As we were discussing a couple of days ago, running shoes have cushioned heels, allowing us to land on said heels instead of our toes. As I stated, almost all animals run on their toes. Striking with the heel first leads to a lot of shock right up the ankle, shins, knees, hips and lower back - leading to injury.
http://library.crossfit.com/premium/pdf/CFJ_Kilgore_Running.pdf?e=1269027630&h=f0f72fc481af9db0bde722df4d0d2818
Modern running shoes feature heels packed with cushioning technology—but
do they prevent the foot from functioning as it was designed?
"The evolution of athletic footwear is quite troubling
in terms of solving or, at worst, producing technical
problems with exercise. Our ancestors functioned quite
well in minimalist footwear or with none at all. How has
the human condition changed so much for us to “need”
advanced insoles, cushions and even one particular
structural shoe element we take for granted: the elevated
heel?"
The less compressible material between your feet and the earth,
the better we will be able to transfer force to move our bodies.
The same applies to lifting weights as well - deadlift, squats, presses !!!
When you use a heelstrike
technique, the calcaneous (heel bone), is abruptly
loaded with force that would have been dissipated if the
force had passed through the arches
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