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Journal of Pediatric Psychology Advance Access published online on December 17, 2008
Journal of Pediatric Psychology, doi:10.1093/jpepsy/jsn126
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© The Author 2008. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Using a Website to Build Community and Enhance Outcomes in a Group, Multi-Component Intervention Promoting Healthy Diet and Exercise in Adolescents

Lynn L. DeBar, PhD1, John Dickerson, MS1, Greg Clarke, PhD1, Victor J. Stevens, PhD1, Cheryl Ritenbaugh, PhD, MPH2 and Mikel Aickin, PhD2

1Center for Health Research, Kaiser Permanente Northwest and 2Department of Family and Community Medicine, University of Arizona

All correspondence concerning this article should be addressed to Lynn DeBar, Center for Health Research, Kaiser Permanente Northwest, 3800 N. Interstate Ave., Portland, OR 97227, USA. E-mail: lynn.debar{at}kpchr.org


  Abstract

Objective This article describes website use and behavioral outcomes in a multi-component lifestyle intervention promoting healthy diet and exercise. Methods A 2-year randomized clinical trial to improve bone density in 228 adolescent girls, the intervention included a website designed to enhance intervention adherence, retention of participants, and behavioral outcomes. Measures included diet and exercise recalls, surveys, and web-usage data. Results Website use was associated with increases in calcium intake (ß = 69.72, p = .01, ES = 0.15) and high-impact activity (ß = 10.93, p = .04, ES = .13). Use of web pages related to behavioral feedback and communications was not significantly associated with behavioral outcomes. The most visited website pages had content related to incentive points, caption contests, and fun facts. Conclusions Web elements of a multi-component intervention may promote retention and engagement in target behaviors. Such websites may be most acceptable to adolescent participants if they blend fun and behavioral elements, rather than exclusively focusing on behavioral changes.

Received March 5, 2008; revision received November 4, 2008; accepted November 4, 2008


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