@sandilandscycles like you my threshold work is fine and so I believe ftp is set correctly. I’ve long struggled with vo2 work, its not uncommon. I’ve read advice from coaches many times over the years, and here is what you are suppose to do…
- During a vo2max workout if the intervals are at 120% of ftp you can reduce intensity down to 90% (which results in vo2max intervals at 108% of ftp).
- Either finish the workout, or if you can no longer do the intervals then you are done and the workout is over.
- If that happens with every vo2max workout, then consider taking a two week break from regular training and try a short 2-week vo2max booster block of training (start reading this thread: Short intense period before starting base? Chad's short FTP boost plan - #5 by chad). Then resume your plan.
The SpareCycles articles shared by @abalakov are good ones, I bookmarked those and have been following his blog for years.