The type of cycle is not important. What is important is the cadence. But FYI, I use the standard road bike set up on a trainer. The program works just as well with the recumbent or spin cycle. I am told that the Theracycle does not produce the same results. A person normally cycles at about 55 RPM, but in the forced cycling program, the patient rides a 10 minute warm-up session, 40 minutes at 80 to 90 RPM and 10 minutes cool down. If you think about it, they forced cycling pace is about half again the normal pace. So if your normal pace is 40 RPM, it might be interesting to try to cycle at 60-70 RPM for the forced paced segment. Much more information can be found in the pedaling for Parkinson's thread on this forum.

I was diagnosed with Parkinson six years ago. It has been an interesting trip.