(For the regular bilateral AeroStrength Hip Machine click HERE)
This machine has 2-cylinders, one for each leg, that is why it is called a Unilateral Hip machine. Each leg's resistance is independent of the other. It has also been called a Power Hip Machine, Hip Thigh Machine, Ad/Ab Machine, Ab/Ad Machine, Inner and Outer Thigh Machine, and a Leg Fly Machine.
Hydra-Gym Hydraulic Exercise Power Hip -Ad/Ab Machine