| 摘要 |
An abdominal exercise apparatus having a seat attached to a frame, a swing bar rotatably attached to the frame about a swing bar axis, a back rest rotatably attached to the swing bar about a back rest axis which is substantially perpendicular to the swing bar axis, and a handle bar rotatably attached to the swing bar about a handle bar axis which is substantially parallel to the back rest axis; and a method for performing an abdominal exercise includes sitting on the seat, laying one's back against the back rest and gripping the handle bar while twisting one's torso about one's hips to cause the swing bar to rotate relative to the frame about the swing bar axis and rotating the handle bar about the back rest axis to cause a rotation of the back rest about the back rest axis. |
