Social Cognitive Theory–Based Intervention to Improve Adolescent Healthy Lifestyle Compliance

Aims: Behavioral modification interventions based on social cognitive theory are needed to improve adolescents’ compliance with a healthy lifestyle. This study aimed to develop and examine the effectiveness of a behavioral modification intervention model based on social cognitive theory for improving adolescents’ compliance with a healthy lifestyle. Materials & Methods: This study employed a mixed-methods sequential exploratory design consisting of qualitative and quantitative approaches. The quantitative phase used a one-group pretest–posttest design involving ۱۰۰ adolescents selected through purposive sampling. Data were collected using a healthy lifestyle compliance questionnaire that had been tested for validity and reliability. The intervention was implemented in four stages: introduction, preparation, action, and maintenance. Data were analyzed using a paired t-test and Cohen’s d effect-size analysis utilizing SPSS ۲۵. Findings: The mean healthy lifestyle compliance score increased significantly from ۶۱.۴۲±۸.۵۳ before the intervention to ۷۸.۶۷±۷.۱۴ after the intervention, with a mean difference of ۱۷.۲۵ points (p<۰.۰۰۱; ۹۵% CI: ۱۵.۰۹–۱۹.۴۱). The intervention demonstrated a large effect size, with a Cohen’s d value of ۱.۲۴. Multivariate analysis showed that self-efficacy (p<۰.۰۰۱), self-regulation (p=۰.۰۰۱), family support (p=۰.۰۰۳), and peer support (p=۰.۰۰۵) were significantly associated with healthy lifestyle compliance after the intervention. Conclusion: The behavioral modification intervention model based on social cognitive theory is effective in improving adolescents’ compliance with a healthy lifestyle.

کلیدواژه ها:

Adolescents ، Healthy lifestyle ، Behavior ، self-efficacy ، Social Cognitive Theory