Functional Threshold Power (FTP) is defined as the maximum power a cyclist can sustain for one hour and is used by Peloton to estimate training zones.

“that's actually what's called FTP functional threshold power which is what technically the Peloton is using to estimate your zones”

“so if you go into the Peloton there's called there's something called I think it's called fitness test and it's going to have you do either you get to pick two eight minute all outs separated by some rest I forget how much or 120 minute all out I prefer the 20 minute all out I think it's a better test”

“I think that very often we confuse for example also when we talk about FTP just FTP and we blackbox a metric as FTP instead of saying 60 Minute power or 20 minute power whatever was really accurate with the 20 when you say 20 minute power 60-minute power you basically know that okay you can hold that power for that duration that's the maximum for example before you basically end up dropping too much and you just call it call it D”

“the original definition of FTP U by the authors I think was Andy kogan and that was that basically it's the you you take you first actually have to do a 5 minute allout effort and then basically there's a short pause in between there and then you go to a 20 minute all out effort and then you subtract uh 5% from that to find your FTP so typically it would be your 20 minute all out minus 5% and the reason for that is to try to get a ballp parkage IDE of what your let's say your power your sustainable power output is possible to do over uh an hour”

“I guess the spirit of FTP which is maybe what we want people to think about and not get mired in the details is it really approximates kind of um an energy zone right that is you know more than just an allout but clearly less than what you could hold indefinitely and it's directionally about the highest output you could have for an hour”