| 摘要 |
Exercise bicycle including a unidirectional chain sprocket and two unidirectional gears 44 arranged on a composite shaft, and a pedalling mechanism 20. The gears are set in rotation by two levers 70, each by means of a toothed sector 50 and of a transmission 60 connected to the lever in a manner such that the lever can perform an oscillating and pivoting movement, in the manner of oars. The composite shaft drives an energy-absorbing wheel 80. <IMAGE>
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