| 摘要 |
A portable exercise device for releasable securement to the vertical edge of a door or other vertically extending structure. The device comprises a pedal assembly, comprising an elongated axle from which a diametrically opposed pair of arms extend, with each arm having a respective pedal mounted thereon. The pedal assembly is arranged to be rotated about the longitudinal axis of the axle by the application of force to the pedals. The axle is mounted within a holder having a clamping bracket. The holder includes a tension bar and a frictional material split sleeve disposed about the axle to frictionally engage, the peripheral surface thereof. The tension bar is adjustable to vary the frictional engagement between the sleeve and the axle so that the user can select a desired amount of pedalling resistance the device will provide. Each pedal includes finger notches to enable the user to rotate the pedals by hand. Stirrups are provided to ensure that the user's feet, when rotating the pedals, do not slip off the pedals.
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