I wanted to ask heelstrikers, how do you guys sprint? You sprint on your heels? You change to forefoot only when sprinting? I have never seen any elite sprinter sprint on his heels- not even one.
Are you people so stupid as to not realise that foot contact changes with velocity. Just because some HJ plods along on there heels does not mean the same happens when they sprint.
Foot contact does not change with velocity, it changes with acceleration. When you accelerate, you move the center of mass forward/ you lean forward, and as a result land more forefoot. When you decelerate you raise your body and shift the center of mass backwords, thus landing more on the back of the foot/or heel. Yet, someone who runs forefoot never shifts during a run to heelstrike and vice versa. It is a total different technique that activate different muscles. Forefoot runners even when jogging run on the ball of the foot. Maybe only when they come to a complete stop the stick the heel in the ground in last strides to stop
I have to disagree with you here. With increased velocity comes less contact time with the ground and therefore less likelihood of a heel strike. Set up a quick feet drill and watch all those heel strikers suddenly up on the balls of their feet.