• Leanne M Mauriello, Mary Margaret H Ciavatta, Andrea L Paiva, Karen J Sherman, Patricia H Castle, Janet L Johnson, and Janice M Prochaska.
• Pro-Change Behaviors Systems, Inc., P. O. Box 755, West Kingston, RI 02892, USA. lmauriello@prochange.com
• Prev Med. 2010 Dec 1; 51 (6): 451456451-6.

BackgroundThis study reports on effectiveness trial outcomes of Health in Motion, a computer tailored multiple behavior intervention for adolescents.MethodsUsing school as level of assignment, students (n=1800) from eight high schools in four states (RI, TN, MA, and NY) were stratified and randomly assigned to no treatment or a multi-media intervention for physical activity, fruit and vegetable consumption, and limited TV viewing between 2006 and 2007.ResultsIntervention effects on continuous outcomes, on movement to action and maintenance stages, and on stability within action and maintenance stages were evaluated using random effects modeling. Effects were most pronounced for fruit and vegetable consumption and for total risks across all time points and for each behavior immediately post intervention. Co-variation of behavior change occurred within the treatment group, where individuals progressing to action or maintenance for one behavior were 1.4-4.2 times more likely to make similar progress on another behavior.ConclusionHealth in Motion is an innovative, multiple behavior obesity prevention intervention relevant for all adolescents that relies solely on interactive technology to deliver tailored feedback. The outcomes of the effectiveness trial demonstrate both an ability to initiate behavior change across multiple energy balance behaviors simultaneously and feasibility for ease of dissemination.Copyright © 2010 The Institute For Cancer Prevention. Published by Elsevier Inc. All rights reserved.

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