Abstract: An exercise system includes an exercise machine and a sensor system. The exercise machine includes a chassis and a sliding platform. The chassis defines an incline. The sliding platform is configured to support a user thereon and translates along the incline. The exercise machine is configured for the user to perform resistance exercises therewith. The sensor system includes a position sensor that measures a position of the sliding platform relative to the chassis.

Abstract: A load sensor includes a bolt configured to support a pulley of a weight machine, and a strain gauge laminated onto an exterior surface of a shoulder section of the bolt.

Abstract: A weight machine sensor includes a force sensor, a position sensor, and a processor. The force sensor is programmed to output a force signal representing a force applied to a pulley-disposed on a cable incorporated into exercise equipment having a stack of weights. The position sensor is programmed to detect motion of the stack of weights and output a position signal representing the motion detected. The processor is programmed to receive the force signal and the rotation signal and determine, from the force signal and the position signal, exercise data including an amount of exercise resistance and a number of repetitions performed.