The Effect of a Training Program Based on the PRECEDE-PROCEED Model on Lifestyle of Adolescents with Beta-Thalassemia: A Randomized Controlled Clinical Trial

Background: lifestyle is a key issue in the concept of health promotion. lifestyle includes all activities that encourage optimum physical, spiritual, and mental functions. the aim of this study was to determine the effect of a training program based on precede-proceed model on lifestyle of adolescents with beta thalassemia. materials and methods: in this clinical trial study, 64 adolescents (age 16-20) who referred to the thalassemia center of ahvaz (2015) were selected and randomly divided into two groups: experimental and control group. the components of the precede-proceed model were used for planning, implementation and evaluation of the program. changes in predisposing, reinforcing, enabling factors and lifestyle were immediately and a month after the intervention were assessed by a questionnaire based on precede-proceed model and the health-promoting lifestyle profile. results: the intervention had significantly positive effect on predisposing, enabling and reinforcing factors immediately and a month after the intervention (p < 0.05). repeated measures analysis of variance showed a significant positive increase in the six dimensions of lifestyle score in the experimental group from baseline to one-month follow-up (p < 0.05). conclusion: this study showed that the theory-based training program in adolescents suffered from beta thalassemia disease could improve the adolescent’s awareness and attitude of healthy lifestyle.