Aspects of the invention are directed to golf club having a crown, a sole, a face, and a primary alignment feature hard tooled into the golf club head. In some embodiments the golf club has a primary alignment feature comprising a line delineating a transition between at least a portion of the crown having an area of contrasting shade or color with a shade or color of the face. The primary alignment feature is hard tooled into the golf club head with the face of the golf club body.

A limb motion measurement device for swimming training includes a sense glove and a sense shoe able to measure and collect the states of moving hands and feet of a swimmer in a training practice, including strength, displacement, velocity, bearing angle, number of times, frequency and time parameters, and to generate a serial of limb motion data of arm stroking and leg kicking motions. These organized and quantified limb motion data can be transmitted outwards to an external computer for the swimmer to study and to produce useful information of more efficient movements and tempos of swimming techniques. Accordingly, the limb motion measurement device for swimming training can be applied to improve swimming techniques in a scientific way.

An apparatus for use in assessing strength of at least one knee flexor muscle of a subject, the apparatus including a support, two securing members, each securing member securing a respective lower leg of the subject in a position that in use is substantially fixed relative to the support and at least one sensor, which in use senses a force indicative of the strength of the at least one knee flexor muscle in at least one leg of the subject while the subject performs an eccentric contraction of the at least one knee flexor muscle.

A method includes receiving motion data of a user in an environment with respect to a plurality of instances of a first action by the user, determining a kinematic movement based on receiving the motion data, analyzing the kinematic movement using a neural network, obtaining a plurality of outcome types with respect to the first action of the user, correlating the kinematic movement with the at least one indication of the outcome type with respect to the first action, classifying an outcome of the first action as at least one of the plurality of outcome types, determining which of the kinematic movements of the user result in the at least one of the plurality of outcome types, and providing instructions to the user to alter the determined kinematic movements of the user that result in the at least one of the plurality of outcome types.

According to an augmented reality based interactive sports device using a LiDAR sensor proposed in the present invention, it is possible to allow enjoying sports indoors only with the user's body without requiring a user to wear a separate object or device by projecting an image for sports content on the floor and tracking a user motion of the sports content using the LiDAR sensor to control the interaction between the sports content and the user, allow using the floor surface efficiently due to wide range of motion tracking, and allow quickly and accurately tracking a motion of each user by tracking a user motion using two LiDAR sensors even when multiple users are using sports content at the same time.

Systems and methods are described for providing coaching, training, or equipment specification information to individual golfers based on data generated during their individual golf swings. Additionally, data hubs are described that provide information and services to individuals based on data collected for a community of multiple golfers. Such community data hub systems and methods may provide one or more of the following: (a) storage of scoring data, swing data, ball flight data, and/or equipment data for multiple golfers; (b) at least some level of individual access to the stored data for the community; and/or (c) electronic interaction between golfers within the community.

The present invention relates to a three-dimensional target system for ball game sports and, more specifically, to a three-dimensional target system for ball game sports in which a target, suspended in midair by using a drone or a sphere, is hit. A three-dimensional hitting system using ball game sports, of the present invention has an object to be hit disposed in reality rather than in an image, thereby enabling a direct experience of a hitting sense or hitting an object against a target, such that a game can become more fun. In addition, the present invention have a drone, which is applied thereto and can be flight-controlled in midair so as to allow the object to be hit to move to various positions and return to an original position thereof, thereby enabling a user to experience a new type of game and the use of drones to increase.

An exercise weight unit adapted to be handheld and palm-centered comprising a body and a feature at an end of the body configured to create a slight inward torque when the weight unit is held in a hand of a user during physical sports training, wherein the feature is one of a hook shape, a mushroom shape and a fin shape.

A multipurpose ball handling system including at least one projector, at least one motion sensor, and a controller. The projector projects one or more images on a surface. The one or more images simulating an environment for a ball handling activity. The one or more images are projected onto a surface where a user can practice one or more ball handling drills. The motion sensor includes a laser. The laser points at the projected one or more images and the motion sensor sensing when a ball crosses the laser's path. The motion sensor activates a counter to start counting how many times the ball crosses the laser's path. The sound indicator includes a sound generator. The sound indicator activates a sound output from the sound generator when the ball crosses the laser's path. The controller provides one or more metrics to the user relating to the user's performance of the one or more ball handling drills.

An evaluation method for evaluating a swing characteristic of a subject with respect to a flying and thus coming object, includes: calculating swing information corresponding to a motion characteristic of the object based on sensor data detected by at least one of a first sensor attached to a ball hitting tool or a back of a hand of the subject and a second sensor attached to a waist of the subject when the subject swings the ball hitting tool with respect to the object; classifying a plurality of pieces of such swing information into a plurality of groups based on the motion characteristic of the object; for each of the plurality of groups, extracting representative swing information in the group based on one or more pieces of swing information belonging to the group; and evaluating a swing characteristic of the subject based on the representative swing information of each group.