초록 ▼

An apparatus for abdominal exercise comprises a pair of laterally spaced u-shaped support rails for rocking back and forth on a surface. A pair of arm rests are each connected to the inside u-shape portion of one of the support rails and extend rearwardly from the contact point to the surface to rec

An apparatus for abdominal exercise comprises a pair of laterally spaced u-shaped support rails for rocking back and forth on a surface. A pair of arm rests are each connected to the inside u-shape portion of one of the support rails and extend rearwardly from the contact point to the surface to receive an elbow of a person disposed between said rails in a supine position. A first connecting portion connects the support rails above the contact point to the surface. A second connecting portion connects the support rails behind the contact point to the surface. A plunger is connected to said first connecting portion whereby a person disposed supinely on said support surface and between said support rails and with one of the hands or arms of the person engaging said first connecting portion is able to conduct a curling exercise to exercise the abdominal muscles of the person while rocking said device, and wherein said plunger is positioned to engage a user's abdomen to provide a kinetic and isometric force.

대표청구항 ▼

What is claimed is: 1. A plunger for providing kinetic pressure on a person's body part on a crunch exercise device, the crunch exercise device having a crossbar, comprising:a first clamp for providing attachability of the plunger to the crossbar, the first clamp further providing for adjustability

What is claimed is: 1. A plunger for providing kinetic pressure on a person's body part on a crunch exercise device, the crunch exercise device having a crossbar, comprising:a first clamp for providing attachability of the plunger to the crossbar, the first clamp further providing for adjustability of the angle of rotation of the plunger on the crossbar, and thereby providing for selectability of the body part on which kinetic pressure is provided by the plunger; anda slide;a second clamp for providing vertical adjustability of the plunger with respect to the crossbar; andwherein the plunger comprises an adjustable resistance plunger.