A golf training aid comprising a flexible arm band adapted to releasably fasten, a flexible strip having a first end and a second end and at the first end and the second end a closed loop is formed, wherein at substantially the midpoint of the flexible strip is attached to the flexible arm band, a first band detachably attached to the flexible strip through the closed loop at the first end, a second band is detachably attached to the flexible strip through the closed loop at the second end, and a securing mechanism attached to the second end of the first band and the second end of the second end by the detachable connects, and the securing mechanism is designed to secure to a golfer's clothing.

A flotation component, such as for a pull buoy, can be sized and shaped to be placed between the legs of a swimmer. The flotation component can include one or more features to assist in maintaining the flotation component in place while the swimmer is swimming. A pull buoy including the flotation component also can include an internally routed strap that assists in fastening the flotation component to at least one leg. A pull buoy including the flotation component can include a waist portion having a lateral diameter that decreases from one end to the opposite end.

An exercise weight support device includes: a spool connected to a belt to suspend the device, the spool being rotatable to enable more or less of the belt to be wound therearound to change the device vertical position of the device; a ratchet wheel drivingly coupled to the spool to control rotation thereof; an outer frame having a cradle and/or a pair of hooks to support a bar of a free weight; a ratchet pawl connected to the outer frame at a fixed location relative thereto; and a trigger handle coupled to the spool to move the spool relative to the ratchet pawl between a non-operating position of the trigger handle causing the ratchet pawl and teeth of the ratchet wheel to engage, and an operating position of the trigger handle causing the ratchet pawl and the teeth of the ratchet wheel to disengage to control rotation of the spool.

A golf glove with a grip assist device. The golf glove has a glove fastening device for tightening the glove around the hand of the user inserted into the glove. An elastic strap is permanently connected to the golf glove adjacent to the glove fastening device. The elastic strap is wrapped around the user's hand and a golf club that is held in the user's hand and is for assisting the user in gripping the golf club. An elastic strap fastening device is connected to the elastic strap and operates to hold the elastic strap in position while the strap is wrapped around the user's hand and the golf club.

A golf training device and method indicates the proper position and/or motion of the golfer's trail wrist during the club downswing. The device may detect that desired DWLA is attained and provide real-time alerts of same. The device may provide positive feedback in the form of an auditory, tactile, visual and/or other signal.

An apparatus for hand tremor stabilization including a rotatable flywheel assembly mountable to a hand of a user. The rotatable flywheel assembly includes i) a flywheel having a flywheel mass, m, and a flywheel diameter, d, and ii) a prime mover adapted to rotate the flywheel at a rotational speed, r, about a flywheel rotation axis such that the rotatable flywheel assembly generates an angular momentum having a magnitude of between about 0.05 kgm2/s and about 0.30 kgm2/s.

A shock-absorbing device is applied in a ball/racket frame having a plurality of string holes allowing a string to pass, and includes: at least one or more outer tubular member, disposed at a periphery of the ball/racket frame and arranged between the string holes adjacently disposed, wherein two sides and an outer side of the outer tubular member are formed with an adhering surface and an outer tubular wall, and a bottom end of thereof is formed with an adhering part adhered at the periphery of the ball/racket frame; and an inner tubular member, disposed in the outer tubular member along an axial direction and an inner side thereof is formed with an inner tubular wall; accordingly, by providing interferences at different timings and bearing shock waves of a counter shock force generated while a ball being struck via the string, effects of absorbing shock and damping are achieved.

An aqueous adhesive for rubber of the present disclosure includes: a base agent containing rubber latex as a main component thereof; and an organic solvent that causes swelling of a rubber component in the rubber latex. An amount of the organic solvent in the aqueous adhesive for rubber is not less than 25% by mass and not greater than 60% by mass of a total amount of the base agent and the organic solvent. A boiling point of the organic solvent is preferably not higher than 140° C. A tennis ball of the present disclosure includes a hollow core made of a rubber material. The hollow core includes two hemispherical half cores. The two half cores are adhered to each other by using the aqueous adhesive for rubber.

Embodiments of wood-type club heads comprising one or more components are described herein. The wood-type club head comprises a first, metallic component, and a second, non-metallic component. The first component comprises the load bearing structure that forms the striking face, and portions of the crown, the heel, the toe, and the sole. The second component comprises a lightweight structure that wraps around the first component to form portions of the crown, the heel, the toe, and the sole. The first component comprises mass pads and receives removable weights to adjust the weight properties of the club head. The two-component design allows for additional discretionary mass redistribution to improve center of gravity location and moment of inertia.

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.