A unique abdominal bench with a pivoting torso section has a number of pivots,
rods, and levers that allow the fixed seat section of the abdominal bench to remain
a constant distance from the pivoting torso section during an abdominal exercise.
The leg section of the abdominal bench pivots towards the abdomen, as does the
torso section when the torso is raised. The leg section is pivotably connected
to the torso section through a number of rods, pivots and levers such that the
gap between the seat and torso section remains the same. A push rod is connected
to the pivoting leg brace and is in turn connected to a torso bracket through several
guide rods and a dog-leg lever. The push rod, guide rods and the dog-leg lever
allow the torso section to remain a constant distance from the fixed seat section.
Allowing the torso and seat section to remain a constant distance eliminates the
pressure on the lower body of the exerciser and will not cause any movement of
the lower body of the exerciser with respect to the torso section.
