| 摘要 |
<p>A longitudinal frame (104) supports a seat (110) whose longitudinal position on the frame is adjustable. A pair of footbeams (106, 108) are mounted on either side of the frame. The footbeams independently pivot on the frame so that the user can operate them in an alternating reciprocating fashion. Pivotal movement of the footbeams by the user is resisted, thereby requiring the user to expend energy in operating the device. The footbeams are preferably interconnected so that their respective movements are coordinated. In alternative embodiments, the footbeams pivot about a point just below the seat. The seat can also be adapted to recline.</p> |
