Instructions
Preparation
- Facing bench, stand between bench and lever pads. Lie prone
on bench with knees just beyond edge of bench and lower legs
under lever pads. Grasp handles.
Execution
- Raise lever pad to back of thighs by flexing knees. Lower
lever pads until knees are straight. Repeat.
Comments
- Keep torso on bench to reduce hyperextension of lower back.
Most machines are angled at users hip to position hamstring in
more favorable mechanical position. If this angle is sharp (as
shown), Rectus Femoris is less likely involved as Antagonist
Stabilizer. Dorsal
flexion of ankle reduces active
insufficiency of Gastrocnemius allowing it to assist in knee
flexion. See Knee
flexion abduction force vector diagram.
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Classification
Muscles
Target
Synergists
Antagonist
Stabilizers
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