Wayne Wescott, Ph.D conducted a study in 1991 comparing two workout methods over the course of 8 weeks among 72 over-weight individuals. The two groups exercised for 30 minutes per workout, however, one group did steady cardio for the full thirty minutes on a stationary bike. The other group did ...

I found a wonderful article at SportsScience (www.sportsci.org). It breaks down several studies detailing the effects of HIIT on endurance performance. The interesting thing about the study isn't that it showed significant gains in performance among athletes participating in HIIT training, but that different intervals and rest periods seemed to ...