US Patent 8444533 Exercise apparatus and training method

A high-intensity interval training method comprises supporting an individual upon an upper body engaging element in a forwardly inclined position while the individual is propelling himself in a forward motion on a non-motorized rotatable endless belt; obtaining a performance feedback by sensing at least one of a rotation of the belt and an impact force exerted upon the upper body engaging element by the individual during the exercise cycles; and using the performance feedback to measure performance of the individual and control the exercise cycles to create an exercise regimen that requires the user to operate at at least about 85% of the individual maximum capacity during the high intensity anaerobic intervals.