| 摘要 |
A training apparatus comprising a framework, two platforms, one end of each platform being pivotally connected to the framework, the platforms being substantially parallel to one another and being pivoted at adjacent ends, a supporting member, adjustable in length, being located between the substantially parallel platforms and being pivotally connected at one end to the framework, a crossbar being detachably fitted at the other end of the supporting member and one or more force-transmitting or tractive means for retaining the supporting member in different desired angular positions and/or movably interconnecting the two platforms and/or connecting through the crossbar to a displaceable device, when the training apparatus is in use.
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