Lever Back Extension
The Lever Back Extension primarily works the Erector Spinae, with secondary activation of the Adductor Magnus, Biceps Femoris (Long Head), Gluteus Maximus and stabilizer support from the Adductor Magnus, Biceps Femoris (Long Head), Gluteus Maximus, Rectus Femoris. It is a machine isolation exercise at beginner difficulty.
The Lever Back Extension is an beginner isolation exercise performed with machine, following a hinge movement pattern. It primarily targets the Erector Spinae, with secondary engagement of the Adductor Magnus, Biceps Femoris (Long Head), Gluteus Maximus. This is a bilateral pulling movement, engaging both sides of the body simultaneously.
A machine isolation pull exercise targeting the Erector Spinae.
| Equipment | Machine |
|---|---|
| Difficulty | Beginner |
| Type | Isolation |
| Movement | Hinge |
| Force | Pull |
| Laterality | Bilateral |
| Primary | Erector Spinae |
| Secondary | Adductor Magnus, Biceps Femoris (Long Head), Gluteus Maximus |
Muscles Worked
The Erector Spinae is the primary mover, taking on the bulk of the workload throughout the full range of motion. The Adductor Magnus, Biceps Femoris (Long Head), and Gluteus Maximus act as secondary movers, assisting the primary muscles and contributing meaningfully to the overall output. The Adductor Magnus, Biceps Femoris (Long Head), Gluteus Maximus, and 1 other muscles act as stabilizers, maintaining joint position and postural alignment throughout the movement.
Primary Muscles
- Primary Muscle Erector Spinae (back)
Secondary Muscles
- Secondary Muscle Adductor Magnus (adductors)
- Secondary Muscle Biceps Femoris (Long Head) (hamstrings)
- Secondary Muscle Gluteus Maximus (glutes)
Stabilizer Muscles
- Stabilizer Muscle Adductor Magnus (adductors)
- Stabilizer Muscle Biceps Femoris (Long Head) (hamstrings)
- Stabilizer Muscle Gluteus Maximus (glutes)
- Stabilizer Muscle Rectus Femoris (quadriceps)
How to Perform
Preparation
- Sit on machine with back against padded lever.
- Push hips back against back of seat by pushing feet against platform.
- Arch back in "C" shape.
Execution
- Extend spine until hyperextended.
- Return and repeat.
Comments
- To avoid hip movement, push hips back into seat by pushing feet into platform throughout exercise.
- Position foot platform, so small space remains between edge of seat and back of lower thigh.
- Use seat belt if it becomes difficult to stabilize hips.
- SeeLow Back Debate.
- Also see exercises onold Nautilus MachineandMedEx Low Back Machine.
Tips & Common Mistakes
- Drive your hips back rather than squatting down — the hinge is a hip-dominant movement.
- Maintain a flat, neutral spine from head to tailbone throughout every rep.
- You should feel a hamstring stretch at the bottom — that's the target muscle loading up.
Programming Suggestions
Adapt your sets and reps to your training goal. As a beginner-friendly exercise, start with lighter loads and focus on form before progressing weight.
| Strength | 3–4 sets × 6–8 reps at 75–85% 1RM with 90–120 seconds rest. |
|---|---|
| Hypertrophy | 3–4 sets × 10–15 reps at 60–75% 1RM with 60–90 seconds rest. |
| Endurance | 2–3 sets × 15–25 reps at 40–60% 1RM with 30–45 seconds rest. |
Alternative Exercises
These exercises target the same primary muscles (Erector Spinae) and can be substituted based on your equipment or variation preferences.
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