Document Type : Research articles

Authors

1 Assistant Professor , Social Determinants of Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

2 Professor, Department of Health Education and Promotion, School of Public Health, Institute of Health Research, Tehran University of Medical Sciences, Tehran, Iran

3 Professor, HIV/STI Surveillance Research Center, WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

4 Assistant Professor of Epidemiology, Department of Epidemiology and Biostatistics, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

5 Professor, the Neuroscience Research Center, Kerman University of Medical Sciences, Kerman, Iran

6 Associate Professor, Social Determinant of Health Research Center, Yasuj University of Medical Sciences, Yasuj, Iran

Abstract

Background: Theory of planned behavior (TPB) has not been adequately addressed in the field of physical activity among Iranian women.
Objectives: This study aimed to determine factors affecting physical activity behavior among women based on the theory of planned behavior.
Methods: This cross-sectional study was conducted on 398 women in Kerman, Iran. The women were selected through the multistage random sampling method. Data were collected using the international physical activity questionnaire (IPAQ) and a researchermade questionnaire based on the constructs of the theory of planned behavior and analyzed using structural equation modeling (SEM).
Results: The mean age (SD) of participants was 36.9 (9.9). Perceived behavioral control (β = 0. 16, P = 0. 013) and behavioral intention (β = 0.16, P = 0.005) had a significant positive direct effect on physical activity behavior. Moreover, instrumental attitude (β = 0.04, P = 0.003), subjective norms (β = 0.04, P = 0.003) and perceived behavioral control (β = 0.03, P = 0.002) had a significant positive indirect effect on physical activity behavior. Behavioral intention and perceived behavioral control constructs predicted 6% of variance of physical activity behavior.
Conclusions: Given that the constructs of behavioral intention and perceived behavioral control could predict physical activity behavior, health promotion interventions should be designed with an emphasis on these factors in order to promote physical activity in women.

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