James F. Sallis, Ph.D is Professor of Psychology at San Diego State University and Director of Active Living Research, a program of the Robert Wood Johnson Foundation.  His primary research interests are promoting physical activity and understanding policy and environmental influences on physical activity and nutrition.  His health improvement programs have been studied and used in health care settings, schools, universities, and companies. 

He is an author of over 400 scientific publications, on the editorial boards of several journals, and is one of the world's most cited authors in the social sciences.  Dr. Sallis has received awards from the American College of Sports Medicine, Society of Behavioral Medicine, and American Psychological Association Division of Health Psychology. 

He is a frequent to consultant to universities, health organizations, and corporations worldwide.  He served on the editorial committee for the U.S. Surgeon General's Report, Physical Activity and Health.  Dr. Sallis is co-author (with Neville Owen) of Physical Activity and Behavioral Medicine (Sage, 1999).  In 2004, Time Magazine identified him as an "obesity warrior".  http://www.drjamessallis.sdsu.edu