Thanks for posting that Bob. I think it's interesting to see a specific recommendation about exercise intensity/frequency:
A training frequency of 2–3 sessions per week using an initial training intensity of 50–70% of VO2-max corresponding to 60–80% of maximum heart rate is recommended.
I looked through the references and I still don't see evidence that any studies have been done to evaluate whether exercise has any impact on the disease process. I think they should take their intensity/frequency recommendation and do a trial where they measure progression / relapses. Do you think we could get big pharma to fund that?