| 摘要 |
<p>Exercise devices which are arranged to replicate the feel and effect of exercising with free weights but providing resistance in two directions away from a null position are disclosed. One example of a device comprises a handle (21) which can be grasped by an exerciser and which is mounted on an articulated arm portion (2) which in turn is mounted to a frame (7). A weight (33) and pulley arrangement provides resistance to movement. A hydraulic arrangement comprising arm cylinders (92) and a transmitting cylinder (103) is provided for transmitting movement of the arm portion (2) to the weight (33). A first arm member (22) is pivotally mounted to allow pivotal movement about an axis. Pivotal movement about this axis in two directions away from a null position is resisted by the weight (33). The weight (33) also tends to urge the arm member (22) back towards the null position. The null position can be adjusted by moving a moveable block (75) relative to the frame (7).</p> |
