Running form, no matter what speed, begins with dorsiflexion.   Dorsiflexion means pulling the toes up during the running stride.  Keeping the toes up allows the forefoot to act like a spring, propelling the foot off the ground after contact.  Ground contact occurs at the back of the ball of the foot near the front of the arch.  Dorsiflexion is a practiced movement till it becomes reflexive.   Altering form will result in less impact on the joints as a more forward running position requires muscular absorption of ground reactive force.

Jaime Gamache M.Ed., CSCS, is Owner and Head Strength Coach of The Way Human Performance Institute ( www.thewayhpi.com and www.facebook.com/pages/The-Way-Human-Performance-Institute/117742824954659 )