Abstract
Background: Cardiovascular diseases are among the most common chronic diseases. The role of heart attacks in death and the shortening of life is considered one of the most emotionally and psychologically influential diseases among individuals; therefore, the use of psychological and medical treatments for this group of patients is emphasized. Objectives: The present study sought to assess the effectiveness of positive therapy in emotion regulation and distress tolerance in patients with coronary heart disease. Methods: The present study used quasi-experimental designs of pre-test and post-test followed up with a control group. The sample of this study included 45 subjects with coronary heart disease who were selected using available sampling in 2023. The distress tolerance questionnaire developed by Sevens and Gaher (2005) and the emotion regulation questionnaire developed by Granfsky et al. (2001) were used to collect the data in this study. Multivariate analysis of variance (MANOVA) was used to analyze the data, and SPSS software (version 26) was used to carry out statistical analyses. Results: There was a statistically significant difference (0.05) in emotion regulation and distress tolerance in patients with coronary heart disease between the experimental and control groups. Conclusions: Positive therapy can be inferred to be an effective intervention method for enhancing emotion regulation and distress tolerance in patients with coronary heart disease.