Quadruped Hip Extension
glutes
What moves the load, and what it costs
3.5MET
Glutes is the prime mover, with the hamstrings, lower back assisting. No equipment, and a good way to learn what hip extension feels like without the lower back joining in.
Cue: On all fours, drive one heel towards the ceiling with the knee bent, stopping when the hip is fully extended.
Written on other cards as: Donkey kick
SOURCE·2024 Adult Compendium of Physical Activities·FILED UNDER WEIGHTS, 8–15 REPS·REVIEWED JUL 2026
SHARED AXIS · SEVEN VALUES FROM ONE TABLE · HIGHLIGHTED ROW IS THIS MOVEMENT
The compendium files quadruped hip extension under a category, not a lift. Read the ladder as position, not precision: this is heavier work than sitting quietly by a factor of 3.5, and middling for conditioning work.
Turning that MET value into a real energy cost
- Map the movement to a published category. The compendium measures categories of conditioning work, never individual lifts, so quadruped hip extension is filed under Resistance training (weight lifting), multiple exercises, 8–15 repetitions at varied resistance.
- Take the category's MET value — 3.5. One MET is the cost of sitting quietly, so this is 3.5 times resting metabolism.
- Multiply by 3.5 to get millilitres of oxygen per kilogram per minute, the unit the MET is actually defined in.
- Multiply by your bodyweight in kilograms and divide by 200. The result is kilocalories per minute of work.
- Count working minutes only. Under load, not under the roof — a set of eight is about 25 seconds of the hour you were there.
kcal/min = MET × 3.5 × body mass (kg) ÷ 200 Quadruped Hip Extension: 3.5 × 3.5 × 70 ÷ 200 = 4.29 kcal/min
SOURCE·ACSM metabolic equation + 2024 Adult Compendium of Physical Activities·REFERENCE BODY MASS 70 KG·REVIEWED JUL 2026
What is actually doing the work
| Muscle | Role | What it does here |
|---|---|---|
| GlutesGluteus maximus, medius and minimus | Prime mover | Extends the hip (maximus), and abducts and stabilises it (medius and minimus). The strongest single muscle group in the body. |
| HamstringsBiceps femoris, semitendinosus, semimembranosus | Synergist / stabiliser | Bends the knee and extends the hip. Because they cross both joints, they need both a hinge (hip) and a curl (knee) to be trained fully. |
| Lower backErector spinae and quadratus lumborum | Synergist / stabiliser | Extends the spine and, in most lifting, holds it still against a bending force. It is a stabiliser far more often than a prime mover. |
The prime mover produces the movement against the resistance; synergists assist and stabilisers hold a joint still without moving it. An exercise trains the whole muscle it loads — there is no way to work only part of a muscle, and no exercise removes fat from the area around it.
Set up, then earn the rep
Bodyweight. Every rep should look like the first one. The moment it stops looking like the first one, the set is finished.
PATTERN · HINGE
- Attach the load to the working ankle or set up on all fours, whichever the version calls for.
- Brace the trunk hard so the lower back cannot arch — this is the whole technical challenge.
- On all fours, drive one heel towards the ceiling with the knee bent, stopping when the hip is fully extended.
- Drive the leg back by extending the hip, keeping the pelvis square.
- Stop when the hip is fully extended, before the lower back starts to help. Squeeze for a beat.
- Return under control without letting the trunk move.
Where this one breaks down
Not theory. These are the faults you correct on a gym floor, and the correction that actually works.
Arching the back to get more range.
The extra range is spinal, not hip. Keep the ribs down and shorten the movement.
Rotating the pelvis open.
Square hips, or the obliques and lower back do the work instead of the glute.
Expecting it to remove fat from the hips.
It builds the muscle underneath. Where the body stores fat is not decided by which exercise you chose.
Regress it, or progress it
Regress — earn it first
Nothing on this site regresses it further: this is already near the entry point of its pattern. Take load off, shorten the range, or slow the tempo — in that order.
Prescription: load, reps, rest
Read off the goal, then hold the technique constant as the load climbs. Derived from the movement's mechanics, not invented for this page: a single-joint movement does its best work in moderate to high reps — very low reps load the joint before the muscle.
| Goal | Sets | Reps | Rest | Notes |
|---|---|---|---|---|
| Strength | 3–4 | 6–10 | 2 min | Single-joint work responds poorly to very low reps — the joint gets the load before the muscle does. |
| Muscle size | 3–4 | 10–15 | 60–90 sec | This is where isolation work earns its place: cheap volume for one muscle, little systemic fatigue. |
| Endurance / fat loss | 2–3 | 15–25 | 30–45 sec | High reps here are genuinely useful — the load is small enough that form survives the fatigue. |
| First month | 2 | 12–15 | 60 sec | Light. Isolation work is for adding volume later, not for building a base. |
Time under load, in kilocalories
Read these as minutes of work, not minutes in the building. A set of eight takes about twenty-five seconds; the rest of the hour is rest, chalk and queueing.
Mapped category: Resistance training (weight lifting), multiple exercises, 8–15 repetitions at varied resistance — 3.5 MET. That is the published category this movement is filed under, not a measurement of this specific lift.
Worked at 3.5 MET × 3.5 × 70 kg ÷ 200 = 4.29 kcal per working minute for a 70 kg adult. Scale it by your own bodyweight; the equation is linear. The full activity dataset lives at BurnLab.
SOURCE·2024 Adult Compendium of Physical Activities·CATEGORY VALUE, NOT A PER-EXERCISE MEASUREMENT·REVIEWED JUL 2026
If the rack is taken
Substitutes train the same prime mover through the same pattern with different kit. Computed from the muscle and pattern data on this card, not hand-picked to fill a grid.
This one needs no equipment at all, which is why it belongs in every travel and home programme. Every no-equipment movement is listed together.
Where it sits in a week
One movement is not a programme. The twelve templates put these in order, including 6 that need no gym at all.
The questions that come up on the floor
What muscles does the quadruped hip extension work?
Quadruped Hip Extension is a single-joint isolation movement in which the glutes is the prime mover, assisted by the hamstrings, lower back. Extends the hip (maximus), and abducts and stabilises it (medius and minimus). The strongest single muscle group in the body.
Is the quadruped hip extension good for beginners?
Yes. It rates 1 out of 5 for technical difficulty on this site — learnable in a single session with no coaching. Start with the lightest sensible load and two or three sets of 12–15.
What can I do instead of the quadruped hip extension at home?
Nothing is needed — the quadruped hip extension already requires no equipment at all, which is why it belongs in any home programme.
How many sets and reps of the quadruped hip extension should I do?
For muscle size, 3–4 sets of 10–15 with 60–90 sec rest. For strength, 3–4 sets of 6–10 with 2 min rest. In your first month, 2 sets of 12–15, stopping well short of failure. Total weekly hard sets per muscle group matters more than the exact rep number in any of these ranges.
Does the quadruped hip extension burn fat from the glutes?
No. No exercise removes fat from the area it trains — spot reduction has been tested repeatedly and does not happen. Training the glutes builds the muscle underneath; where body fat is lost from is decided by an overall calorie deficit and by your genetics, not by which exercise you chose.
Muscle roles follow standard kinesiology references and are described by joint action rather than by gym convention — see how this site is built. Energy figures are derived from the 2024 Adult Compendium of Physical Activities. Every reference is named and dated on the sources page. General information only — not medical or coaching advice. Load, form and progression should be adjusted to your own experience and any injury history. When in doubt, get coached in person.
SOURCE·Published exercise references·MUSCLE ROLES ASSIGNED BY JOINT ACTION·REVIEWED JUL 2026
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