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aa-42 - Health Education Behavior http/heb.sagepub.com...

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http://heb.sagepub.com/ Behavior Health Education & http://heb.sagepub.com/content/37/3/318 The online version of this article can be found at: DOI: 10.1177/1090198109333281 2010 37: 318 originally published online 1 April 2009 Health Educ Behav Philip D. Parker, Andrew J. Martin, Carissa Martinez, Herbert W. Marsh and Susan A. Jackson Stages of Change in Physical Activity: A Validation Study in Late Adolescence Published by: http://www.sagepublications.com On behalf of: Society for Public Health Education can be found at: Health Education & Behavior Additional services and information for http://heb.sagepub.com/cgi/alerts Email Alerts: http://heb.sagepub.com/subscriptions Subscriptions: http://www.sagepub.com/journalsReprints.nav Reprints: http://www.sagepub.com/journalsPermissions.nav Permissions: http://heb.sagepub.com/content/37/3/318.refs.html Citations: at BRIGHAM YOUNG UNIV on September 13, 2010 heb.sagepub.com Downloaded from
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318 Philip D. Parker, Andrew J. Martin, and Carissa Martinez, University of Sydney, New South Wales, Australia. Herbert W. Marsh, Department of Education, University of Oxford, United Kingdom. Susan A. Jackson, School of Human Movement Studies, University of Queensland, Brisbane, Australia. Address correspondence to Andrew J. Martin, Faculty of Education and Social Work, University of Sydney, NSW 2006, Australia; phone: +(61) 5-9351-6273; e-mail: [email protected] Health Education & Behavior , Vol. 37(3): 318-329 (June 2010) DOI: 10.1177/1090198109333281 © 2010 by SOPHE Stages of Change in Physical Activity: A Validation Study in Late Adolescence Philip D. Parker, BA (Hons) Andrew J. Martin, PhD Carissa Martinez, BPsyc, BEd (Hons) Herbert W. Marsh, PhD Susan A. Jackson, PhD The present study explores the validity of a recent stages of change (SoC) measure and algorithm among a sample of late adolescents. MANOVA and structural equation modeling are used to assess the relationship between five SoC groups (precontemplation, contemplation, preparation, action, and maintenance) and a set of dependent measures including physical activity level, physical activity motivation, physical self-concept, and flow. Findings are based on 705 Australian adolescents, using scale score and latent variable approaches, pro- vided support for the construct validity of the SoC measure and algorithm. Specifically, findings reveal that participants in the upper SoC (action and maintenance) score significantly higher on positively geared dimen- sions (e.g., physical self-concept, flow, etc.) and significantly lower on negatively geared dimensions (e.g., maladaptive behavior). Implications for future research and practice with adolescent populations are discussed. Keywords: physical activity; adolescents; stages of change Sedentary lifestyles and insufficient physical activity increase the risk of physical and mental ill health (Australian Institute of Health and Welfare [AIHW], 2003; Dubbert, 2002). Hence, health promotion programs and practitioner-based intervention aimed at increasing physical activity are becoming increasingly important. To most effectively intervene and promote cognitive and behavioral change directed toward more active lifestyles, it is important to understand how individuals are oriented to such changes.
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