Abstract: A force sensing system comprising a force sensor cell with the necessary electronics to acquire and process various signals. The signals may provide force measurement data for activities performed, for instance, on a weight stack exercise machine.

Abstract: A hydraulic exercise machine system comprises one or more hydraulic cylinders, a mechanism coupled to at least one of the hydraulic cylinders, and a sensor assembly. Displacement of the mechanism by a person exercising on the hydraulic exercise machine displaces pistons of the hydraulic cylinders relative to the cylinders. The sensor assembly is to sense displacement of a piston relative to its cylinder over time.

Abstract: Consistency of motion is monitored over a period of time while a person is exercising on an exercise machine that impacts one or more muscles and/or muscle groups of the musculoskeletal system of the person. A measure of fatigue of the one or more muscles and/or muscle groups for the period of time is calculated. An evaluation of the exercise session is provided, based at least in part on the measure of fatigue and the monitored consistency.

Abstract: A force sensing system comprising a force sensor cell with the necessary electronics to acquire and process various signals. The signals may provide force measurement data for activities performed, for instance, on a weight stack exercise machine.

Abstract: A computerized physical activity system for use with exercise machines comprises a database, sensing systems, each coupled to a corresponding one of the exercise machines, and a computer and communication system coupled to the database and to the sensing systems. The database comprises information about people who will be using the system. A sensing system senses mechanical variables of activity of a person when exercising on the exercise machine. The computer and communication system is arranged to process mechanical properties of the exercise machine and the mechanical variables of the activity to generate user performance data for the activity, to analyze the data based, at least in part, on information stored in the database for the person, to provide feedback based on the data and/or the analysis thereof, and to update the information stored in the database for the person based on the analysis.

Abstract: Consistency of motion is monitored over a period of time while a person is exercising on an exercise machine that impacts one or more muscles and/or muscle groups of the musculoskeletal system of the person. A measure of fatigue of the one or more muscles and/or muscle groups for the period of time is calculated. An evaluation of the exercise session is provided, based at least in part on the measure of fatigue and the monitored consistency.

Abstract: A hydraulic exercise machine system comprises one or more hydraulic cylinders, a mechanism coupled to at least one of the hydraulic cylinders, and a sensor assembly. Displacement of the mechanism by a person exercising on the hydraulic exercise machine displaces pistons of the hydraulic cylinders relative to the cylinders. The sensor assembly is to sense displacement of a piston relative to its cylinder over time.

Abstract: A computerized spinning exercise system comprises a spinning exercise machine, a sensing system, and a computer and communication system coupled to the sensing system. The spinning exercise machine has a flywheel and different resistance settings for the spinning exercise machine may be selected. The sensing system is to count rotations of the flywheel due to activity of a person when exercising on the spinning exercise machine. The computer and communication system is arranged to process mechanical properties of the spinning exercise machine, the count of rotations and a selected resistance setting of the spinning exercise machine in order to generate user performance data for the activity.

Abstract: The energy exerted by a person while exercising on an exercise machine that impacts one or more muscles and/or muscle groups of the musculoskeletal system of the person is determined. Characterizations of the fitness of the one or more muscles and/or muscle groups is determined based, at least in part, from the energy exerted.