Three-Step Validation of Exercise Behavior Processes of Change in an Adolescent Sample

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dc.contributor.authorRhodes, Ryan E.
dc.contributor.authorBerry, Tanya
dc.contributor.authorNaylor, Patti-Jean
dc.contributor.authorWharf Higgins, S. Joan
dc.date.accessioned2023-10-27T19:20:16Z
dc.date.available2023-10-27T19:20:16Z
dc.date.copyright2004en_US
dc.date.issued2004
dc.description.abstractThough the processes of change are conceived as the core constructs of the transtheoretical model (TTM), few researchers have examined their construct validity in the physical activity domain. Further, only one study was designed to investigate the processes of change in an adolescent sample. The purpose of this study was to examine the exercise behavior processes of change in a sample of adolescents using novel three-step confirmatory validation procedures, including: a) the item-level aggregation of processes, b) the higher order structure of aggregation, and c) the discriminant validity of processes across the stages of change. Participants were 15 to 17 year old (N = 284) high school students who completed measures of the exercise behavior processes of change and stages of behavior change. Results using structural equation modeling identified that the processes of Dramatic Relief, Helping Relationships, Environmental Reevaluation, and Self-Reevaluation had acceptable item level measurement properties ( p< .01), while the construct of Social Liberation was not supported. Distinct processes structures were a better fit of the observed data than any higher order behavioral or experiential structure (p < .01). Finally, validation tests of the processes of change across stage of change using discriminant function analysis and univariate F-tests supported Counter Conditioning as the critical process of exercise behavior change in adolescents (p < .01) and found no support for the experiential processes. Changes and implications to TTM theory and measurement were discussed as well as practical implications for exercise behavior intervention strategies.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipRyan E. Rhodes is supported by a Scholar Award from the Michael Smith Foundation for Health Research and with funds from Canada’s Foundation for Innovation, the Michael Smith Foundation for Health Research, the British Columbia Ministry of Health, and University of Victoria internal grants.en_US
dc.identifier.citationRhodes, R. E., Berry, T., Naylor, P. J., & Wharf Higgins, S. J. (2004). Three-step validation of exercise processes of change in an adolescent sample. Measurement in Physical Education and Exercise Science, 8(1), 1-20. https://doi.org/10.1207/s15327841mpee0801_1en_US
dc.identifier.urihttps://doi.org/10.1207/s15327841mpee0801_1
dc.identifier.urihttp://hdl.handle.net/1828/15557
dc.language.isoenen_US
dc.publisherMeasurement in Physical Education and Exercise Scienceen_US
dc.subjecttranstheoretical model
dc.subjectconfirmatory factor analysis
dc.subjectpsychometric theory
dc.subject.departmentSchool of Exercise Science, Physical and Health Education
dc.titleThree-Step Validation of Exercise Behavior Processes of Change in an Adolescent Sampleen_US
dc.typePostprinten_US

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