ocr: a Walking and Running Quit Bipeds To understand the principles governing the energy costs of walking and running, we also need to know about the forces that act on the feet. These can be recorded by means of a force plate, a force-sensitive panel set into the floor. Force plate records show that, both in walking and in running, the forces on the feet are always more or less in line with the legs. When the foot is first set down, both in walking and running, the leg is sloping forwards. The foot presses downward and forward on the ground and the force of ground reaction acts in the oppo- site d ...
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