not picking on you, but I hear this argument and it makes no sense.
- built workouts designed around Coggan’s classic levels (7 levels or zones)
- original promoted 8-min or 20-min test for FTP estimation
- introduced ramp test for FTP estimation
- didn’t change any workouts after introducing the ramp test
You want an accurate FTP estimate to set training levels/zones for:
- recovery (level 1)
- aerobic endurance (level 2)
- tempo (level 3)
- sweet spot
- threshold (level 4)
Doesn’t matter if that comes from ramp test, 8-min test, 20-min test, or some other test. TR workouts are scaled to Coggan classic levels. And those levels assume you have a good estimate of FTP. If the 20-min test gives more accurate results than ramp test, then use the 20-min test to estimate FTP! Its that simple.
And above FTP you may need to personalize the % FTP used in workouts, as there is a lot of individual differences on ability to do work above FTP (vo2max and anaerobic capacity). Its why Coggan updated the classic model and introduced Coggan iLevels (individualized levels). You may fall into the middle of the bell curve and find TR’s 120% for 3-min vo2max intervals is perfect. Or you may fall outside the bell curve and need to increase or decrease that %.