| 摘要 |
<p>An exercising device comprising first and second members (3, 14) which can be moved in relation to each other from an at rest position against the action of resilient arms (1, 2, 11, 12) to provide an exercising movement, and including means, e.g. spacers (20, 28), for adjusting, at the at rest position, the distance between the members (3, 14) without adjusting the pressure required to move the first and second members against the action of the resilient arms. </p> |
