Lever Leg Extension
The Lever Leg Extension primarily works the Rectus Femoris and stabilizer support from the Biceps Brachii (Long Head), Brachialis, Brachioradialis, Levator Scapulae, Trapezius (Middle), Trapezius (Upper). It is a machine isolation exercise at beginner difficulty.
A machine isolation push exercise targeting the Rectus Femoris.
| Equipment | Machine |
|---|---|
| Difficulty | Beginner |
| Type | Isolation |
| Movement | Extension |
| Force | Push |
| Laterality | Bilateral |
| Primary | Rectus Femoris |
Muscles Worked
Front
Back
Primary
Secondary
Stabilizer
Primary Muscles
- Primary Muscle Rectus Femoris (quadriceps)
Stabilizer Muscles
- Stabilizer Muscle Biceps Brachii (Long Head) (biceps)
- Stabilizer Muscle Brachialis (biceps)
- Stabilizer Muscle Brachioradialis (biceps)
- Stabilizer Muscle Levator Scapulae (neck)
- Stabilizer Muscle Trapezius (Middle) (back)
- Stabilizer Muscle Trapezius (Upper) (back)
Instructions
- Preparation: Sit on apparatus with back against padded back support. Place front of lower legs under padded lever. Position knee articulation at same axis as lever fulcrum. Grasp handles to sides for support. Execution: Move lever forward and upward by extending knees until legs are straight. Return lever to original position by bending knees. Repeat. Comments: Stabilizers (as seen below) may be used during heavy resistances to prevent body rising off of seat. Alternatively, seat belt can be used.
Alternative Exercises
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