Hi Gordo, as you say, FTP can be all over the place, but I liked Friel‘s statement that your threshold HR is quite stable. That’s why I prefer to keep an eye on HR rather than power. Mine is 158, above that I start to cook. I look at the power when I‘ve finished. Doing a 10-20min on the tacx, holding 158, gives me a pretty good threshold power estimate
Hi Gordo, as you say, FTP can be all over the place, but I liked Friel‘s statement that your threshold HR is quite stable. That’s why I prefer to keep an eye on HR rather than power. Mine is 158, above that I start to cook. I look at the power when I‘ve finished. Doing a 10-20min on the tacx, holding 158, gives me a pretty good threshold power estimate
I recommend athletes are careful with those sustained efforts.
Ideas on my thinking are in this Season Start Up article:
https://feelthebyrn.substack.com/p/season-start-up-part-one
I agree that LT2 HR can be relatively stable in a well-trained athlete.
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Much easier than a 20min FTP test, which is actually a max effort test, therefore max HR in theory….
Just did a 20km test on the bike, yep, a rare event for me 😉. 10mins at threshold HR is doable for me though