The Power Harness from Power Systems develops explosive leg drive for improved top speed, acceleration and explosiveness. Increase the rate of force production and develop maximum leg drive for improved acceleration. This harness system uses partner-controlled resistance. It is suitable for short sprints, lateral shuffles and explosive forward and backward movements. The unit includes a strong nylon lead, a padded handle constructed of tubular steel and a waist belt. The waist belt allows for multi-directional training.