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Joe Kinney is an American strongman, grip strength specialist and crush grip innovator from Bean Station, Tennessee. [1] [2] [3] [4] [5]In 1998, he became the first ...
A mass market, plastic-handled gripper A gripper being closed. Grippers, sometimes called hand grippers, are primarily used for testing and increasing the strength of the hands; this specific form of grip strength has been called crushing grip, [1] which has been defined as meaning the prime movers are the four fingers, rather than the thumb.
In sports, hand grip strength is a major factor in a player's strength, determining how easily a ball can be caught or how effectively equipment can be used. Hand grip strength is directly linked to hand-eye coordination: when a person is looking at the thing they are gripping, hand grip strength intensifies because of this synchronization. [13]
A gyroscopic wrist exerciser. Video showing the use - from starting the rotation with a 'shoestring' over various movements with the holding hand until stopping the rotor with the second hand. The demonstrated speeds are, in part, very high and not recommended for normal exercise due to the resulting high forces.
The basic exercise consists of holding a pair of Baoding balls in the palm of one hand, rotating them (switching the relative position of the two balls) while maintaining constant contact between them. Once this technique has been mastered, the rotation speed can be gradually increased until the balls separate in the hand.
A stress ball in the shape of a globe. A stress ball or hand exercise ball is a malleable toy, usually not more than 7 centimetres (2.8 in) in diameter. It is squeezed in the hand and manipulated by the fingers, ostensibly to relieve stress and muscle tension or to exercise the muscles of the hand.