| 摘要 |
An exercise apparatus which comprises a track, a track carriage slidably disposed on the track, and a resistance system for providing unidirectional, selectively variable resistance to the track carriage. The track carriage is capable of sliding along the track in a first direction when a force is applied to the track carriage sufficient to overcome the resistance force of the resistance system, and whereby the track carriage is capable of sliding along the track in a direction opposite to the first direction when the applied force is diminished.
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