10 Best Lying Machine Squat Alternatives for Quad Development

You can replace the Lying Machine Squat with several quad-focused options: leg press, front squat, Bulgarian split squat, hack squat, and goblet squat. For each, prioritize knee-over-toe tracking, brace the core, and use a controlled descent to ~90° to maximize quadriceps activation. Narrow stances bias the vastus medialis.

Original Exercise: Lying Machine Squat

Lying Machine Squat
Primary Muscle
Quadriceps
Equipment
Machine
Difficulty
Beginner
Type
Compound
Secondary Muscles: Calves, Glutes, Hamstrings
How to Perform Lying Machine Squat
  1. Adjust the leg machine to a height that will allow you to get inside it with your knees bent and the thighs slightly below parallel.
  2. Once you select the weight, position yourself inside the machine face up with the knees bent and thighs slightly below parallel to the platform. Make sure that the knees do not go past the toes. The angle created between the hamstrings and the calves should be one that is slightly less than 90 degrees (since your starting position requires you to start slightly below parallel). Your back and your head should be resting on the machine while your shoulders are pressed under the shoulder pads.
  3. Place your hands by the handles and position your feet slightly pointing out at a shoulder width position. This will be your starting position.
  4. While pressing with the balls of the feet as you breathe out, make your whole body erect as you squeeze the quads. Hold the contracted position for a second. Tip: Since you are starting below parallel, you can opt to use your hands to help you up by pressing on your thighs only on the first repetition.
  5. Slowly squat down as you inhale but instead of going all the way down to the starting position, just stop once your thighs are parallel to the platform. The angle between your hamstrings and calves should be a 90-degree angle.
  6. Repeat for the recommended amount of repetitions.
Pro Tips
  • Category: Strength
  • Force: Push
  • Movement type: Compound

Ranked Lying Machine Squat Alternatives

Best Match
Narrow Stance Hack Squats

1. Narrow Stance Hack Squats

91.4% Match
Quadriceps Machine Intermediate Isolation
How to perform this exercise
  1. Place the back of your torso against the back pad of the machine and hook your shoulders under the shoulder pads provided.
  2. Position your legs in the platform using a less than shoulder width narrow stance with the toes slightly pointed out. Your feet should be around 3 inches or less apart. Tip: Keep your head up at all times and also maintain the back on the pad at all times.
  3. Place your arms on the side handles of the machine and disengage the safety bars (which on most designs is done by moving the side handles from a facing front position to a diagonal position).
  4. Now straighten your legs without locking the knees. This will be your starting position.
  5. Begin to slowly lower the unit by bending the knees as you maintain a straight posture with the head up (back on the pad at all times). Continue down until the angle between the upper leg and the calves becomes slightly less than 90-degrees (which is the point in which the upper legs are below parallel to the floor). Inhale as you perform this portion of the movement.
Narrow Stance Leg Press

2. Narrow Stance Leg Press

91.4% Match
Quadriceps Machine Intermediate Isolation
How to perform this exercise
  1. Using a leg press machine, sit down on the machine and place your legs on the platform directly in front of you at a less-than-shoulder-width narrow stance with the toes slightly pointed out. Your feet should be around 3 inches or less apart. Tip: Keep your head up at all times and also maintain the back on the pad at all times.
  2. Lower the safety bars holding the weighted platform in place and press the platform all the way up until your legs are fully extended in front of you. Tip: Make sure that you do not lock your knees. Your torso and the legs should make a perfect 90-degree angle. This will be your starting position.
  3. As you inhale, slowly lower the platform until your upper and lower legs make a 90-degree angle.
  4. Pushing mainly with the heels of your feet and using the quadriceps go back to the starting position as you exhale.
  5. Repeat for the recommended amount of repetitions and ensure to lock the safety pins properly once you are done. You do not want that platform falling on you fully loaded.
Smith Machine Leg Press

3. Smith Machine Leg Press

90.7% Match
Quadriceps Machine Beginner Isolation
How to perform this exercise
  1. Position a Smith machine bar a couple feet off of the ground. Ensure that it is resting on the safeties. After loading the bar to an appropriate weight, lie underneath the bar. Place the middle of your feet on the bar, tucking your knees to your chest. This will be your starting position.
  2. Begin the movement by driving through your feet to move the bar upward, extending the hips and knees. Do not lock out your knees.
  3. At the top of the motion, pause briefly before returning to the starting position.
Sled 45° Leg Press (back Pov)

4. Sled 45° Leg Press (back Pov)

85% Match
Glutes Sled Beginner Isolation
How to perform this exercise
  1. Adjust the seat of the sled machine so that your knees are at a 45-degree angle.
  2. Sit on the sled machine with your back against the backrest and your feet shoulder-width apart on the footplate.
  3. Grip the handles on the sides of the seat for stability.
  4. Push the footplate away from your body by extending your legs, keeping your heels on the footplate.
  5. Pause for a moment at the fully extended position.
Sled 45° Leg Press (side Pov)

5. Sled 45° Leg Press (side Pov)

85% Match
Glutes Sled Beginner Isolation
How to perform this exercise
  1. Adjust the seat of the sled machine so that your knees are at a 90-degree angle when your feet are on the footplate.
  2. Sit on the sled machine with your back flat against the backrest and your feet shoulder-width apart on the footplate.
  3. Grip the handles on the sides of the seat for stability.
  4. Push against the footplate to extend your legs, straightening them completely.
  5. Pause for a moment at the top, then slowly bend your knees to lower the footplate back to the starting position.
Sled 45° Leg Press

