Reduce FTP/Kg, Maintain FTP

[MI-XC]

@TractorBiker

that once I get to a certain FTP (lets say 300 W), the longer duration VO2 Max, Supra-Threshold workouts really start to give me joint pain, either at high or low cadence.

Since it happens no matter the cadence, I’m guessing that the FTP has nothing to do with it. It’s likely all the previous months work (TSS) to get to that point that’s the culprit. You’ll need to address what’s the cause as soon as it arises. Can you actually handle longer VO2 at 275w? Is it the duration, intensity, previous TSS, form on the bike st VO2?