Application of the Transtheoretical Model to Physical Activity and Exercise Behaviors in African-American Adolescents
Objectives: In this study, we examined the inter-relationships between Transtheoretical Model (TTM) constructs (stages of change, self-efficacy, decisional balance, processes of change) and determined the utility of TTM to predict physical activity in African-American youth.
Methods: A community-based sample of 109 African-American youth (62% girls, age: 14.8 ± 0.2 years) were included in this analysis. TTM constructs were assessed using the Patient-Centered Assessment and Counseling for Exercise questionnaire. Moderate-to-vigorous physical activity
(MVPA) and total physical activity (TPA) were measured objectively using accelerometry. Results: Higher self-efficacy was observed at higher stages of change in both boys and girls (p = .02). Despite higher MVPA (p < .001) and TPA (p < .001) in boys, there were no sex differences
in TTM constructs (p > .05). Stages of change predicted MVPA in girls, with those in the maintenance stage reporting significantly more MVPA compared to those in precontemplation/contemplation (p = .03) and preparation stages (p = .04). Cons predicted higher TPA in boys only (p = .02).
Conclusions: These findings suggest specific TTM constructs relate to physical activity in African-American youth and the importance of these constructs may differ by sex.
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Document Type: Research Article
Graduate Research Assistant, Childhood Disparities Research Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, MI
Undergraduate Research Assistant, Childhood Disparities Research Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, MI
Associate Professor, School of Kinesiology, University of Michigan, Ann Arbor, MI;, Email: [email protected]
Publication date: January 1, 2019
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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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