6. Sled 45° Leg Press

81% Match
Glutes Sled Intermediate Isolation
How to perform this exercise
  1. Adjust the seat and footplate of the sled machine to a comfortable position.
  2. Sit on the sled machine with your back against the backrest and your feet shoulder-width apart on the footplate.
  3. Grip the handles on the sides of the seat for stability.
  4. Push the footplate away from your body by extending your legs, keeping your heels on the footplate.
  5. Continue pushing until your legs are almost fully extended, but without locking your knees.
Sled Lying Squat

7. Sled Lying Squat

81% Match
Glutes Sled Intermediate Isolation
How to perform this exercise
  1. Adjust the sled machine to a comfortable weight.
  2. Lie on your back on the sled machine with your feet on the footplate.
  3. Position your feet shoulder-width apart and slightly angled outwards.
  4. Grip the handles of the sled machine for stability.
  5. Engage your glutes and core muscles.
Calf Press

8. Calf Press

78.7% Match
Calves Machine Beginner Isolation
How to perform this exercise
  1. Adjust the seat so that your legs are only slightly bent in the start position. The balls of your feet should be firmly on the platform.
  2. Select an appropriate weight, and grasp the handles. This will be your starting position.
  3. Straighten the legs by extending the knees, just barely lifting the weight from the stack. Your ankle should be fully flexed, toes pointing up. Execute the movement by pressing downward through the balls of your feet as far as possible.
  4. After a brief pause, reverse the motion and repeat.
Calf Press On The Leg Press Machine

9. Calf Press On The Leg Press Machine

78.7% Match
Calves Machine Beginner Isolation
How to perform this exercise
  1. Using a leg press machine, sit down on the machine and place your legs on the platform directly in front of you at a medium (shoulder width) foot stance.
  2. Lower the safety bars holding the weighted platform in place and press the platform all the way up until your legs are fully extended in front of you without locking your knees. (Note: In some leg press units you can leave the safety bars on for increased safety. If your leg press unit allows for this, then this is the preferred method of performing the exercise.) Your torso and the legs should make perfect 90-degree angle. Now carefully place your toes and balls of your feet on the lower portion of the platform with the heels extending off. Toes should be facing forward, outwards or inwards as described at the beginning of the chapter. This will be your starting position.
  3. Press on the platform by raising your heels as you breathe out by extending your ankles as high as possible and flexing your calf. Ensure that the knee is kept stationary at all times. There should be no bending at any time. Hold the contracted position by a second before you start to go back down.
  4. Go back slowly to the starting position as you breathe in by lowering your heels as you bend the ankles until calves are stretched.
  5. Repeat for the recommended amount of repetitions.
Hack Squat

10. Hack Squat

77% Match
Quads Machine Intermediate Isolation
How to perform this exercise
  1. Place the back of your torso against the back pad of the machine and hook your shoulders under the shoulder pads provided.
  2. Position your legs in the platform using a shoulder width medium stance with the toes slightly pointed out. Tip: Keep your head up at all times and also maintain the back on the pad at all times.
  3. Place your arms on the side handles of the machine and disengage the safety bars (which on most designs is done by moving the side handles from a facing front position to a diagonal position).
  4. Now straighten your legs without locking the knees. This will be your starting position. (Note: For the purposes of this discussion we will use the medium stance described above which targets overall development; however you can choose any of the three stances described in the foot positioning section).
  5. Begin to slowly lower the unit by bending the knees as you maintain a straight posture with the head up (back on the pad at all times). Continue down until the angle between the upper leg and the calves becomes slightly less than 90-degrees (which is the point in which the upper legs are below parallel to the floor). Inhale as you perform this portion of the movement. Tip: If you performed the exercise correctly, the front of the knees should make an imaginary straight line with the toes that is perpendicular to the front. If your knees are past that imaginary line (if they are past your toes) then you are placing undue stress on the knee and the exercise has been performed incorrectly.

Why You Might Need a Lying Machine Squat Alternative

You may swap the Lying Machine Squat due to joint pain, unavailable equipment, or specific training goals. Knee or low-back issues often require less spine-compressive or more unilateral options; for example, choose a leg press to reduce lumbar load and keep knees tracking over toes to maintain quad torque. Preference for unilateral strength or balance makes Bulgarian split squats useful because they increase knee flexion and single-leg quad activation. Facility limits or travel may force bodyweight or kettlebell substitutes; use a goblet squat with a raised heel to increase knee moment arm and quad recruitment. Adjust range of motion and stance width to manage patellofemoral stress and target specific quadriceps heads.

How to Choose the Right Substitute

Select a substitute based on joint tolerance, available load, and desired muscle emphasis. If you need heavy, low-back-friendly loading, pick the horizontal leg press and cue pushing through the mid-foot to emphasize knee extension torque. For unilateral strength and balance, choose Bulgarian split squats and keep the torso upright with the front knee tracking over the foot to increase quad strain. If you lack load but want hypertrophy, use slow eccentrics and pause reps on goblet squats to raise time under tension. Consider ankle mobility and adjust stance or use an elevated heel to preserve knee travel while minimizing compensatory hip flexion.

Frequently Asked Questions

What muscles does Lying Machine Squat work?

The Lying Machine Squat primarily targets the quadriceps (vastus lateralis, medialis, and intermedius) through knee extension torque. It also recruits glutes and hamstrings as secondary extensors and requires core bracing for spinal stability during loaded knee flexion and extension.

What is the best bodyweight alternative to Lying Machine Squat?

Bulgarian split squats are the top bodyweight substitute for quad mass and strength because they increase knee flexion and single-leg loading. Cue an upright torso, drive through the front heel, and use a shorter stride to bias the quadriceps over the glutes.

Can I build muscle without doing Lying Machine Squat?

Yes. You can achieve hypertrophy with alternative movements that provide progressive overload, sufficient volume, and time under tension. Use leg presses, front squats, or slow-tempo goblet squats with controlled eccentrics and paused concentric reps to replicate quadriceps stimulus.

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