So I think if you say people "average" 12 hours for a year it's a huge different scenario than saying someone only has a max of 12 hours. One can and almost assuredly has larger weeks than 12, and the other will only get 12 hours. So as I said if that can be changed, we are talking something different. But if we are saying athlete only gets 1-2 hrs max a day (12 hr week) then that's going to limit the athlete who doesn't recover well and who is also coming off a 2 year "hiatus".
ETA: So no I never called you a liar. I just called your statement that "lots" do sub 10 on 12 hours of training BS. But then again if your using the average, then I think you have to contend that they also included weeks over 12hrs and thus sorta proves my point that only having 12 hours a week max, no way in hell lots of athletes will go sub 10. But if your saying that the entire year including offseason/preseason/race block "averages" 12 then I'll say that also includes weeks above 12 and thus kinda invalidates your actual statement.
I'd like to see a person's training volume who was able to do 12 hours a week for an year. I'd be very curious that they actually able to execute that to even within 20 mins avg to 12 hours.
-USAT L2 coach, M.S. Exercise Physiology