"Where the mind goes, the body follows" - me
You guys are picking technical nits....a few grams this, XXX feet of climbing that... While training and overall fitness is the overriding factor in physical effort, you can't forget the mental aspect. How an athlete is feeling mentally is a large part of the performance as well.
Im sure if I told you about some of the demanding efforts and feats of endurance of my younger days in the military, you'd all scoff....heck, I would too at this point, as when I look back at some of the things I accomplished as a soldier, it boggles my own mind !
My point is, is that the the body can do much more then the mind normally allows. There is truth in that old saying about "Mind over matter" .......
Cheers,
Joe