Effect of Educational Intervention Based on the Theory of Planned Behavior in Promoting Healthy Lifestyle Behaviors of Students

Aims: Doing healthy behaviors and having a healthy lifestyle in students is important. This research was conducted to determine the effect of educational intervention based on the theory of planned behavior on the promotion of healthy lifestyle behaviors in first-grade high school students in Rafsanjan city. Materials & Methods: The current study was a randomized control trial conducted on 120 first-grade high-school male students in Rafsanjan city. Data were collected before and 3 months after the intervention by a questionnaire based on the theory of planned behavior. the collected data was analyzed by SPSS 16 software and analyzed by paired t-test, independent t-test, and Chi-square test. Findings: After the intervention, the mean score of knowledge, attitude, subjective norms, perceived behavioral control and behavioral intention in the intervention group were significantly higher than the control group and the difference was significant (p<0.001). Also, the rate of addressing healthy lifestyle activities among students in the intervention group significantly increased after the intervention (p<0.001). Conclusion: Educational intervention based on planned behavior theory of healthy lifestyle behaviors increased in intervention students after educational interventions.