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They did one for FTPs
Top of bell curve for men
18-30: 3.25 - 3.5 FTP/kg
30-40: 3.0 - 3.25 FTP/kg
40-50: 2.75 - 3.0 FTP/kg
50-60: 2.75 - 3.0 FTP/kg
60-80: 2.25 - 2.5 FTP/kgTop of bell curve for women
18-30: 2.25 - 2.5 FTP/kg (breaks the bell curve a bit, 2nd highest is 2.75-3.0)
30-40: 2.25 - 2.5 FTP/kg (It’s pretty close to 2.5 - 2.75)
40-50: 2.25 - 2.5 FTP/kg
50-60: 2.25 - 2.5 FTP/kg
60-80: 2.0 - 2.25 FTP/kg
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Also if you're interested in this sort of "Where am I on a curve" then def recommend using intervals.icu which is free, takes your strava data and compares you to their other users and spits out stuff like this, where you can filter by age etc
On the points above about variety/consistency different people are going to have different mentalities/capabilities. For some people knowing here's precisely what riding I'm going to be doing for the next x amount of days is a straightjacket for others there's a relief in not having to think about it.
Trainerroad or Sufferfest should release an updated version with bell curves for different power durations. They must have a huge data set, far more than Coggan had to work with.
Not that it makes any difference, but it is interesting to see what percentile you are at.
Listening to trainerroad podcasts, their stance seems to be about improving your FTP and then see where your race winning talents are. And if you have 4.5h of turbo time available, sweet spot work is the best bang for buck.