Arm flexion exercise machine

摘要

An arm flexion (arm curl) exercise machine which utilizes a frame- journaled rotating effort arm, which is mechanically linked to a frame- journaled rotating weight arm, which, together with the frame of the machine and the connecting link joining them, form a double-rocking- lever 4-bar linkage, which acts in conjunction wth the rotating weight arm to vary the resistive force applied to the operator's arm flexing muscles through body-machine contact with the rotating effort arm throughout the range of the exercise movement.