Sit on apparatus with back against padded back support. Place front of lower legs under padded levers. Position knee articulation at same axis as lever fulcrum. Grasp handles to sides for support.
Move one lever forward and upward by extending one knee until leg is straight. Lower to original position. Repeat with opposite side. Continue to alternate between sides.
Stabilizers may be used during heavy resistances to prevent body from rising off of seat. Also see exercises performed on bilateral machine.