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 fitness system includes a computing system in communication with a wearable device and multiple pieces of exercise equipment. The wearable device is associated with a user, includes a user sensor for detecting motion, and outputs user sensor data. The multiple pieces of exercise equipment are configured to be used by the user to perform an exercise therewith, include an equipment sensor for detecting motion, and output equipment sensor data. The computing system receives and processes the user sensor data collected at a first time and the equipment sensor data collected from the multiple pieces of exercise equipment at the first time to associate the user with one of the multiple pieces of exercise equipment used by the user at the first time, determines exercise information, exercise recommendations, or both, and transmits the exercise information, the exercise recommendations, or both.

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.

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.

Abstract: An example exercise tracker includes a grip for receiving an adjustable amount of exercise resistance, a force sensor having one or more strain gauges programmed to output a force signal representing a force applied to the grip, and a motion sensor programmed to detect movement of the grip and output a motion signal. The exercise tracker further includes a processor programmed to receive the force signal and the motion signal and determine, from the force signal and the motion signal, exercise data including the amount of resistance applied to the grip.