Christel Autuori is a graduate of Lotus Gardens Yoga and is a certified AcuYoga instructor. She has been practicing yoga for over thirty years, primarily the gentle Kripalu and Anusara styles of yoga. She has been teaching in Ridgefield, CT for the past six years. Christel has written several articles about yoga which have appeared in national publications. Christel has been trained and is certified to teach yoga to children through Growing Lotus Kids She is registered with the nationally recognized Yoga Alliance. Christel is also a certified Reiki I and II practitioner, and is a frequent contributor to www.NourishThis.com, providing information about yoga, meditation, and guided imagery.

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Research using theory-based interventions to promote regular physical activity (PA) has increased substantially over the past decade. The purpose of this article is to provide a review and summary of PA intervention research specific to fidelity to intervention theory, providing an overview of the concept of fidelity to intervention theory, defining the evaluative components of fidelity: (a) conceptualization of the problem, (b) operationalization of the theory, (c) specification of mediating processes, and (d) specification of outcome variables. Using journal scans and computerized literature database searches, the authors identified 470 PA activity intervention studies that incorporated a theoretical perspective. A validity framework explicated by was used to summarize intervention research in light of fidelity to intervention theory. In all, 15 intervention studies met the inclusion criteria and were incorporated into the review. Theoretical models for health behavior change, including social cognitive theory (SCT), cognitive behavioral theory (CBT), the transtheoretical model (TTM, the TTM combined with SCT), the reversal theory (theory of psychological reversals), and the disconnected values theory, were used as a basis for intervention design and evaluation.

West J Nurs Res. 2009 Apr;31(3):289-311. Keller C, Fleury J, Sidani S, Ainsworth B. Arizona State University, USA. colleen.keller@asu.edu