A rotation mechanism of a wrist exerciser is provided. The rotation mechanism includes a sleeve ring, a spinning mass, and a driving assembly. The sleeve ring is rotatable along an annular groove. The sleeve ring includes an annular body and a mount component. The annular body has a first mount portion and a first insertion hole respectively located at two opposite sides of the annular body. The mount component has a second mount portion and a second insertion hole. The second mount portion of the mount component is engaged with the first mount portion. Two shaft portions of the spinning mass are respectively and rotatably located in the first insertion hole and the second insertion hole, allowing the spinning mass to be rotatable. The driving assembly includes a stator fixed to the mount component and a rotor mounted on the spinning mass.

A momentum measurement device is disclosed. The momentum measurement device includes a measurement sensor including a printed circuit board and an acceleration sensor, a gyroscope sensor, a communication element, and a processor connected to the printed circuit board, and a cover configured to surround a first surface and a side surface of the measurement sensor.

A sports ball system for calculating movement characteristics has a sports ball. The sports ball monitors movement characteristics of the sports ball. A plurality of wearable devices is worn by a batter whom the sports ball is being thrown towards. At least one of the plurality of wearable devices receiving and displaying data transmitted by the sports ball and a remaining plurality of wearable devices recording data relating to movement of the batter.

Power measurement device for a bicycle trainer, which device is built as a unitary relocatable device comprising an acceleration or velocity sensor, a microcontroller and a memory, wherein the device is equipped with or connectable to a power source, preferably a battery, and wherein the device is equipped with a communication facility to enable the device to wirelessly or through wires communicate with an external application device.

A golf launch monitor is configured to determine a flight characteristic of a golf ball. The golf launch monitor includes two low-speed cameras, a trigger device, and a processor. The trigger device is configured to detect a golf swing. The processor is configured to instruct, upon the trigger device detecting said golf swing, the first camera to capture the first ball image; instruct the second camera to capture the second ball image after a time interval, wherein the time interval is less than the first frame rate and the second frame rate; and determine, based at least in part on the first ball image and the second ball image, the flight characteristic of the golf ball.

A golf ball comprising an electrical component is disclosed herein. The electrical component comprises an integrated circuit having a gyroscope, a magnetometer, and a BLUETOOTH low energy (BTLE) radio, and at least one battery. A body is composed of an epoxy material, and the body encompasses the electrical component.

A golf ball comprising an integrated circuit is disclosed herein. The integrated circuit comprises a gyroscope, a magnetometer, and a BLUETOOTH low energy (BTLE) radio, and at least one battery. A body is composed of an epoxy material, and the body encompasses the integrated circuit. A wound core layer is disposed over the body.

This disclosure relates to systems, media, and methods for quantifying and monitoring exercise parameters and/or motion parameters, including performing data acquisition, analysis, and providing scientifically valid, clinically relevant, and/or actionable diagnostic feedback. Embodiments may be related to systems, devices, methods, and computer-readable media for providing baseline-adjusted real-time feedback to a user. Embodiments may include determining a type of activity for the user. Embodiment may include receiving data from the one or more motion sensors indicating a time-dependent series of three axis acceleration data and three-axis orientation data. Embodiments additionally may include providing a graphical user interface with a real-time representation of the received data. The real-time representation may include a scaled representation of at least one dimension of the time-dependent series of three axis acceleration data and three-axis orientation data for at least one of the one or more motion sensors based on the updated baseline adjustment.

The present disclosure relates to systems and methods for elastic delivery, processing, and storage for wearable devices based on system resources. For example, a wearable apparatus may have at least one battery; at least one sensor configured to measure at least one property associated with a user of the wearable apparatus; at least one memory storing measurements from the at least one sensor and instructions; at least one transmitter configured to send data to a device remote from the wearable apparatus; and at least one processor configured to execute the instructions to: receive, from the at least one battery, an indicator of a charge; and based on the received indicator, sending a command to the at least one sensor to operate in a low-power mode or a high-power mode, the low-power mode having. a lower sampling rate than the high-power mode.

Golf balls including one or more layers having at least one radar detectable mark disposed on the surface thereof are provided.