An indication is received from a user to rack or unrack a digital weight. A motor is signaled to apply or remove tension to a cable couple to the motor based at least in part on the indication. The actuator is connected to the cable and is physically arranged to deliver a force to the user. The motor selectively tensions a cable in accordance with an exercise program.

A golf putting game includes at least one putting green defining a putting surface and a plurality of putting cups disposed within the putting surface at a different location on the putting green. Each putting cup has an exterior housing and an interior core disposed within and removably attached to the exterior housing. The interior core is removable from the exterior housing with the putting cup disposed within the putting surface of the putting green. Each putting cup is illuminated by a different predetermined color and assigned a different predetermined number of base points corresponding to the predetermined color. A player score is determined from a number of putting strokes made by a player to putt a putting ball into the putting cup and the predetermined number of base points assigned to the putting cup.

An underwater propulsion device is disclosed comprising two sleeves for fitting around each of a user's lower legs, with each sleeve mounting a propulsion unit, and the sleeves being connectable by a bar between them during underwater operation of the device by the user.

The present disclosure is directed to a system for sensor-based objective determination. An example apparatus includes memory, instructions, and processor circuitry to execute the instructions to at least compare time-synchronization data between a first signal and a second signal, the first and second signals received in response to a detected contact between a first participant and a second participant in an event, wherein the first signal is received from a first sensor operably coupled to the first participant, the first sensor to measure at least one first physical parameter of the first participant while the first participant is engaged in the event, and wherein the second signal is received from a second sensor operably coupled to the second participant, the second sensor to measure at least one second physical parameter of the second participant while the second participant is engaged in the event, and determine, based on (a) the time-synchronization data, (b) the at least one first physical parameter, and (c) the at least one second physical parameter, whether the detected contact between the first participant and the second participant exceeds one or more thresholds corresponding to a rules-based infraction associated with the event.

The disclosure is directed to systems and methods for providing a user with key performance indicators of a basketball player relating to accuracy, precision and improvement. Specifically, the disclosure is directed to a system of sensors coupled to a basketball backboard adapted to provide an accurate tracking of a shot in a given three-dimensional space and extract features manipulated to yield key performance indicators based on establishing whether, how often and where the ball center passes the rim plane at a sub-cm resolution over a period of no more than 200 msec.

An example method for providing enhanced event visualizations based on location data includes receiving, by a visualization processor, location data and sensor data for a plurality of participants; determining an impact indication for two or more participants of the plurality of participants based at least in part on the location data and sensor data; determining, by the visualization processor, a location of impact based on the impact indication and the location data and sensor data for the two or more participants; and generating an impact visualization interface configured to visually indicate impact data associated with the impact indication proximate the impact location.

A brain injury reduction system provides a protective measure that temporarily or decreases venous drainage out of the intracranial compartment during or immediately before and during a sudden change in acceleration of an individual's head. Specifically, a wearable helmet or other wearable structure of the brain injury reduction system detects an impending collision and determines whether a protective measure is needed. If so, one or more actuation devices provides the protective measure to reduce venous drainage through one or both of the internal jugular veins or paravertebral venous plexus. A first actuation device stimulates a gag reflex or valsalva-like maneuver to reduce venous drainage through the paravertebral venous plexus. A second actuation device can physically compress the internal jugular veins. Thus, the brain injury reduction system minimizes the detrimental impact that may occur due to the sudden change in acceleration of the individual's head.

A sports and performance media positional detection system, comprising: at least two elements, with at least one element involved in the sporting activity; a power source; and machine-to-machine communication, which are collectively arranged such that if any two or more elements interact, their electromagnetic properties can be detected thus allowing the position of the interacting elements to be communicated to a decision maker. The system can be applied to at least one stationary element, which can be the playing surface, lines defining the boundaries, or a set of goalposts; and at least one moving element, which could be a ball, footwear, or the participants themselves. The system can also be applied to performance media capture.

A weight training auxiliary device for adjusting a weight training load of training equipment includes a plurality of weights that generate a load, a load transmission mechanism configured to transmit the load of the weights to the training equipment, and a weight attaching/detaching mechanism configured to attach and detach the weights. At least one of the weights has an electromagnet or a permanent electromagnet built in. The weight attaching/detaching mechanism includes a conduction relay configured to control supply of power to the electromagnet or the permanent electromagnet so that the weight training load is adjusted by attaching or detaching the at least one of the weights.

A wobble board includes a platform, a base having a generally flat bottom surface, and at least one compressible member positioned intermediate the platform and the base such that the platform is pivotable with respect to the base.