| 摘要 |
A batting aid which is designed to improve a baseball player's batting swing and to strengthen his leading batting arm comprises an upper arm cuff attached to the upper portion of the leading arm of a person preparing to swing a bat, a wrist cuff attached to the wrist of the batter's arm, and an elastic strap connecting them. The wrist cuff has a thumb strap to hold the wrist cuff in place. The wrist cuff and the upper arm cuff are connected by an elastic strap such that, when the batter's leading arm is flexed the elastic strap is slack, and when the arm is extended, the elastic strap becomes taught and provides a resisting force against the further extension of the leading arm.
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