Barbell Hack Squat
Bar behind the legs shifts load onto the quads with an upright torso.
Setup
- Barbell on the floor BEHIND the heels, feet shoulder width.
- Reach down and grip the bar just outside the legs.
How To Do It
- Stand up by driving the floor away, keeping the bar close to the calves.
- Keep the chest up — this is a squat, not a deadlift.
- Lower along the same path behind the legs.
Breathing
Inhale at the bottom, exhale standing.
Common Mistakes
- Letting the bar drift away from the legs.
- Turning it into a deadlift by hinging instead of squatting.
Programming It
| Goal | Sets | Reps | Rest |
|---|---|---|---|
| Strength | 3–5 | 4–6 | 2–3+ min |
| Muscle | 3–4 | 8–12 | 60–90 sec |
| Endurance / Conditioning | 2–3 | 15–20 | 30–45 sec |
Why This Exercise Works
Squatting loads the quadriceps, glutes and spinal erectors simultaneously under a long range of motion.
Where It Fits in a Program
Bar behind the legs shifts load onto the quads with an upright torso. Train it when you are fresh enough to execute it well — compound work early in a session, isolation and accessory work after. You should have a working base in the underlying pattern before loading this heavily. Add weight only when the current load is genuinely comfortable for all prescribed reps.
Progressing and Regressing It
To progress the barbell hack squat: add 2.5-5lb per side once you complete all sets at the top of the range, or pause at the hardest point of the barbell hack squat. To regress it: strip to an empty bar and rebuild the pattern, or use a machine version. Change one variable at a time.
Equipment and Substitutions
This version uses a barbell. If that is unavailable, choose another exercise training the same muscles from the list below — the pattern matters more than the specific implement.
Related Exercises
- Zercher Squat — Quads, Glutes, Core, Upper Back
- Front Squat — Quads, Core, Upper Back
- Sissy Squat — Quads
- Landmine Squat — Quads, Glutes, Core
- Hack Squat — Quads, Glutes
- Box Jump — Quads, Glutes, Power
- Jump Squat — Quads, Glutes, Power
- Step-Up — Quads, Glutes, Balance
Common Questions
What muscles does the barbell hack squat work?
The barbell back squat primarily trains the legs, glutes, core. The listed muscles are highlighted in the animation above so you can see which tissue is producing the movement rather than guessing from the exercise name.
How many sets and reps should I do?
The barbell hack squat is a demanding compound movement, so it belongs early in a session. Three to five sets of three to six reps for strength; three to four of six to ten for size. Rest two to three minutes.
What are the most common barbell hack squat mistakes?
On the barbell back squat, the usual faults are letting the tempo run away on the lowering phase, loading beyond what the legs, glutes, core can control, and cutting the range short at the hardest point of the rep.
Do I need a barbell to do this?
This version uses a barbell. If you don't have that, use another exercise that trains the quads, glutes through a similar range — the muscles and the movement pattern matter more than the specific piece of equipment.
Is this safe if I have an existing injury?
The barbell hack squat loads the knee, hip and lower back directly, so an existing problem there is the one to watch. If a rep reproduces your pain rather than normal training discomfort, stop and get it assessed. This is general fitness information, not medical advice.
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Form guide for educational purposes — not medical advice. New to training or working around an issue? Apply for coaching and get a plan built for your body.