| 摘要 |
A sports training device is described for securing the wrists and arms of a player. It comprises three elongated members, the first two being centered and pivotally mounted on the third and spaced apart a distance slightly less than the player's forearms. Each of the first two members can rotate in substantially the same plane about one of two parallel axes perpendicular to the axis of the third member. One of the first two members has at its two ends means for securing it to the player's wrists; and the other has at its two ends means for securing it to the player's arms near the elbow. When a player's wrists and arms are secured by this device, he is essentially forced to stand sideways to hit the tennis ball. At the same time, since the training device allows the player to shift the position of his left wrist and arm longitudinally relative to his right wrist and arm by rotating the first two members relative to the third, the player is able to move his shoulders and upper body properly in swinging at the tennis ball.
|
