| 摘要 |
A variable resistance exercising device is described for executing isometric, isotonic and isokinetic exercises. The device includes a unitary, open-ended mandrel or bar which is shaped to define at least one shaft which is adapted to receive several turns of rope thereon, an open support loop for the rope situated near one end of the shaft, and an open guide loop at the other end of the shaft for holding the rope in proper engagement with the shaft. By virtue of the mandrel's open-ended construction, the rope may be easily engaged or disengaged from the device, and the resistance provided by the device may be changed quickly.
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