The Glute Bridge Protocol: The One Muscle Group Standing Between You and a Hip Fracture

The single-leg glute squeeze test

Stand barefoot, near a wall or counter for light fingertip support. Shift your weight onto your right leg. Keep your standing knee soft, not locked.

Now consciously squeeze your right glute, the muscle of the buttock on the standing side. Hold for five seconds.

Three things to look out for:

1. Did the contraction actually happen in the glute, or did you feel it in your lower back?

2. Did your hip drop on the lifted side, or did you stay level?

3. Did you have to hold your breath or brace your abs to make it work?

If you felt your lower back, dropped your hip, or had to brace hard to find the contraction. The nervous system has stopped reliably recruiting the muscle. It isn’t gone or damaged, It just doesn’t answer the phone anymore.

That matters because of where the muscle attaches.

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Why this muscle matters more than any other for your hip

The gluteus maximus is the largest muscle in your body. It originates across the back of your pelvis and inserts onto the iliotibial band and the gluteal tuberosity at the top of the femur. That’s the region that includes the femoral neck and the greater trochanter, and it’s where the overwhelming majority of osteoporotic hip fractures happen.

A 2020 study in a community-dwelling older population found that total hip BMD was significantly associated with gluteus maximus cross-sectional area in women and with muscle density. A separate analysis found femoral neck BMD was significantly associated with gluteus maximus fatty infiltration. Meaning that bigger, less fatty glutes mean denser bone at the hip.

This isn’t correlation alone, It’s mechanical. When the gluteus maximus contracts forcefully against load, it pulls on the femur through its direct attachments. The combined force is transmitted as a bending moment across the femoral neck. That’s the same kind of strain signal that, in LIFTMOR and the Onero program, produced measurable bone density gains in postmenopausal women with osteopenia and osteoporosis.

Walking does not produce this signal at meaningful magnitude. A weighted glute bridge or hip thrust does.

Why the hip thrust beats almost everything else for the glutes

It has been found in multiple studies looking at the electrical activity within muscles that a loaded hip thrust will produce larger measurements than squats.

The biomechanical reason is simple. The gluteus maximus is a hip extensor. It works hardest at end-range hip extension, the position where the femur is in line with or behind the pelvis.

A back squat unloads the glutes at the top of the rep, exactly where they would otherwise be working most. A hip thrust loads precisely at that end-range position. The barbell sits across the hips with maximal mechanical advantage and forces the glutes to do work the spine and quads usually steal.

The unloaded entry version, the glute bridge, is also possibly the safest beginner movement for a person with osteoporosis. It loads the hip in extension while the spine is supported on the floor. It is then easily progressed with weights or repetitions, building into more difficult exercises to master such as a deadlift or heavy back squat.

The 8-week progression: bridge to single-leg to barbell

This is the protocol I would put a 55-year-old female client through if she had a T-score of -2.0 at the femoral neck and had never trained. Two sessions per week, on non-consecutive days.

A note before starting. If you’ve had a recent fragility fracture, are currently on a medication where exercise is being staged (denosumab, teriparatide), or have hip joint pain on any of the test movements, get cleared by a clinician who actually understands resistance training before starting Phase 1.