An Internet of Thing (IoT) device includes a camera coupled to a processor; and a wireless transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.

A hand-held exercise device comprises a frame, a handle attached to the frame, a spool element pivotally mounted to the frame, a pull-cord movable between a wound configuration in which the pull-cord is wound around the spool element and an unwound configuration in which the pull-cord is unwound from the spool element, a resistance element pivotally mounted to the frame, a transmission that couples the pull-cord to the resistance element such that pulling the pull-cord from the device causes the resistance element to rotate, and a damping means that acts to slow the rotation of the resistance element. The device provides a compact and lightweight form of exercise equipment that is easy to carry and easy to store. The device can be used with various fixtures, and also with a second handle fixed to the pull-cord, to allow the user to perform a wide range of exercises. Preferably the exercise device transmits exercise data to an external device that provides feedback and guidance to the user. A resistance mechanism for exercise apparatus allows a pull-cord to be coupled to a resistance element such that pulling the pull-cord from the mechanism causes the resistance element to rotate. A drive element is driven by a frictional force between the drive element and the pull-cord. The resistance element is coupled to the drive element by a transmission.

Apparatus, systems, and methods are provided for measuring and analyzing movements of a body and for communicating information related to such body movements over a network. In certain embodiments, a system gathers biometric and biomechanical data relating to positions, orientations, and movements of various body parts of a user performed during sports activities, physical rehabilitation, or military or law enforcement activities. The biometric and biomechanical data can be communicated to a local and/or remote interface, which uses digital performance assessment tools to provide a performance evaluation to the user. The performance evaluation may include a graphical representation (e.g., a video), statistical information, and/or a comparison to another user and/or instructor. In some embodiments, the biometric and biomechanical data is communicated wirelessly to one or more devices including a processor, display, and/or data storage medium for further analysis, archiving, and data mining. In some embodiments, the device includes a cellular telephone.

A training system includes a riding plate, a load sensor, a first center of gravity calculation unit, an image-capturing unit, a second center of gravity estimation unit, and a determination unit. The load sensor detects a load that the riding plate receives from a trainee. The first center of gravity calculation unit calculates a first center of gravity, which is a center of gravity of a load, based on the load detected by the load sensor. The image-capturing unit acquires image data of an image including a posture of the trainee. The second center of gravity estimation unit estimates a second center of gravity, which is a centroid position of the trainee, based on the image data. The determination unit determines that an alert to the trainee should be output based on a difference between the first center of gravity and the second center of gravity.

A golf ball with embedded electronics to allow proximity to be tracked and to monitor golfer performance is disclosed. The golf ball comprises a processor connected to an accelerometer, communications circuitry, a spin detector, and memory, wherein the processor stores accelerometer data from the accelerometer and rotation data regarding rotation of the spin detector in the memory. The processor converts the data regarding the rotation of the spin detector into a rotation speed and a rotation direction, said rotation speed determined by a frequency of the data, and said rotation direction determined by a magnitude of the data. The communications circuitry is configured to communicate the accelerometer data, the rotation direction, and the rotation speed to a central interrogator for analysis of a golfer's performance.

A device for upper-limb rehabilitation, which assists a user in exercising the arm for rehabilitation, has a connector, a placing unit movably connected to the connector, and a driving unit configured to move the connector, wherein when a user places the arm on the placing unit and moves the placing unit, the driving unit is operated to move the connector along the placing unit, so as to enlarge a work space in which the user is capable of moving the arm.

A weight training apparatus includes a telescoping pivot arm comprised of a concentric arrangement of an outer tube and an inner tube and configured to pivot about an axis and receive a weight at a predetermined position. The weight training apparatus further includes an actuator attached to the telescoping pivot arm and configured to cause relative motion between the inner tube and the outer tube to change a length between the predetermined position and the axis. The weight training apparatus further includes a sensor configured to output a signal indicative of an angular position of the telescoping pivot arm about the axis and a controller programmed to operate the actuator to cause the length to change based on the signal to achieve a target resistance profile.

An exercise device includes a frame and an exercise deck. The exercise deck includes a platform, a first pulley connected to a front portion of the platform, a second pulley connected to a rear portion of the platform, and a tread belt surrounding the first pulley and the second pulley. The exercise device also includes a motor in mechanical communication with at least one of the first pulley and the second pulley to drive the tread belt and an energy efficiency indicator that actives in response to determining that a power load needed to operate the exercise device is below a predetermined energy efficient threshold during a performance of an exercise.

A treadmill includes an exercise deck. The exercise deck includes a platform, a first pulley attached to the platform in a front portion, a second pulley attached to the platform in a second portion, a tread belt surrounding the first pulley and the second pulley, and a pacing mechanism incorporated into the platform.

An Internet of Thing (IoT) device includes a sensor coupled to a processor; and a transceiver coupled to the processor. Blockchain smart contracts can be used with the device to facilitate secure operation.