So quick run down. Last tested FTP 3 weeks ago was 296 ive been doing high volume sweetspot/threshold with some added zone 2 hours. At the end of this 3 weeks of volume my fatigue and form as very high/low 130+ and -40/50 however i felt very strong and comfortable. My HR was low and my numbers were high. i.e. high sweetspot HR for 320 watts for 7 min repeats. (Elephants +5). I had 3 days recovery. 1 petit and 2 days nothing/ at work. Then I tried Carpathian Peak and barely lasted 5 mins before my HR was through the roof and my legs couldn’t handle it I am at altitude so when i go over a certain HR i can only go so long up here.
Basically I want to understand the factors of this and why I always perform so much better on the bike when i am heavily fatigued. Im not ill, Unfortunately don’t track HR variability or resting. This also happened after last training period where i went into the ramp test very fresh and my HR was overly high compared to the training week before. Has anyone else experienced this or got answers?