Primary
Quadriceps
Secondary
Hip flexors
Equipment
Machine
Difficulty
Intermediate
Type
Squat
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The sissy squat machine provides stability and support for the challenging sissy squat movement, letting you focus entirely on quad contraction without worrying about balance. The machine locks your lower legs in place so you can lean back with confidence, achieving a deep quad stretch under load. This is the safest way to perform sissy squats with added resistance.
When to use it
Use for safe and supported quad isolation.
Who it's for
Those with machine access wanting quad isolation.
Adjust the machine to fit your body before adding weight. Keep your hips extended throughout—the movement should come entirely from knee flexion. Go as deep as comfortable and squeeze your quads hard at the top.
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Also targets: hip flexors
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Step into the sissy squat machine.
Lock your lower legs behind the pads.
Hold the handles or cross arms over chest.
Lean back while bending your knees.
Lower until you feel a deep quad stretch.
Push through your quads to return upright.
The machine provides stability and support.
Keep your hips extended throughout.
Go as deep as comfortable.
Focus on the quad squeeze at the top.
Program sissy squat machine as your primary quad isolation movement when available, especially if balance limits your freestanding sissy squats. Use them after compound leg work for targeted quad volume. They pair well with hamstring curls since sissy squats heavily bias quads over posterior chain.
Bending at the hips.
Losing hip position during the Sissy Squat Machine shifts the loading pattern away from your Quadriceps and can compress your lower back. Stay planted and let your Quadriceps do the work.
Not going deep enough.
Squatting patterns like the Sissy Squat Machine load your entire lower body. This mistake shifts that load to structures that weren't designed to handle it. Stay controlled and let your Quadriceps absorb the work.
Using momentum to come up.
Bouncing or using momentum during the Sissy Squat Machine takes work away from your Quadriceps and puts your connective tissue at risk. Control the weight through the full range — if you can't, lower the load.
Rushing through reps.
Rushing through the Sissy Squat Machine reduces the time your Quadriceps spends under tension — which is one of the main drivers of growth. Aim for a controlled 2-second lowering phase on every rep.
Those with machine access wanting quad isolation.
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3-4 sets of 10-12 reps. Rest 60-90s.
MySetPlan places Sissy Squat Machine inside a complete workout — with the right sets, reps, rest periods, and a progression you can follow week to week.
Sample workout
MySetPlan guides you set by set, times your rest, lets you swap if equipment is busy, and tells you what to do next.
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Sissy Squat Machine
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Frequently Asked Questions About the Sissy Squat Machine
The Sissy Squat Machine primarily targets the Quadriceps, making it an effective exercise for quadriceps development. Secondary muscles worked during the Sissy Squat Machine include Hip flexors, providing additional training stimulus. Stabilizer muscles engaged include Core.
The Sissy Squat Machine is rated as intermediate difficulty, meaning it requires some training experience. Those with machine access wanting quad isolation. Focus on proper technique and consider starting with easier variations.
For the Sissy Squat Machine, the recommended approach depends on your goals. 3-4 sets of 10-12 reps. Rest 60-90s. For strength, use 6-8 reps. For muscle growth, perform 10-15 reps. For endurance, complete 15-20 reps.
The Sissy Squat Machine typically requires a machine, which most home gyms don't have. For a home-friendly alternative targeting the same muscles, check the variations section above.
Good alternatives to the Sissy Squat Machine include: Sissy Squat, Leg Extension. These exercises target similar muscle groups as the Sissy Squat Machine and can be used as substitutes based on your equipment availability, gym setup, or training preferences.