Legs · Squat
Smith Machine Hack Squat
The Smith machine hack squat is a squat variation where the bar rests on your upper back and your feet are placed in front of the bar path, so you lean against the bar as you descend. This keeps your torso upright and shifts load to the quads, like a hack squat machine, with the Smith rails for safety.
Also known as: Smith hack squat, Reverse Smith machine squat, Smith machine squat with feet forward
- Muscle group
- Legs
- Movement pattern
- Squat
- Type
- Compound
- Equipment
- Smith machine
- Difficulty
- Intermediate
What muscles does the smith machine hack squat work?
Primary movers
- Quadriceps
Assisting muscles
- Gluteus maximus
- Adductors
- Hamstrings
- Calves
With your feet in front of the bar path, the bar travels straight down while your hips move back and down behind it. This puts the torso more upright and the knees further forward, which emphasises the quads.
The fixed path takes balance out of the movement, so you can focus on pushing through the legs and train to failure with built-in safeties.
The glutes and adductors help drive you up, and the hamstrings work to control the knee. Calves stabilise at the ankle.
This stance is not natural for everyone. Start with a modest foot position in front of the bar and adjust until you feel stable.
How to do the smith machine hack squat
Setup
- 1
Set the Smith bar at about shoulder height and duck under it, with the bar on your upper traps.
- 2
Step your feet forward and slightly wider than shoulder-width, in front of the bar line.
- 3
Lean back slightly against the bar.
- 4
Unhook the bar and brace your core.
Execution
- 1
Bend your knees and lower yourself, keeping your back against the bar.
- 2
Descend until your thighs are at least parallel to the floor.
- 3
Drive through your feet to stand back up.
- 4
Keep your chest up.
- 5
Do not lock your knees hard at the top.
- 6
Re-hook the bar when finished.
Common smith machine hack squat mistakes
Feet too far forward
An extreme stance lifts your heels and strains the knees.
The fix: Start with a modest forward position and adjust gradually.
Heels lifting
Raised heels shift load to the toes and knees.
The fix: Keep your whole foot planted.
Rounding the lower back
Tucking the pelvis at the bottom stresses the spine.
The fix: Stop above the point where your hips tuck under.
Locking out hard
Slamming the knees straight stresses the joint.
The fix: Stop just short of lockout.
How many sets and reps?
| Goal | Sets | Reps | Load | Rest |
|---|---|---|---|---|
| Hypertrophy | 3–4 | 8–12 | Moderate to heavy | 90–120 s |
| Strength | 3–4 | 5–8 | Heavy | 2–3 min |
| Beginner | 2–3 | 10–12 | Light | 90 s |
A quad-focused alternative when you lack a hack squat machine. Do it after your main squat or deadlift. Keep the feet position consistent so you can track progress.
Running the smith machine hack squat in your next block? Hercules logs every set, shows last session's numbers before you lift, and suggests when to add weight.
Get it on Google PlaySmith Machine Hack Squat variations and alternatives
Hack Squat Machine
AlternativeThe dedicated machine with a back pad.
Barbell Hack Squat
AlternativeA free-weight version where the bar is held behind the legs.
Barbell Back Squat
HarderThe standard squat with a free bar.
Leg Press
EasierA machine with back support.
Barbell Front Squat
HarderA free-weight squat with an upright torso.
Frequently asked questions
Is the Smith machine hack squat good for quads?
Yes. The feet-forward stance and upright torso load the quads heavily.
Where should my feet be?
In front of the bar line, slightly wider than shoulder-width. Adjust until your heels stay down.
Is it safe for the knees?
It is fine for most people with a moderate foot position and controlled depth. Stop if you feel knee pain.
Smith machine hack squat or hack squat machine?
The machine gives a back pad and sled. The Smith version works if you have no hack squat machine.
How deep should I go?
To parallel or just below, without the pelvis tucking under.
Hercules tracks every smith machine hack squat you log, shows you last session's numbers before you lift, and flags when your progress stalls.
Get it on Google Play