I've read that too. Don't believe everything that you read. Most people will see pictures of elite runners mid-stride with the foot of the lead leg dorsiflexed and assume that they are going to strike the ground in that position, but that's not how it works. If that were to actually occur, the leg would be fully extended and about 45 degrees from the plane of the torso when the foot touched down, and it would touch down well forward of the plane of the torso. What is actually happening is that as the runner continues through the air, before the foot reaches the ground, the torso continues forward and the foot is pulled backward. Ideally, when the runner lands, his foot will be moving backwards relative to the body at the same speed as the torso is moving forward relative to the ground, with the result being that the component of the velocity of the foot in the direction parallel to the ground is very small or zero, so that the ground functions decelerate the foot in the direction perpendicular to the ground, but not in the direction parallel to the ground. Notice the posture of the elites next time you watch a race. Most of them will have a slight forward lean, but they will be leaning forward all the way from the ground up, not bent over at the waist. It would be very difficult to land heel first, with the foot in plane with the torso, with such posture. Try it sometime. I'd recommend you try it on a soft surface, because you'll probably be a nose striker, rather than a heel striker or a forefoot striker, if you try to land heel first with your body positioned in such a way ;)Finally, there's just no f&@#ing way that Abebe Bikila ran a marathon barefoot landing heel first. Not a chance.
idealist wrote:
I think I read that somewhere, too - everyone hits on the heel and rolls forward for distance running.