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Application of the Transtheoretical Model to Physical Activity and Exercise Behaviors in African-American Adolescents

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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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Keywords: ADOLESCENT HEALTH; ADOLESCENTS; EXERCISE; EXERCISE PSYCHOLOGY; HEALTH DISPARITIES; TRANSTHEORETICAL MODEL

Document Type: Research Article

Affiliations: 1: Graduate Research Assistant, Childhood Disparities Research Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, MI 2: Undergraduate Research Assistant, Childhood Disparities Research Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, MI 3: Associate Professor, School of Kinesiology, University of Michigan, Ann Arbor, MI;, Email: [email protected]

Publication date: January 1, 2019

More about this publication?
  • 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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