Harold (Bill) Kohl III is a professor of epidemiology and exercise science at the University of Texas. Before this, he worked as the lead epidemiologist at the Centres for Disease Control and Prevention in Atlanta. Kohl has worked in the area of physical activity and health since 1984, this has including conducting research, developing intervention programmes and advising on policy issues. Kohl's other areas of specialisation are biostatistics and health promotion. ;;Tinker Murray is a professor of health and human performance at Texas State University. His research interests include school-based and clinical-based youth physical activity interventions for the prevention of obesity and diabetes, coach education and personal fitness and training applications relating to exercise physiology. Since 1984, he has been at Southwest Texas and Texas State University, where he has served as both the director of employee wellness and the director of the exercise performance laboratory. ;;Deborah Salvo is an assistant professor of epidemiology at the University of Texas.