| 摘要 |
<p>An apparatus for exercising the back and abdominal muscles, including an elongated beam and at least two spaced devices for transferring forces between the beam and its user. The preferred embodiment includes a lower crossbar for transmitting force from the beam to the user's shins or calves and a pad for transmitting force from the beam to the user's back or stomach. It also includes an upper crossbar and shoulder straps for transmitting force from the user's shoulders to the beam. An alternate embodiment includes an arcuate, laminated beam member in which the flexibility in bending is adjustable. It also includes a lower crossbar attachable to the user's ankles by means of a pair of ankle straps and an upper crossbar attachable to the shoulders with a pair of shoulder straps. When the alternate embodiment is in use, the central portion of the beam, which is preferably padded, contacts the user's back or stomach, transmitting force thereto.</p> |
