| 摘要 |
A physical exercise apparatus for performing a wide range of exercises for the development of wide range of human skeletal muscles includes a weight means that is suspended by a line from a fixed support, and a tug line extends laterally therefrom to end portions that are gripped by the subject performing the exercises. The weight means in its gravity neutral position has a stop, and is uniquely suspended when out of that position so that the mass is stable and so that removable weights forming a part of such mass will not fall off due to inertia of motion. The support line is adjustable in effective length to adapt the apparatus to various sizes of subject and to various exercises and likewise to alter the resistance curve produced by this apparatus. Lateral force applied to the tug line in a direction away from the apparatus, produces an ever increasing isotonic resistance which gradually merges into a quasi-isometric condition at the limit of the capability of muscular contraction.
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