jedidiah wrote:
I don't know, but this might have something to do with it.
http://www.vimeo.com/3853579About 20 sec in it goes slow motion and you can see that both Haile and Sammy Kitwara land on their forefoot and their heel never hits the ground for 13.1 in 59.xx.
That (that top east africans, or other top runners "have their heel never hit the ground" ) is a myth 99% of the time. I've watched super slow-mo of El G, Bekele, Geb, and the rest running track races (FAST track races), and their heels touch the ground with virtually every stride. They land on the outside of their foot towards the midfoot/forefoot, and roll inside and back. Their heel touches.
Even top sprinters often touch their heel to the ground.
And in fact, in your OWN video, which slows things down, you can see Haile's heel touching the ground with virtually every stride. Did you really watch it?? And now that he has become a 1/2 marathoner/marathoner, he is even less on "his toes." Watch your slow-mo video: he lands on the outside of the foot, towards the MIDDLE....not even on his forefoot, and when he rolls in his whole shoe touches, with the heel touching maybe only .01 later than the forefoot.
Again, this is a myth that top guys literally run on their toes. What they DO indeed do is: they land with their foot under their center of gravity (not out in front of them), and DON'T crash their heel down hard first, and usually land more towards midfoot, and then after their entire shoe is on the ground (with yes, the weight FOCUSED on their forefoot) they push off their midfoot/forefoot lightly and quickly. So there is no crashing heel in front of center of gravity, and no staying "stuck" on the ground with their body weight centered on heel. But there is also certainly no literal "running on their toes with no heel touch." That last part is a myth.