I work in the cath lab and our docs refer some patients for it. They do it at our cardiac rehab center. To watch the promotional video it looks BARBARIC but to see it in action, it's really not that bad. I went and talked to a patient while he was having a session and he said it's the most relaxing part of his whole day!! Once you get used to it he said it doesn't bother you at all. Hard to read a book because of all the movement but he said that during his EECP is when he replies to all his e-mails. They also have a TV/VCR there so you can watch a movie during your session if you want. We have seen patients have really good results with it and a great reduction in anginal symptoms and I have heard (but not personally seen) that patients really do show great collateral growth on repeat caths.
Had one patient say that it really hurt and she developed worsened varicose veins with it.
Hope this helps!