| 摘要 |
<p>Muscle-development apparatus, characterised in that it is composed of a horizontal board on which are fitted, in a retractable or removable manner, blocks for vertical resting of the feet, blocks for horizontal resting of the feet, a transverse horizontal roller for height-adjustable support of the legs and of the trunk, at least one flexible loop fastened by a traction (draw) spring, and harnesses for fastening the feet onto the said blocks. <IMAGE></p> |
