| 摘要 |
An exercise device of the weight lifting type wherein the force or load conventionally supplied by weights is effectively simulated by fluid means such as a hydraulic assembly. One or more hydraulic assemblies act upon a reaction bar to tend to move it one direction. The exercising person engages the reaction bar and exerts force upon it in the direction opposite to the force exerted by the hydraulic assemblies. Force is exerted in a direction opposite to the direction of the force exerted by the hydraulic assembly in both in an extension and retraction phase of the exerciser's routine.
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