Abdominal exercise machine and methods

摘要: A method and apparatus for exercising the abdominal muscles where exerciser is seated legs are spread apart held in that position during exercise which accomplished by bending upper torso forwardly rearwardly through exertion of against a resistance offered weight stack. The machine includes movement arm having pad engageable chest as moves to perform positive work negative work. two parts one mounted other part means spring mechanism so may be moved raised allow easy entrance exit from machine. cam fixed connected stack pin an actuating lever located below also provided with counterweight balancing about its horizontal pivot axis.