Training equipment includes a hollow shaft having a sidewall defining an internal cavity and at least one polymer material filling at least a portion of the internal cavity. The polymer material may fill the entire internal cavity of the hollow shaft. The polymer material may be a visco-elastic polymer material or polyurethane. A spacer or a filler may fill at least a portion of the internal cavity. A method of making weighted training equipment with a hollow shaft having a sidewall defining an internal cavity may include injecting a curable composition into at least a portion of the internal cavity. The method may further include curing the curable composition into a polymer material.

A handle for sport equipment comprises a tubular body (7) which extends along a longitudinal axis (L) and has an outer peripheral surface (8) adapted to be grasped by a user and shaped with a plurality of longitudinal faces (9) placed side by side in correspondence of edges (10) adapted to facilitate the positioning of the finger joints of the gripping hand by the user. The edges (10) are arranged along at least one pair of helical or spiral paths that develop around said longitudinal axis (L) with mutually opposite sign to subdivide each of said longitudinal faces (9) into a plurality of areas or flat surfaces (11) sized to accommodate a corresponding phalanx of the gripping hand of the user, each of said areas or flat surfaces (11) being perimetrically delimited by at least one pair of edges (10, 10) of each of the helical or spiral paths.

A handle for sport equipment comprises a tubular body (7) which extends along a longitudinal axis (L) and has an outer peripheral surface (8) adapted to be grasped by a user and shaped with a plurality of longitudinal faces (9) placed side by side in correspondence of edges (10) adapted to facilitate the positioning of the finger joints of the gripping hand by the user. The edges (10) are arranged along at least one pair of helical or spiral paths that develop around said longitudinal axis (L) with mutually opposite sign to subdivide each of said longitudinal faces (9) into a plurality of areas or flat surfaces (11) sized to accommodate a corresponding phalanx of the gripping hand of the user, each of said areas or flat surfaces (11) being perimetrically delimited by at least one pair of edges (10, 10) of each of the helical or spiral paths.

A retrieval apparatus attaches to the handle of a paddle, thereby enabling the user to retrieve pickleballs, with minimal bending. The apparatus comprises a hook and a base. The base has a first half and a second half. The hook has a stem in an L-shape when the apparatus is mounted on the paddle and the paddle is held upright, a curved body, and an end-point. The end-point is angled at least 30 degrees relative to the horizontal plane of the stem. The second half of the base includes various attachment mechanisms for securing the apparatus to a paddle handle, which include: an affixed channel with a snapping mechanism, a breathable slit, an adhesive, or a form-fitting sleeve.

Structures with racket performance varied according to the configurations of cylindrical parts can be easily used. A grommet includes a cylindrical part which is mounted pierced through a through hole formed in a frame of a racket and through which a string passes. The string is extended in a tensioned state on the frame so as to form front and back faces as hitting faces. The cylindrical part includes a first formation section forming both sides of a central axis position of the cylindrical part and a second formation section rotationally shifted with reference to the central axis position by 90 degrees relative to the first formation section and forming both sides of the central axis position. One of the first and second formation sections is disposed on both sides in a front/back direction. The first and second formation sections each have a different rigidity.

The disclosure provides a badminton net rack, comprising a base, has an grounding side and a mounting side opposite to each other, the base comprises two seat bodies, a support rod connecting the two seat bodies, and a connector spanning the support rod, the connector comprises a first stuck part and a second stuck part, the first stuck part is used for stuck badminton racket; two telescopic rods, can be switched between an inverted trapezoidal state and a stuck state, in the inverted trapezoidal state, the two telescopic rods are respectively connected to the two seat bodies to form an inverted trapezoidal structure for installing a ball net, in the stuck state, the two telescopic rods are respectively stuck to the two second stuck parts of the connector. The above-mentioned badminton net rack has various functions, is more portable and has better stability.