A method, computer system, and computer program product for sport training on an augmented reality device or a virtual reality device is provided. The embodiment may include capturing a plurality of user movement data using one or more sensors. The embodiment may also include measuring a user body and eye gaze position based on the plurality of captured user movement data. The embodiment may further include calculating a body position difference by comparing the measured user body and eye gaze position with an expert-specified body position sequence. The embodiment may also include determining a body position quality threshold is not satisfied based on the calculated body position difference. The embodiment may further include generating an instruction based on the compared calculated body position difference.

A training apparatus and method of use for guiding and improving the forehand, backhand and other strokes of a table tennis player by forcing the hand travel in the correct trajectory to strike the ball. The apparatus includes a waist and a chest belt, or a wide belt, to position a vertical rigid rod support to which the training guide is mounted. The training apparatus includes a plate that can be adjusted via a universal joint. There are two universal joints between the plate and the vertical rod support strapped to the player's torso. The position, orientation and the angle of the plate can be adjusted by the player via the two universal joints as required. The training apparatus improves the paddle stroke trajectory by guiding the hand such that the ball is returned to the opposing player bouncing off the table.

A method of operating an electronic basketball scoreboard apparatus is disclosed. The method includes receiving a game parameter; operating a basketball game based upon the received game parameter; receiving a first indication of a ball passing through a first basketball hoop; receiving a second indication of a ball passing through a second basketball hoop; determining a first score of the basketball game based on the first indication from the first score sensor; determining a second score of the basketball game based on the second indication from the second score sensor; recording video of the basketball game; transmitting the recorded video; and transmitting the first score and the second score.

An apparatus having a control circuit including a computer processor and a computer memory configured with computer software. The control circuit causes a first test assembly to conduct an initial test of the air pressure within an inner chamber of a first tennis ball; and if the control circuit determines that the air pressure is below a threshold, a pressurization process increases the air pressure inside the inner chamber of the first tennis ball by piercing the outer skin of the first tennis ball with a needle, until a tip of the needle is in the inner chamber, and a first opening, plugged by the needle, is formed in the outer skin of the first tennis ball. The needle tip is thereafter withdrawn from the inner chamber of the first tennis ball, leaving the first opening unplugged and sealant is applied to the first opening to close the first opening.

A table-tennis training apparatus for training a player to apply spin to a table-tennis ball when using a racket to hit the ball. The table-tennis training apparatus has a ball holder for rotatably holding a table-tennis ball. When the ball thereon is hit by a racket, the ball holder pivots about an axis and an elastic structure coupled to the ball holder dampens the speed of the ball holder to prolong the contact time between the racket and the ball and consequently help the player to more clearly experience the feeling of applying spin to the ball and thus facilitate the player's training of applying spins to the ball.

A method can include providing an object having a size smaller than a size of a known regulation object, projecting the object, via a delivery device, toward a trainee, and training the trainee to follow the object. A method can include determining a game parameter of a game trajectory of a sports object that was projected along the game trajectory in a real-time sports event, and based on the game parameters, adapting a delivery device to deliver a training object along a training trajectory that mimics at least a portion of the game trajectory, with the training object being smaller than the sports object.

A method can include providing an object having a size smaller than a size of a known regulation object, projecting the object, via a delivery device, toward a trainee, and training the trainee to follow the object. A method can include determining a game parameter of a game trajectory of a sports object that was projected along the game trajectory in a real-time sports event, and based on the game parameters, adapting a delivery device to deliver a training object along a training trajectory that mimics at least a portion of the game trajectory, with the training object being smaller than the sports object.

A method can include projecting an object toward an impact device along a trajectory, receiving the object at a target zone of the impact device, a trainee striking the impact device at an impact zone with a sports tool, and scoring a performance score of the trainee to impact the impact zone at an appropriate time compared to an arrival time of the object at the target zone. A method can include projecting an object toward a target along a trajectory, receiving the object at an actual arrival position at the target, wherein the actual arrival position is either inside a target zone or outside the target zone, and where a trainee is configured to send an indication when the trainee expects the object to arrive inside the target zone, comparing the indication to the actual arrival position, and determining a performance score based on the comparing.

Ball return devices may include a body having a front surface configured to return a ball incident thereon and a back surface. The body may be configured to be positioned at an angle to, and coincident with, an underlying surface, the angle between the ground surface and the body being variable. The ball return devices may also include an attachment mechanism coupled to the body and adapted to attach the body to an external anchoring mechanism.

A pneumatic ball launcher includes a tube, a ball pathway unit, a push unit, a holding unit, an airway unit and a pneumatic unit. The ball pathway unit is used for connecting one end of the tube and wrapping part of a ball channel of the tube. The push unit includes a push bar, a slide base, a first driver and a second driver. The holding unit, detachably connected with the push unit, is used for holding the ball pushed by the push bar. The airway unit is connected with the holding unit. The pneumatic unit includes a valve mechanism, a pneumatic cylinder and a gas tank. When the valve mechanism opens to allow the gas tank to discharge into the holding unit via the airway unit, the ball held by the holding unit would be ejected out of the tube.