Payame Noor University QUARTERLY JOURNAL OF HEALTH PSYCHOLOGY 2322-1283 13 52 2025 03 20 The Effect of Play Therapy Package Based on Temporal Self-regulation Theory on Body Mass Index of Obese Children The Effect of Play Therapy Package Based on Temporal Self-regulation Theory on Body Mass Index of Obese Children 139 154 11817 10.30473/hpj.2025.68972.5883 FA Aryan Rezai Ph.D. Student, Department of Psychology, Najafabad Branch, Islamic Azad University, Najafabad, Iran. Akram Dehghani Assistant Prof, Department of Psychology, Najafabad Branch, Islamic Azad University, Najafabad, Iran. Sayed Abbas Haghayegh Assistant Prof, Department of Psychology, Najafabad Branch, Islamic Azad University, Najafabad, Iran. Journal Article 2023 08 24 Objective: Weight loss and its maintenance were one of the most important goals of therapists in the field of treating chronic obesity in children due to the inadequacies of current treatments. Thus, the researchers of this study decided to test the effect of their play therapy package based on Hall and Fong's temporal self-regulation theory in this regard. Method: By implementing a semi-experimental research design with pre-test, post-test and follow-up at 2-month intervals on a convenience sample from the population of the Iranian Health Centers-Isfahan City, including 45 parent-obese child pairs randomly assigned to two experimental and control groups, at the same time as conducting family-based behavioral intervention on both groups, members of the experimental group also received play therapy package training. Results: By analyzing the data of children's body mass index (measured by dividing the weight measured in kilograms on a scale by the square of the height measured in meters with a stadiometer) in three sections in the form of pre-test, post-test and follow-up by one-way covariance method, significant difference between the experimental group (combined play therapy method with family-based behavioral intervention method) and the control group (only family-based behavioral intervention method) in both post-test stages (F(42,1)=2188.34, P<0.001, ŋ2=0.98) and follow-up (F(42,1)=1036.61, P<0.001, ŋ2=0.96) was observed which according to the observed strong size effect indicates the effectiveness of the combined method was much better than using the family-based behavioral intervention method alone on weight loss and maintenance. Conclusion: The interpretation of the results indicates the effectiveness of adding the training package designed based on Hall and Fong's temporal self-regulation theory to strengthen the three executive functions of working memory,response inhibition, and cognitive flexibility to the usual family-based behavioral intervention as the best method available in the field of reducing and maintaining weight of children. In such a way that this combined method according to restrictions set in the field of using medical treatments (including drug therapy and surgery) for children under 12 years of age, could be considered as a step in the field of designing complementary methods, which by addressing other causes of chronic obesity including the neurological causes and the psychological structures attributed to it, including the executive functions, has been able to be effective with minimal side effects on the process of treating chronic obesity. The primary step that taking other steps in the direction of improvement and expansion of the designed play therapy package was subject to its retesting and application in other societies, and in comparison, with other methods by interested researchers. Objective: Weight loss and its maintenance were one of the most important goals of therapists in the field of treating chronic obesity in children due to the inadequacies of current treatments. Thus, the researchers of this study decided to test the effect of their play therapy package based on Hall and Fong's temporal self-regulation theory in this regard. Method: By implementing a semi-experimental research design with pre-test, post-test and follow-up at 2-month intervals on a convenience sample from the population of the Iranian Health Centers-Isfahan City, including 45 parent-obese child pairs randomly assigned to two experimental and control groups, at the same time as conducting family-based behavioral intervention on both groups, members of the experimental group also received play therapy package training. Results: By analyzing the data of children's body mass index (measured by dividing the weight measured in kilograms on a scale by the square of the height measured in meters with a stadiometer) in three sections in the form of pre-test, post-test and follow-up by one-way covariance method, significant difference between the experimental group (combined play therapy method with family-based behavioral intervention method) and the control group (only family-based behavioral intervention method) in both post-test stages (F(42,1)=2188.34, P<0.001, ŋ2=0.98) and follow-up (F(42,1)=1036.61, P<0.001, ŋ2=0.96) was observed which according to the observed strong size effect indicates the effectiveness of the combined method was much better than using the family-based behavioral intervention method alone on weight loss and maintenance. Conclusion: The interpretation of the results indicates the effectiveness of adding the training package designed based on Hall and Fong's temporal self-regulation theory to strengthen the three executive functions of working memory,response inhibition, and cognitive flexibility to the usual family-based behavioral intervention as the best method available in the field of reducing and maintaining weight of children. In such a way that this combined method according to restrictions set in the field of using medical treatments (including drug therapy and surgery) for children under 12 years of age, could be considered as a step in the field of designing complementary methods, which by addressing other causes of chronic obesity including the neurological causes and the psychological structures attributed to it, including the executive functions, has been able to be effective with minimal side effects on the process of treating chronic obesity. The primary step that taking other steps in the direction of improvement and expansion of the designed play therapy package was subject to its retesting and application in other societies, and in comparison, with other methods by interested researchers.

https://hpj.journals.pnu.ac.ir/article_11817_c233d5e438d9e94fc63fefcde78f9e28.pdf