Upper Legs Exercise · Smith Machine

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Smith Single Leg Split Squat

A split squat done in the Smith machine locks the bar path vertically, which takes some of the balance demand out of a movement that's already unstable on one leg — useful for lifters who want the unilateral leg work without the coordination challenge. It still isolates each leg individually, exposing strength gaps a bilateral squat would hide. Keep the back knee tracking straight down rather than drifting forward.

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Category

Upper Legs

Equipment

Smith Machine

Target

Quads

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Exercise reference published by PlanWorkouts; see our editorial standards.

How to Do the Smith Single Leg Split Squat

1. Position yourself in front of the smith machine with your feet shoulder-width apart.
2. Rest one foot behind you on a bench or step, toes pointed forward.
3. Grip the smith machine bar for balance.
4. Bend your front knee to lower your body into a lunge, keeping your spine straight.
5. Hold briefly at the bottom, then drive through your front heel to rise back up.
6. Continue for your target number of reps, then switch legs.

Technique & Form Tips

Execute the movement by bending hips and knees while maintaining balance over the midfoot. The specific torso angle and stance are determined by the chosen variation, focusing on controlled descent and ascent throughout the range of motion.

Common Mistakes to Avoid

• Knee collapse: Keep the knees aligned with the feet to maintain stable tracking.
• Losing torso control: Match the torso position to the variation instead of suddenly dropping the chest or changing balance.
• Losing foot support: Keep the demonstrated foot contact during the lowering and rising phases. Jumping variations have a separate takeoff and landing.

How to Breathe During This Exercise

Breathe in a steady, controlled rhythm throughout the effort.

Comfort and Control

Choose a load and range you can control. Stop if the movement causes pain. If discomfort persists, stop and ask a qualified professional about an appropriate exercise and range.

General guidance: Mayo Clinic on weight-training technique. Follow the specific movement steps above for this variation.

Muscles Worked

The Smith Single Leg Split Squat mainly targets your Quads, with your Glutes helping support the movement, along with your Hamstrings.

More Upper Legs Exercises

All Fours Squad Stretch Body Weight · Quads Arms Apart Circular Toe Touch (male) Body Weight · Glutes Assisted Lying Glutes Stretch Assisted · Glutes Assisted Lying Gluteus And Piriformis Stretch Assisted · Glutes Assisted Prone Hamstring Assisted · Hamstrings Assisted Prone Lying Quads Stretch Assisted · Quads

More Quads Exercises

Backward Jump Body Weight · Quads Balance Board Body Weight · Quads Band One Arm Single Leg Split Squat Band · Quads Band Single Leg Split Squat Band · Quads Barbell Bench Front Squat Barbell · Quads Barbell Bench Squat Barbell · Quads

Equipment Alternatives

Don't have smith machine? These target the same quads with different equipment.

Sissy Squat Body Weight · Quads Band One Arm Single Leg Split Squat Band · Quads Barbell Bench Front Squat Barbell · Quads Dumbbell Goblet Squat Dumbbell · Quads

FAQ

What muscles does the Smith Single Leg Split Squat work?

The Smith Single Leg Split Squat mainly works your quads. It also helps strengthen your glutes and hamstrings. Using good, smooth form makes sure you work the right muscles and avoid unnecessary strain on your joints.

What equipment do I need for the Smith Single Leg Split Squat?

You do the Smith Single Leg Split Squat with a smith machine. Make sure your equipment is set up safely before starting. If you work out at home or have limited gear, check out our alternative exercises below.

What form mistake should I watch for on the Smith Single Leg Split Squat?

One mistake to watch for is knee collapse: Keep the knees aligned with the feet to maintain stable tracking.. Use a comfortable range and a controlled return; reduce the load if you cannot maintain the demonstrated setup.

How many sets and reps should I perform on the Smith Single Leg Split Squat?

To build muscle size, aim for 3 to 4 sets of 8 to 12 reps with 90 to 120 seconds of rest. To build pure strength, focus on 4 to 5 sets of 3 to 6 heavier reps with 2 to 3 minutes of rest.

What's a good alternative to the Smith Single Leg Split Squat?

The Sissy Squat trains your quads with body weight and a similar movement pattern. Review its form guide before substituting it, since setup and range of motion can differ.