Patent ID: 8363891

Claim:
A system comprising: at least one memory; at least one processor operable to: receive video data of a person running; based on the video data, determine a position of at least an ankle of a leg of the person, a ball of a foot of the leg of the person, and a heel of the foot of the person during the running; based at least on the position of the ankle of the leg of the person, the ball of the foot of the person, and the heel of the foot of the person during the running: calculate a first curve indicative of an acceleration of the leg of the person contacting a surface during the running; and calculate a second curve indicative of an acceleration of the center of mass of the person during the running; and predict a force applied to the surface by the person during the running by combining the first and second curves; and a user interface operable to display the predicted force.