| 摘要 |
<p>The apparatus comprises a rail 12 having a knee pad 14 at one end and a slide 16 having at least one handle 20 along the rail (12). In use, a person 32 kneels on the pad 14, grasps the slide 16 and moves it backwards and forwards along the rail 12 between an initial position near the pad 14 and an end position defined by a movable stop 22. <IMAGE></p> |
