Err, I think Fred was saying that oxygen ratio, which I suppose means VO2 Max, is the main factor. The reality is, VO2 Max doesn't play a huge role. It's one indicator of fitness, but it doesn't say anything about the althete's efficiency, or their ability to recover after a race (something Jan Ulrich is very good at; it's why he can begin the Tour at a lower fitness level than Lance, yet be very competitive near the end), or how their performance deteriorates with altitude, or how much their immune system is suppressed by hard training.DemoCoder said:No one is saying that VO2_max determines the winner. It may be neccessary, but not sufficient. If two riders with nearly the same VO2_max enter, the one with the better training, strategy, and mental committment will win. However, a guy with 2x the VO2_max of another, might be able to spank his competitors without much effort.
You want to see mental determination? Look at Ultramarathon runners who run from 1000-3000 miles. The 3000 mile trans america race for example, has runners running 45 miles a day for 64+ days.
I've cycled enough to know that even if I could match Lance's VO2 Max, my recovery rate is far too slow for me to ever be able to ride in a tour. (And presumably my mental toughness isn't up to scratch either given how quickly I quit trying to be the uber cyclist )
Yeah, Ultramarathon runners are nutty. Race Across America (RAAM) is another one. It's a non-stop bicycle race across America. The winning solo time is in the order of 8 days.