Steven Blair is a Professor in the Departments of Exercise Science and Epidemiology and Biostatistics at the Arnold School of Public Health, University of South Carolina. His research focuses on the associations between lifestyle and health, with a specific emphasis on exercise, physical fitness, body composition, and chronic disease. He has published over 400 papers and chapters in the scientific literature, and was the Senior Scientific Editor for the U.S. Surgeon General's Report on Physical Activity and Health.

In this presentation, Steven will review the scientific evidence on the role of physical activity in the development of weight gain, overweight, and obesity. He will discuss current recommendations related to amount of activity required to prevent weight gain, to lose weight, and to prevent weight regain. There are numerous misconceptions regarding how much activity is required for these objectives, and these will be discussed.

Held February 1, 2010.