Abstract: The present invention describes a system for utilizing electromagnetic force as resistance in a strength training device. A controller is used to receive desired exercise parameters from the user. Based upon the desired exercise parameters, an electric current level is calculated and applied to an impermanent magnet to generate an electromagnetic field. The electromagnetic field exerts an electromagnetic force on a magnet belonging to a force applicator to provide resistance to the user during the exercise of muscles with the force applicator. As a result, the strength training device provides resistance for the user in the form of an electromagnetic force rather than conventional gravitational force associated with free weights.