Mark Fenton, host of the PBS series America's Walking and author of The Complete Guide to Walking and Walking Through Pregnancy, has written numerous research articles about exercise science and athletic footwear. Formerly editor-at-large of Walking magazine, Fenton was a member of the United States national race-walking team from 1986 to 1991. He lives in Scituate, Massachusetts.
David R. Bassett is a professor of exercise science at the University of Tennessee, and a pioneer in pedometer research. His studies have been covered by The New York Times, the Los Angeles Times, The Washington Post, USA Today,and countless other national publications. He lives in Knoxville, Tennessee.