In a first aspect, a method for monitoring a golf swing is provided that includes coupling a mobile telephone to a golf club and employing the mobile telephone coupled to the golf club to monitor acceleration of the mobile telephone as the mobile telephone swings while a user swings the golf club, collect acceleration information based on the monitored acceleration of the mobile telephone as the mobile telephone swings, analyze the collected acceleration information to determine one or more characteristics of the golf swing based on the collected acceleration information, and output information regarding the one or more characteristics of the golf swing on the display of the mobile telephone. Numerous other aspects are provided.

A golf training aid is described that stabilizes a wrist and an elbow of a golfer during a golf swing. The golf training aid includes a flexible sleeve and an elongated rigid insert. The flexible sleeve is configured to receive the wrist and the elbow of the golfer. The elongated rigid insert is secured to the flexible sleeve. The flexible sleeve keeps the rigid insert in contact with the wrist and the elbow of the golfer so as to prevent pivoting of the wrist and pivoting of the elbow.

An apparatus, method, and system for measuring a golf club swing motion, especially a golf putting stroke, from the overhead view and enabling to provide in-situ athletic training and instruction along with analysis of the putting stroke by using augmented reality superimposed on the image of the actual golf club. The system comprises a portable apparatus, mobile device application interface, image processing algorithms and network servers. The portable apparatus includes a mini-camera and communication modules for capturing the video image of a putting stroke and transmitting the image via wireless, Wi-Fi, Hotspot, or Bluetooth to a designated electronic display device such as a tablet, mobile phone, or laptop. The portable apparatus is fixed to a fastening clip which fits easily onto a golf cap to provide the overhead view of the putting stroke and record the image from an actual golf course.

A golf practice tool is provided having a columnar box, wherein the columnar box is provided with a shoulder belt and the columnar box is carried on the back of the golf player. The columnar box has a substantially flat upper surface. A plurality of striped line patterns or striped patterns substantially parallel to a side surface, which touches a back of a person and is called a back touch side surface, of the columnar box are drawn on the upper surface. The degree of inclination of the upper body of the golf player when playing golf can be adjusted by using the striped line patterns or the striped patterns. On side surfaces other than the back touch side surface of the columnar box, a plurality of vertical striped line patterns or vertical striped patterns are drawn substantially at right angles to the bottom surface of the columnar box. The degree of rotation of the upper body at a golf swing can be adjusted by using the vertical striped line patterns or the vertical striped patterns.

A shoulder motion exercise device and method of use having a retainer, a connector, an extender, and a slider. When the user mimics a golf swing, the device aids in the stretching and exercise of at least a shoulder and a portion of the torso.

Posture training systems provide hands-free shoulder and back\spine alignment assistance for facilitating correct posture and alignment of the shoulders and spine of an athlete throughout swing or other physical rotational movements, and methods of their use. The posture training systems include vests that provide information during and throughout the rotational movement about spine-tilt angle relative to the ground, plane of the shoulders during torso rotation, perpendicularity between the spine and a line drawn between the shoulders, as well as departures from or maintenance of any of the initial parameters.

A system for correcting alignment of a golf club is provided. The golf club includes a shaft, a golf club head mounted on a first end of the shaft, a camera embedded in the golf club head. A display module is adapted to display at least a partial view of the camera. Substantial alignment of a face of the golf club head with a target location will be observable in the display as substantial alignment between the target location with an alignment guide. Misalignment of a face of the golf club head with the target location will be observable in the display as a misalignment between the target location with the alignment guide, for which a position of the golf club can be adjusted to bring the face of the golf club head into substantial alignment with the target location.

A golf hip-turn timing practice device according to the present disclosure includes: a fastening belt; a first retainer; a plurality of second retainers; and a hip-turn link stick that is fitted in the first retainer and the second retainers in the longitudinal direction of the fastening belt to be fixed at the position and is longer than the width of shoulders. The golf hip-turn timing practice device provides an advantage in that the golf hip-turn timing practice device enables correct swing timing practice by timing a hip-turn, which is a movement of a lower body, with the movements of the arms and hands of the upper body in golf swing. Further, the golf hip-turn timing practice device provides immediate feedback when the timing is wrong, is easily worn on the waist, and corrects a wrong swing by accurately showing the plane by hip-turn.

A sports equipment grip apparatus having a grip member having a side wall, a lengthwise opening disposed between a first end and a second end permitting insertion of a sports equipment item, the side wall being configured to snugly conform to the sports equipment item; a plurality of coplanar rings extending radially from the side wall, being equal in size and fitting onto a user's fingers; wherein the apparatus trains the user in holding and using a sports equipment item with a relaxed grip and in a suitable position, by forcing the user to place the sports equipment item near user's finger base into the grip member before gripping the sports equipment item, such that the sports equipment item is gripped primarily with user's fingers, and in the relaxed grip by providing a supplemental grip of the sports equipment item exercised by the grip member.

A sports rotation swing training system is provided that includes a harness assembly to be worn around the torso of the player that is used with a separate vertical upright structure. The harness assembly comprises a chest/waist band and a generally horizontally projecting stick protruding from the band side. The projecting stick is designed to engage with the separate upright structure upon the player’s execution of a swing to provide feedback (auditory, tactile, or electronic) related to the degree of rotation. The chest/waist band can be alternatively positioned by the user at the chest (to practice thoracic rotation) or at the waist (to practice pelvic rotation). In a preferable aspect of the invention, the angle of the projecting stick is adjustable downward from generally parallel to the ground.