Thanks, Mark. That is a more accurate description of the UB approach.

It's interesting, though. If you watch the university's promotional video of one of the athletes who had success with the program, he says, "at first when I started exercising, I had a lot of symptoms come back...but I just kept going with it, and then eventually after about a week or two I started noticing the headaches kind of diminishing...the nausea was one of the first things that went away too."

http://www.youtube.com/watch?v=pUEmfnIIhwM

This is what made me think there was an element of "pushing through" symptoms, even if theoretically the UB approach has its patients staying below the symptom threshold.