Understand!

High-Intensity Interval Training (HIIT), the basis of the ERASE trial, is compatible with many other forms of exercise, other than running.

It can be something you just include, at the smallest degree at first, inching your way up over months, and then, almost imperceptibly, you begin to be aware of improvements, as you compare your progress over weeks and months of consistent effort.

I’m sure a HIIT protocol that is compatible with your current exercising preference, for example your swimming routine could probably easily be adapted.

You would want to match a HIIT protocol with an exercise form that you already can do (and currently enjoy) and doesn’t worsen an existing condition (such as your knee).

Here’s to you, for all the best, AND a clear PSMA PET scan!

Yes, I hear you with the running. I tried running once I was out of the wheelchair, but it was more of a 1K shuffle, and even that was kind of a miracle (it wasn't certain I'd walk again at all after the tumour compressed my spine). For me, walking works much better. At first, 1,000 steps in a day would knock me out, but now I can do up to 15,000 on a good day (8,000 more typically). Combined with light weight training and chores around the house (gardening, snow clearing, yardwork), that keeps my heart and body in reasonably good shape while respecting my disability (I never got 100% back below my ribs).

Ditto for you with your knee. The important thing isn't to follow a rigid programme, but to stay active however we're able. Some trials (like ERASE that @handera mentioned) put participants on a fixed exercise programme, but that's not necessarily because there's something magic about that specific set of activities (other than the fact that it was high intensity); it's just to make sure they were comparing apples to apples with the trial results.