Do you understand what he is writing? That is not changing the definition of FTP. That is the alternate testing scenario and he warns that one should not get a false sense of precision using the correction factor.
What’s your FTP?
It’s 4W/kg
What is the max you have you held that for?
Oh, 1 x 8 mins
And it’s your FTP?
Yeah
OK.
Maybe you should take your own advice. Taken from p. 4, top:
In this document Coggan writes that a 40k TT is one way to estimate FTP. Later on that page he suggests others (see earlier quote). He does not define FTP as the average power in a 40k TT.
I’m not even sure what you are arguing or trying to prove at this point. I’m bowing out.
I’m not your search engine.
The evidence is clear that he has drastically shifted his definition of FTP and he has routinely stated here that it is not “about an hour”. If you want to defend a statement that he no longer adheres to, that’s on you.
Most sensible people bowed out at the first mention of Coggan…
If threshold feels like hell, then what zone feels like heaven? 
Sometimes you ride easy, sometimes you ride hard. All Intensities matter
I feel like you deliberately misreading my comments. I didn’t chose five minutes recovery, just following the protocol of the workout.
All of this reminds as to why I have a coach tell me what to do. There is too much theory and nuance in the science for me to adequately grasp.
Regardless, threshold workouts are unpleasant.
There really isn’t….we like to make it more complicated because we thing there is some silver bullet out there that will suddenly unlock our hidden potential.
Ride your bike. Ride it a lot. Some days, ride hard. Other days, ride easy. Do more of that when you can.
Pretty simple, really.
In my experience, generally physiologists don’t make the best coaches (yes, there’s some notable exceptions). What works in the lab doesn’t necessarily always translate.
And some of the best coaches know what works but not necessarily why.
Agree. Sometimes I ask my coach why. Most times not. It’s not that important to me presently. I wholly respect that for others the pursuit of this knowledge is enjoyable and part of their cycling experience, but I got enough going on outside of cycling that I need to save time and bandwidth where I can.
Threshold is hard man, there’s no way around it. The guideline of ftp being what you can sustain for an hour translates to me as; what could I hold for an hour with a gun to my head, whilst well rested and correctly fuelled. Riding at FTP is physically hard and starts to hurt quickly - I find it easier outside on a climb, so I try to do longer efforts outdoors.
Maybe your zones need adjusting slightly, but also don’t put the pressure on yourself. Theoretically, you should be able to sustain ftp for 30-60 mins, but that doesn’t mean that it’s not uncomfortable after 5.
I’m no expert but I’d also say maybe try doing more traditional longer vO2 max sessions, 30/30s are good and fun, but 3-4 minute intervals really bite and test your mental resilience (I find this to be the case anyway!!)
like everything else on this thread, this is only my point of view - so take it with a pinch of salt! good luck!
That’s only a good guideline if you’ve recently been training your TTE. If you haven’t, then the power you can maintain for 35 to 40 minutes is very likely going to be nearer to your FTP …
… but taking any duration and starting from there to get an estimate of your FTP is still getting the sequence wrong.
The best way to do it is to find your FTP by feel/RPE and then see how long you can hold it. That way you get two mumbers, FTP and TTE, and that’s the perfect start point for deciding what threshold and sweetspot workouts to choose for your next training block.
Some more advanced “FTP/TTE” test protocols use a ramp test to help the athlete determine what power number to shoot for in the TTE test.
To add to that: TTE is also trainable, and this may or may not be the right thing for you given your numbers.
Moreover, if you are doing your TTE test at a power level that is e. g. 97 % of your power at MLSS, your TTE will increase. Similarly, overshooting your power at MLSS can lead to much shorter TTEs. So interpreting the results of a TTE test is not as straightforward as it appears.
This is good point, and reason why I like to train Z4 either 95-98% or 102-105% range – to be either side of steady state that can fluctuate day-to-day anyway.
Of course, 40k TTers might want train exactly at threshold to learn balancing there.
People will do anything but ride to RPE.
That’s because it almost always leads to a number which is lower, and if that number isn’t tied to self worth, what’s the point of riding at all?
I don’t find RPE to be a good guide for an all-out effort, when I pace all-out (by feel) I don’t go by RPE.