Cox, Ruby H., Tara S. Stimpson, Kathleen P. Poole, and Michael T. Lamburs. 2003. “Physical Activity Characteristics of Potential Participants in Nutrition and Fitness Programs Based on Stages of Change, Self-Efficacy, and Decisional Balance”. Family and Consumer Sciences Research Journal 31 (4): 361-77. doi:10.1177/1077727X03031004002.