I have finished Taylor -2 this morning, which consists of 3 sets of 14 30-30s, (30 seconds at 120 % FTP, 30 seconds at 40 % FTP). I really enjoy these kind of workouts, but I found the difficulty level way too easy. My average power per interval increased (I have a dumb wheel-off trainer), and in the end I was able to easily do 125 %. For the last interval I did 140+% just for fun. And I still felt like I could easily do one more set (I was strapped for time, so I didn’t).
I have recently tested my FTP and because I have tried longer, steady-state workouts, I think it is pretty accurate. (I tested at 299 W, but I had a bad day and so I added 6 W to give me 305 W.) So I don’t think I have underestimated by FTP by that much.
Is there a way to test VO2max power so that I can scale VO2max workouts from the rule-of-thumb 120 % to the power level that really corresponds to my VO2max power level? And does that percentage shift significantly over time?