Single Leg Squat (Pistol)
The Single Leg Squat (Pistol) builds full lower-body strength, balance, and control by lowering and standing up on one leg.
Single Leg Squat (Pistol)
Muscles Worked: Single Leg Squat (Pistol)
The Single Leg Squat (Pistol) mainly works your quads and glutes. Your quads do most of the work to lower you under control and stand you back up, while your glutes help drive the rise and keep your hips level so you do not tip or twist. Your hamstrings assist and help steady the knee as you move through a deep bend. Because this exercise uses a very deep squat position on one leg, it places a large training demand on the front of the thigh and glute of the working leg, especially near the bottom, and research on squat training suggests that deeper squat depth can increase lower-limb muscle development compared with shallower squats (Kubo et al., 2019).
Technique and form
How to perform the Single Leg Squat (Pistol)
- Stand tall with your feet together, arms extended in front at shoulder level for counterbalance, and shift your weight to your right foot.
- Lift your left leg straight out in front of you, keeping your foot flexed and leg as straight as possible while maintaining a neutral spine.
- Inhale as you begin to bend your right knee, pushing your hips back as if sitting in a chair while keeping your chest up and extended leg parallel to the floor.
- Maintain tension in your supporting leg's quadriceps and glutes as you continue lowering your body, keeping your weight centered over the middle of your supporting foot.
- Descend until your hamstring touches your calf or as low as possible while maintaining balance, ensuring your supporting knee tracks in line with your toes.
- Pause briefly at the bottom position, keeping your core engaged and back straight to prevent rounding of the spine.
- Exhale forcefully as you push through your heel to extend your knee and hip, driving back up to the starting position without letting your extended leg touch the ground.
- Complete all repetitions on one leg before switching to the other side, maintaining proper breathing and tension throughout the movement.
Important information
- If you're unable to perform the full range of motion, use a bench or box behind you as a depth gauge, gradually decreasing its height as you progress.
- Keep your supporting foot flat on the ground throughout the entire movement—rising onto your toes indicates inadequate ankle mobility or strength.
- Maintain a forward gaze and upright torso to prevent excessive forward lean which can strain your lower back.
- Practice near a wall or sturdy object for support if balance is challenging, gradually reducing assistance as your stability improves.
Is the Single Leg Squat (Pistol) good for muscle growth?
Yes. The Single Leg Squat (Pistol) can build serious leg muscle if you can do it with control and take sets close to failure. Its biggest advantage is that one leg handles your full bodyweight through a deep squat, and training through a deeper squat depth has been shown to increase muscle size in the thighs and glutes more than shallower squat training (Kubo et al., 2019).
- Deep knee bend loads the quads hard — In a pistol, your working leg goes through a very large range of motion, so your quads stay under tension for longer than in a partial rep. That makes each rep more demanding even without external weight.
- The bottom position challenges the glutes — Standing up from the lowest part of the rep forces your glutes to contribute hard, especially if you keep your foot flat and your knee tracking over your toes. In squat training, using a deeper range of motion is linked with greater glute growth than half-squat work (Kubo et al., 2019).
- One-leg loading exposes side-to-side weakness — If one leg is weaker, the pistol makes it obvious fast. That makes it useful for cleaning up strength gaps before moving to harder loaded leg work like the bulgarian split squat.
- Bodyweight does not mean easy to progress — You can make pistols better for muscle growth by slowing the lowering phase, pausing at the bottom, or using a small plate under the heel if ankle mobility limits depth. If full pistols are not there yet, build toward them with a bodyweight squat and assisted single-leg work.
Programming for muscle growth
Do 3-5 sets of 5-10 reps per leg with 90-150 seconds rest. Train them 1-2 times per week because the balance demand and deep range can make quality drop fast. If you cannot hit at least 5 clean reps per leg, use assistance so the target muscles stay loaded instead of turning the set into a balance drill.
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FAQ - Single Leg Squat (Pistol)
Pistol squats demand exceptional unilateral strength, balance, and mobility all at once. By supporting your entire body weight on one leg through a full range of motion, you eliminate the compensation patterns that bilateral squats allow, forcing each leg to develop strength and stability independently.
Start with assisted variations like holding a TRX strap, squatting to a bench, or using a counterweight held in front of you. Focus on building single-leg strength through shallower ranges before attempting the full movement, and work on ankle mobility and hamstring flexibility separately to address common limitations.
For most trainees, 1-2 sessions per week is sufficient to develop the skill while allowing adequate recovery. Start with 2-3 sets of 3-5 reps per leg, focusing on quality over quantity, and ensure at least 48 hours between sessions targeting the same movement pattern.
The most frequent errors include rounding the lower back at the bottom position, allowing the knee to collapse inward, lifting the heel off the ground, or rushing through the movement. Focus on maintaining a neutral spine, tracking your knee over your middle toe, and keeping your weight centered through your entire foot.
While pistol squats deliver intense unilateral development, they shouldn't completely replace traditional weighted squats in a comprehensive program. Use pistols to address asymmetries, improve balance, and as a metabolic stimulus, but incorporate loaded bilateral training for maximum strength and mass development.
Scientific References
Effects of squat training with different depths on lower limb muscle volumes.
Kubo K, Ikebukuro T, Yata H · European journal of applied physiology (2019)
Sources are peer-reviewed academic publications from PubMed.
Single Leg Squat (Pistol)
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