A method and system for rehabilitation of a patient having a physical impairment by providing repetitive motion therapy is disclosed. The system is configured to receive biomechanical data from the patient regarding repetitive movements of the patient performed using a first and second side of the body, respectively, and select, based on the data, an entrainment side according to which repetitive motion therapy is provided. The system further performs repetitive motion therapy by: providing the patient auditory stimulus comprising beat signals output at respective beat times; receiving time-stamped biomechanical data for repetitive movements performed by the patient using the entrainment side in relation to the respective beat times of the beat signals; calculating an entrainment potential for the entrainment side by comparing a timing of the repetitive movements to the timing of the beat signals; and modifying the auditory stimulus as a function of the calculated entrainment potential.

An athletic performance monitoring system, for motivating a user to reach a goal level of athletic activity. The system may motivate the user by calculation a deficit between a current total level of activity and the goal level of athletic activity, and suggesting activity types that the user may carry out an order to reach the goal level, wherein the suggested activity types may be based on activities that are geographically close to the user, or sporting equipment worn by, or in possession of, the user.

The measuring system makes it possible to correct a finish time for an athlete in a running race. The system comprises a personalized transponder module placed on an upper part of the athlete's body and a base station. The transponder module comprises a signal receiver unit, a data, measurement or command processing unit, and a data and/or measurement and/or command signal transmission unit, and a motion sensor for providing measurement signals to the processing unit. The motion sensor may be a gyroscope connected to the processing unit in the transponder unit and configured to determine an angle of inclination of the athlete's body with respect to a vertical or horizontal direction upon crossing the finish line for correction of the race finish time.

A golf club head with an interchangeable or reversible sole rail system having a rail member configured to be received within one or more channels formed on the club head. The rail system allows the player to employ rails along a surface of the club head to improve the interaction between the club head and the ground during the swing.

A compact balance board including a first board having a plate shape, a second board spaced a predetermined distance from and parallel to the first board, a shaft coupled to a bottom portion of the first board, a pivot support connecting the shaft and the second board so as to allow three-dimensional pivotal motions in which the first board or the second board is shaken and rotated, at least one elastic member positioned between the first board and the second board so as to provide elasticity for keeping the first board and the second board in parallel to each other, and a sliding member installed on one end portion or both end portions of the elastic member so as to allow the elastic member to be slidingly rotated when the first board or the second board is rotated.

A putting stroke sensor is attachable to a putter head for measuring characteristics of a putting stroke. A motion sensor integrated circuit is configured to measure acceleration of the putter head along several axes and rotation of the putter head around the several axes during a putting stroke. A processor is programmed to determine a speed, a position and an orientation of the putter head at selective intervals during the putting stroke.

A sensing sports ball is disclosed that includes an inner core of a RF transparent polymeric potting material encapsulating a circuit board assembly electrically coupled to a power source and a transmitter and including at least one sensor electrically coupled thereto that is operably configured to ascertain at least one dynamic physical property of the sports ball, wherein the inner core defines top indentations and bottom indentations opposing the top indentations that span inwardly toward the circuit board assembly, thereby removing material to substantially equate to the weight of an inner core of a conventional sports ball. The ball also includes an outer shell layup and outer surface of a spherical shape and material of a conventional sports ball.

A training, rehabilitation, and recovery system comprises an exercise apparatus including a user interface member coupled to a plurality of links and joints, brakes capable of resisting movement of at least a subset of the links or joints, and sensors capable of sensing movement at the joints or the user interface member. The system also includes a processor configured to receive from the sensors positional data of the links or joints over an initial movement of the apparatus by a user, from which positional coordinates of the user interface member are calculated and a reference trajectory is established. An end space is defined based on the reference trajectory. Over a subsequent movement of the apparatus by the user, the processor receives additional positional data and determines a completion of a repetition based on the positional coordinates of the subsequent movement and the defined end space.

In one embodiment, an exercise system includes a user interface device sized and configured to fit within a user's hand, the user interface device including a microcontroller configured to control operation of the device, a first sensor configured to sense movements of the device, a second sensor configured to sense forces applied to the device, and a communication device configured to communicate data concerning the sensed movements and forces to a separate device.

A motion analysis device includes a calculation unit which specifies a first imaginary plane, that is, a shaft plane formed by a first line segment representing a direction in which a shaft part of a sporting gear in a static posture extends and a second line segment representing a ball hitting direction, with the use of an output from an inertial sensor.