Machine Back Extension

oec:machine-back-extension

A seated machine exercise targeting the lower back extensors by pushing the upper torso backward against a padded lever arm.

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Also called: Seated Back Extension Machine, Seated Machine Back Extension, Back Extension Machine

How to do it

Adjust the machine seat height so the axis of rotation aligns with your hips.
Position the back pad against your mid-to-upper back, just below the shoulder blades.
Sit with your hips firmly against the back of the seat, secure your feet against the footplates, and cross your arms across your chest or lightly grasp the side handles.

Brace your core and begin extending through your lower back and hips, driving the pad backward in a smooth, controlled motion.
Extend until your torso is roughly aligned with your hips, avoiding excessive hyperextension of the lumbar spine.
Pause momentarily at peak contraction.
Slowly reverse the motion under control, allowing your spine to flex forward slightly to return to the starting position without letting the weight stack touch down.

Exhale as you extend backward against the pad, and inhale as you return forward to the start.

Hyperextending the lumbar spine: Stop the extension once your torso is upright and in line with your pelvis rather than arching violently backward.
Using momentum to swing the weight back: Move slowly through both the concentric and eccentric phases with deliberate muscular control.
Misaligning the machine pivot with the hip joint: Adjust the seat height prior to loading so the machine's pivot axis matches your hips.

Avoid using ballistic speeds or excessive loads if you have a history of lumbar disc pathology.

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