Why do different foot strikes matter?
Why do different foot strikes matter? Derek H. Kim DPT
Daniel Lieberman’s study on the difference between heel striking and forefoot striking shows why a large collision is generated when heel striking and why such a small collision is generated when forefoot striking.
In heel striking, the collision of the heel with the ground generates a significant impact transient, a nearly instantaneous, large force. This force sends a shock wave up through the body via the skeletal system. In forefoot striking, the collision of the forefoot with the ground generates a very minimal impact force with no impact transient.
Therefore, quite simply, a runner can avoid experiencing the large impact force by forefoot striking properly. (Daniel Lieberman et al.)
Heel strikes and Ground reaction force V.S. Forefoot Strikes and Ground Reaction Force