How to Do Barbell Hack Squat
Start and end of one clean rep of Barbell Hack Squat.
Quick facts
| Primary muscle | Quads |
|---|---|
| Secondary muscles | Calves, Forearms, Hamstrings |
| Equipment | Barbell |
| Category | Strength |
How to perform Barbell Hack Squat
- Stand up straight while holding a barbell behind you at arms length and your feet at shoulder width. Tip: A shoulder width grip is best with the palms of your hands facing back. You can use wrist wraps for this exercise for a better grip. This will be your starting position.
- While keeping your head and eyes up and back straight, squat until your upper thighs are parallel to the floor. Breathe in as you slowly go down.
- Pressing mainly with the heel of the foot and squeezing the thighs, go back up as you breathe out.
- Repeat for the recommended amount of repetitions.
Muscles worked
- Quads (primary): extends the knee to drive squats, lunges and jumps.
- Calves (secondary): points the foot to power push-off and steady the ankle.
- Forearms (secondary): controls your grip and keeps the wrist steady under load.
- Hamstrings (secondary): bends the knee and extends the hip through hinges and pulls.
Sets & reps by goal
| Goal | Sets × reps | Load | Rest |
|---|---|---|---|
| Strength | 3–5 × 3–5 | Heavy (~85%+) | 2–3 min |
| Hypertrophy | 3–4 × 8–12 | Moderate (~65–75%) | 60–90 s |
| Endurance | 2–3 × 15–20 | Lighter (~50–60%) | 30–45 s |
Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
Form tips
- Keep the knees tracking in line with the toes and push the whole foot into the floor.
- Keep the bar path close and stacked over your mid-foot; letting it drift forward wastes force and loads the lower back.
- Treat every rep the same — a repeatable setup and bar path is what lets you add weight safely over time.
- Breathe out on the effort and in on the return, keeping one steady rhythm across the set.
Common mistakes
- Letting the knees cave inward as you push out of the bottom.
- Loading the bar heavier than your form allows and turning strict reps into a whole-body heave.
- Chasing weight jumps before the current load feels solid on every rep.
Frequently asked questions
What muscles does Barbell Hack Squat work?
Barbell Hack Squat mainly works the quads, with the calves, forearms, hamstrings helping as secondary movers.
What equipment do I need for Barbell Hack Squat?
Barbell Hack Squat needs a barbell and plates (plus a rack or bench where the movement calls for one).
How many sets and reps should I do for Barbell Hack Squat?
It depends on your goal: about 3–5 sets of 3–5 heavy reps for strength, 3–4 sets of 8–12 for muscle growth, or 2–3 sets of 15–20 for endurance. Pick the row that matches your goal. If you're newer, anchor in the hypertrophy range while you groove the form.
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