Originally Posted by
PeteHski
Maybe. but a) they are national TT champions and b) they are not in their 60s.
I am sorry, as often times the case, I do not get your point. Champions can be any age.
How one chooses to train impacts the types of events one will do better in, relative to one's genetic potential. If someone wants to be a track racer or crit racer, they will train differently than a road racer or triathloner. Age is irrelevant. The extent that one can shift their power duration curve towards endurance or towards anaerobic power is clearly shaped by muscle fibre type but it is equally affected by the type of training, that is irrefutable.
The simple fact? There are not many subjects lining up to do 3 hour bouts in the name of science. When XERT was in its early days, they would have a silly high percentage of FTP for a 3 hour effort. I asked them many, many times for a study or data to support. Or, even just one power file. So, I did a pretty exhaustive search on the subject.