Machine 45 Degree Back Extension

What you'll gain

• Strengthens the lower back, glutes, and hamstrings as a connected chain.

• Reinforces the hip-hinge pattern with bodyweight load.

• Builds back resilience that protects deadlifts and rowing variations.

Step-by-Step Instructions

1. 1

   Set the pad height so the top edge sits just below your hip crease and step into the machine.

2. 2

   Plant your feet firmly on the foot platform and cross your arms over your chest.

3. 3

   Brace your core and hold a straight line from head to heels at the starting position.

4. 4

   Hinge forward at the hips, lowering your torso toward the floor with a flat back.

5. 5

   Stop when you feel a stretch in the hamstrings and your torso is roughly parallel to the floor.

6. 6

   Drive your hips into the pad and squeeze your glutes to return to the straight starting line.

Common Mistakes

• Rounding the lower back at the bottom instead of hinging cleanly at the hips.

• Hyperextending the lower back at the top instead of stopping at a straight line.

• Adding weight too soon, which compromises the hinge and overloads the lower back.

• Rushing the descent instead of controlling the lowering phase for the full range.

About This Exercise

The machine 45 degree back extension is performed on an angled hyperextension bench where the lifter hinges forward at the hips and uses the lower back, glutes, and hamstrings to return to a straight line. The 45 degree angle reduces the load compared to a horizontal back extension, making it the most accessible version of the movement and a clean teaching piece for the hip-hinge pattern. For app builders, this is a staple accessory exercise in any leg-day, back-chain, or rehab-adjacent library. Ship it in beginner lower-back strengthening tracks, glute and hamstring accessory blocks, and content aimed at lifters rebuilding strength after a back issue.

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