GHD Back Extension

What is the GHD Back Extension?

The GHD back extension is performed on a glute-ham developer, with the feet locked and the pads at the thighs while you hinge and extend the torso through a full range. The GHD’s pivot and adjustable position allow a deeper stretch and a stricter, more isolated erector and glute contraction than a standard bench back extension, making it a favourite for building posterior-chain strength.

Muscles worked

Primary: Back

The spinal erectors work to extend the spine and hips and hold a braced torso through the GHD’s full range from a deep hinge to full extension.

Secondary: Glutes, Hamstrings

The glutes and hamstrings drive hip extension to raise the torso, contributing more as the range deepens on the GHD.

How to perform the GHD Back Extension

1. Adjust the glute-ham developer so the hip pad sits just below your pelvis and lock your ankles between the foot rollers.
2. Start with the torso hanging straight down over the pad, arms crossed on the chest or holding a plate, spine neutral.
3. Raise the torso by hinging at the hips and contracting the glutes and hamstrings, keeping the spine neutral rather than arching the low back.
4. Rise until the body forms a straight line from ankles to head, stopping there instead of cranking into hyperextension.
5. Squeeze the glutes at the top, then lower the torso back down under control by hinging only at the hips.
6. Avoid rounding then yanking through the lumbar spine, since the fixed GHD position magnifies any end-range spinal loading.

Suggested working range: 10–15 reps. Default progression: double progression.

Mechanics

A single-joint isolation on the glute-ham developer: with the feet anchored and thighs on the pad, the torso lowers into a deep hip flexion and rises to full extension, isolating the erectors and glutes. Unlike a heavy compound hinge, the GHD fixes the lower body so the posterior chain works through its range without balancing an external load, allowing a longer, stricter contraction.

Form cues

• •Set the foot plate and thigh pad so the hips can hinge freely over the edge of the pad.
• •Lower under control into a full hinge, letting the erectors and hamstrings stretch.
• •Rise by squeezing the glutes to a straight line from head to heels, without hyperextending.
• •Hold a plate to the chest for added load once bodyweight reps are easy.

Common mistakes

• •Rounding the spine and then yanking up through the low back rather than hinging cleanly at the hips.
• •Cranking into sharp hyperextension at the top, which the fixed GHD position punishes.
• •Setting the hip pad too high so the hips cannot hinge and the lumbar spine bends under load instead.
• •Adding heavy load before the hinge pattern is clean, magnifying stress on the low back.

Variations & alternatives

• •Bench back extension: a 45-degree or horizontal bench version that’s more widely available.
• •Glute-ham raise: a harder knee-flexion movement on the same GHD that hits the hamstrings.
• •Reverse hyperextension: moving the legs instead of the torso to load the erectors and glutes.
• •Romanian deadlift: a loaded standing hinge for the same posterior chain with a barbell.

Conventional Deadlift

Back · Barbell

Barbell Row

Back · Barbell

Pull-Up

Back · Bodyweight

Lat Pulldown

Back · Machine

Seated Cable Row

Back · Cable

Programming: sets, reps & when to use it

Program the GHD back extension in the library’s 10–15 rep range as an accessory for the erectors, glutes, and hamstrings, where a controlled full range and a strong squeeze beat heavy load. Its deeper range makes it a strict posterior-chain builder after heavier hinges. Because the GHD lets you go deep, ease into the range if you’re new to it. Add a plate once bodyweight reps become easy. Two to four sets work well.

Frequently asked questions