ArticleIranian journal of public health2025
Mediating Role of Physical Activity in the Relationship between Personality Traits and Body Mass Index (BMI) among the Participants of the Employees' Health Cohort Study of Iran (EHCSIR): A Generalized Structural Equation Modeling.
Article in Iranian journal of public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Considering the high importance of the problem of obesity and its related factors, we aimed to investigate the mediating role of physical activity in the relationship between personality traits and body mass index (BMI) in the participants of the employees' health cohort study of Iran (EHCSIR) using generalized structural equation modeling (GSEM). Methods: A secondary analysis with cross-sectional approach was conducted on the existing data using multilevel GSEM. The primary data of the cohort was collected from July 2017, Iran University of Medical Sciences, Tehran, Iran. Personality traits were exposure, physical activity was the mediator, and BMI was the outcome. Sex was the stratifying variable. Then, pathways with the largest P values were removed one by one using backward stepwise approach. Results: The data of a total of 3554 participants of EHCSIR were used. Sex was subjected for grouping the analysis. In males, extroversion (EX) was the only personality trait associated with both physical activity and BMI. In the direct pathway, EX was positively associated with BMI. In the indirect pathway, EX was negatively associated with BMI ( Conclusion: The role of personality traits in obesity was more dominant in females, while in males, physical activity had a role in obesity. The hypothesized mediation pathway of the study title was not approved in females, and in males, was approved only for EX personality trait.
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