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Machine Back Extension

Step by step instructions, muscle activation and variants for the Machine Back Extension.

MediumLower back

About this exercise

A back extension performed seated upright on a machine, pushing the torso backward against a padded lever. The machine allows external load for progressive overload while the movement isolates the erector spinae with help from the glutes and hamstrings.

How to Perform

  • Adjust the machine so the pad sits just below your hip bones and your hips can flex freely
  • Secure your feet under the ankle supports and hold any additional weight against your chest or behind your head
  • Begin in a straight-line position with your torso aligned with your legs
  • Hinge at the hips, lowering your upper body downward in a controlled arc
  • Stop when you feel a deep stretch in the lower back and hamstrings
  • Reverse the movement by contracting the glutes and lower back to raise your torso back to the starting position
  • Avoid hyperextending past a neutral spine at the top of the movement

Muscle Activation

Primary
Lower back

Common Mistakes

Common mistakes content is coming soon.

About the Machine Back Extension

The Machine Back Extension is a foundational movement that builds strength and muscle through controlled, progressive overload. Train it 1 to 2 times per week with 3 to 5 working sets per session, gradually adding weight or reps as form holds up.

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