A method for tracking performance of player including determining global direction of magnetic field at first court and computing first court specific data; providing rotation for rotating apparatus about spin axis via player, wherein rotating apparatus comprising XYZ-magnetic field sensor; measuring plurality of magnetic field values as function of time when rotating apparatus is rotating about spin axis; computing magnetic field component of magnetic field in direction of local body co-ordinate of spin axis of rotating apparatus; determining direction of spin axis using computed magnetic field component of magnetic field and determined global direction of magnetic field; determining player specific data comprising angle of spin axis with respect to horizontal ground plane and angle of shot direction with respect to horizontal component of spin axis; and calibrating and storing first court specific data and player specific data to track performance of player at first court.

A method, a false start detection system, and a false start detection sensor for determining whether an athlete has performed a false start in an event. Force data is received representing the force exerted by at least one upper appendage of the athlete on a surface when in a starting position (S701). The force data is processed to determine an athlete start time (S702), and the athlete start time is compared to an event start time to determine whether a false start has occurred (S703).

A treadmill includes a frame. A running belt is coupled to the frame so that the running belt is adapted for rotation relative to the frame. At least one sensor is adapted for collecting parameter information regarding the experience of a user of the treadmill. The parameter information is selected from the group consisting of the user's heart rate, total expended calories, stride length, stride force, cadence, pace, distance, resistance level, incline level, carver count, carver cadence, step count, ground contact time, relative position within a race, and relative position on the treadmill. The treadmill also includes at least one light source that is adapted to selectively communicate information to an instructor relating to the parameter.

A treadmill with a safety warning function includes a miming unit, a driving unit, a detection unit and a control unit. The running unit includes a driving roller and a running belt provided for a runner to stand thereon. The detection unit includes a camera arranged at a predefined height range on top of the running belt for photographing images. The control unit determines a height of the runner based on the images photographed. The safety monitoring method for the treadmill includes obtaining an image above the running belt and determining whether the height of the runner is greater than the predefined height. By determining whether the height of the runner is greater than the predefined height, it is able to determine whether the driving roller can be driven by the driving unit to rotate, thereby preventing the hazard of accidental activation by a child of insufficient height.

A football device includes an outer skin and an inner bladder to be inflatable and substantially resemble and perform like an actual football. The football device includes a sensor unit that can sense various performance metrics and wirelessly communicate data to another device such as a mobile device. To maintain a feel and performance as close to an actual football as possible, a battery powering the sensor unit is wirelessly recharged.

Systems, methods, and media for a configurable training system are provided. The configurable training system can include a controller and one or more configurable training devices. The configurable training device can include a housing, a cover coupled to a front surface of the housing, a sensor located within the housing to detect an impact, an indicator located within the housing and configured to emit light, and communication circuitry coupled with the indicator and the sensor. The communication circuitry may be coupled with the controller. The configurable training system may be adapted to various athletic training equipment or other equipment for physical activity.

A workout music playback device for playing workout music during a workout with given workout parameters by arranging and assembling song segments of original musical recordings in accordance with workout parameters. The device has a media output manager configured to receive the workout parameters and prepare audio output information by arranging a sequence of song segments into an edited song recording. It has an instruction relay module configured to receive the audio output information, and transmit the workout audio output instructions. The device has a media output generator configured to receive the audio output instructions from the instruction relay module, retrieve and assemble the song recording data of the original musical recording from the memory in accordance with the audio output instructions, and transmit a data stream of workout music corresponding to the workout parameters.

A dry swim simulation system is described. A portion of the system includes a platform extending vertically from the base platform and a first and a second retractable pulley. Another portion of the system includes a first support assembly comprising a first movable cradle configured to receive thighs of the user and a second support assembly. The second support assembly includes a second movable cradle configured to receive a torso of the user, a computing device, and a headrest comprising an opening configured to receive a face of the user such that the user views the computing device. The computing device is configured to receive parameters associated with the user during use of the dry swim simulation system from numerous electrical and/or mechanical components. The computing device is configured to analyze the parameters and provide real-time feedback to the user to improve performance of swimming strokes.

A training device and a training method for reducing hypertonic are disclosed. The training device includes a base, a driving circuit, two pedals, a control circuit, and a switch circuit. The driving circuit is fixed on the base. Each of the two pedals is coupled to the base. The driving circuit drives each of the two pedals to swing repeatedly between a first position and a second position relative to the base. When the control circuit executes a training program, the control circuit actuates the driving circuit.

A rock climbing wall includes a support wall and a plurality of rock climbing holds attached to the support wall. The rock climbing wall also includes a sensing apparatus that determines that a climber traversing the rock climbing wall has contacted a first one of the plurality of rock climbing holds. In addition, the rock climbing wall includes a control device that, upon receipt of a signal from the sensing apparatus indicative of the climber contacting the first one of the plurality of rock climbing holds, causes at least a second one of the plurality of rock climbing holds to be indicated as an additional hold to be contacted as the climber traverses a climbing route along the wall.