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The Use of the Theory of Planned Behavior to Explore Beliefs About Sugar Restriction

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Objectives: To identify beliefs underlying attitudes, subjective norms and perceived behavioral control regarding sugar restriction using the theory of planned behavior, TPB. Methods: A survey of 981 students was conducted in Dar es Salaam, Tanzania. Results: The TPB predicted behavioral intention, with R2 =0.25. Analysis of variance showed consistent differences between intenders (strong intentions) and nonintenders (weak intentions) with regard to beliefs of immediate sensory concerns and psychological control factors. Conclusions: Support was provided for the TPB constructs to predict intended sugar restriction. Beliefs distinguishing intenders from nonintenders represent targets for interventions aimed at maintaining a low-level sugar intake among students in Tanzania.

Keywords: Tanzania; sugar consumption; theory of planned behavior; university students

Document Type: Research Article


Affiliations: Center for International Health, University of Bergen, Armauer Hansen Building, N-5021 Bergen, Norway.

Publication date: 2003-01-01

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  • The American Journal of Health Behavior seeks to improve the quality of life through multidisciplinary health efforts in fostering a better understanding of the multidimensional nature of both individuals and social systems as they relate to health behaviors.

    The Journal aims to provide a comprehensive understanding of the impact of personal attributes, personality characteristics, behavior patterns, social structure, and processes on health maintenance, health restoration, and health improvement; to disseminate knowledge of holistic, multidisciplinary approaches to designing and implementing effective health programs; and to showcase health behavior analysis skills that have been proven to affect health improvement and recovery.

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