A golf club includes a shaft, grip and head attached to the shaft. The head includes a club face, a heel, a toe, and a sole. The shaft is attached to the head proximate the heel; the toe is distal from an attachment point of the shaft. The sole corresponds to a bottom of the head as bounded by the toe and heel, and the leading edge and trailing edge. The leading edge is formed at the intersection of the club face and the sole. The sole defines a plurality of substantially rectangular furrows, which do not extend onto the ball contacting surface. Each furrow is parallel to the other furrows and each is bounded by a rib, such that the ribs separate and define the furrows. Each furrow has flat side surfaces and a flat bottom surface parallel to the back surface of the head.

A motion measurement apparatus according to an embodiment of the present technology includes a controller unit. The controller unit extracts, from an acceleration in each direction of three axes that includes a dynamic acceleration component and a static acceleration component of a detection target that moves within a space, the dynamic acceleration component of the detection target, and generates, as a control signal, a change in kinematic physical quantity of a posture of the detection target from the dynamic acceleration component.

A golf target system featuring a hitting bay including a golf ball launch monitor system, a playing area including a plurality of illuminated panels, and a controller in communication with the golf ball launch monitor system and the plurality of illuminated panels, wherein the controller selectively controls the illumination of the plurality of panels to define one or more visual targets observable from the hitting bay and receives information from the golf ball launch monitor system such that, when a golf ball is hit from the hitting bay towards the playing area, the golf ball launch monitor system communicates data to the controller sufficient for the controller to identify a landing position of the golf ball with respect to the one or more visual targets.

A measurement system includes a first measurement unit configured to measure floor reaction forces of golfer's left and right legs, a second measurement unit that is attached to the upper body of a golfer and configured to measure an angular velocity of the golfer, and a processing unit. The processing unit calculates, based on measurement results of the first measurement unit and the second measurement unit, a first energy which is a kinetic energy of the golfer during a swing.

A vehicular exercise system includes an exercise monitoring apparatus configured to communicate with a vehicle including one or more internal structures including at least one seat and a steering wheel. The at least one exercise monitoring apparatus includes processing circuitry configured to detect one or more exercise activities performed at the one or more internal structures and actuate the vehicle based on the one or more detected exercise activities. The processing circuitry is further configured to monitor one or more physiological parameters of the one or more detected exercise activities, determine a recommendation regarding future exercise activities based on the one or more physiological parameters, and output one or more notifications corresponding to the one or more physiological parameters and the determined recommendation.

A squash training system includes a sport sensor. The sport sensor includes a sensing unit configured to detect a motion of a racquet and generate three-dimensional (3D) motion data associated with the motion. The sport sensor also includes a memory configured to store the 3D motion data and a communication interface configured to transmit the 3D motion data to a terminal device. The squash system also includes at least one processor configured to receive the 3D motion data from the sport sensor and determine, based on the 3D motion data, at least one characteristic associated with the motion. The processor is also configured to render a graphical representation of the characteristic on a display.

In a first aspect, a system for monitoring a swing is provided that includes (1) a swing measurement device adapted to couple to a swinging object and to output a signal indicative of a characteristic of the swinging object; (2) a wireless transmitter coupled to the swing measurement device and adapted to wirelessly transmit the signal output by the swing measurement device; and (3) a wireless device adapted to receive the wirelessly transmitted signal and to provide information regarding the swinging object based on the received signal. The wireless device is a cellular telephone or personal digital assistant (PDA). Numerous other aspects are provided.

A swing analyzing apparatus includes at least an angular velocity sensor, an impact detection section, an angular velocity information calculation section, and an impact state judgment section. The impact detection section detects the timing of impact in a swing of a sporting good. The angular velocity information calculation section calculates at least one of the amount of change in angular velocity with respect to a predetermined axis in a predetermined period after the impact timing and the greatest value of the angular velocity based on data outputted form the angular velocity sensor. The impact state judgment section judges the state of impact based on the result calculated by the angular velocity information calculation section.

Methods, systems and devices for linking devices to tracking devices are provided. One method includes scanning, by an activity tracking device, for a semi-unique identifier broadcasted by a device. The method connects the device with the activity tracking device after the semi-unique identifier is found to be of the device by the activity tracking device. The activity tracking device is configured to communicate with the device to obtain device identification (ID) of the device. The method then automatically links the device to the activity tracking device when the device ID of the device matches a copy of the device ID stored in the activity tracking device. In one example, the tracking devices operate as a master and the devices operate as a slave.

A device, method and system provide a wellness management process and/or an exercise management process for use with a smartphone or other mobile computing device. Various data about the user is obtained and used for determining and recommending an action or exercise to the user to improve the user's wellness/physique/health. The action determined can be based on: (1) current biometric and/or motion data about the user (from the sensors), and (2) current physical condition(s), such as health/medical information or condition about the user (from the user's personal information, e.g., health library or programmed into the smartphone). Specific information about the user is taken into consideration when recommending user action or exercise, such as the user's specific physical, health or medical conditions.