivedbehavioral control, as well as intention and behavior of fast food consumption were assessed using apre-tested psychometric questionnaire. Spearman correlation coefficient and linear regression methodwere used to test the study hypotheses.Results: The constructs of attitude, subjective norms, and perceived behavioral control wereaccounted for 37.8% in variation of fast food consumption intention. The construct of subjectivenorms and perceived behavior control was significantly associated with intention of FFC.Intention of FFC was significantly associated with behavior (B coefficient = 0.76,P-value = 0.001) and predicted 63.8 % of the variance of fast food consumption behavior.Conclusion: The present study showed that the TPB is a powerful theory in predicting FFCbehavior. Subjective norms followed by perceived behavioral control were the strongestpredictors of FFC intention.

Fast Food, Students, Theory of Planned Behavior