Single Leg Low Box Squat exercise animation (Hombre)

Single Leg Low Box Squat

Músculo objetivo
Gluteus Maximus, Quadriceps
Músculos sinergistas
Adductor Magnus, Soleus
Equipamiento
Body weight
Parte del cuerpo
Hips, Thighs
Tipo
Strength

The Single Leg Low Box Squat is a bodyweight strength exercise that builds the gluteus maximus and quadriceps by lowering on one leg until your hips lightly touch a low box, then pressing back up to standing. The adductor magnus assists at the bottom of the range while the soleus stabilizes the ankle throughout. It is an effective progression for developing single-leg strength, balance, and squat depth with a controlled depth target.

Cómo hacer el Single Leg Low Box Squat

  1. 1Place a low box or sturdy surface behind you — roughly 30–40 cm (12–16 inches) high — and stand about half a foot in front of it on one leg.
  2. 2Shift all your weight onto the working leg, lift the free leg slightly off the floor, and brace your core with your chest tall.
  3. 3Extend your arms forward as a counterbalance and hinge slightly at the hip to initiate the descent.
  4. 4Slowly bend the working knee and push your hips back and down toward the box, keeping your torso as upright as control allows.
  5. 5Continue lowering until your glutes make light contact with the box — do not relax or sit down fully; keep tension in the working leg.
  6. 6Pause for one count at the bottom, confirming your working knee tracks over your toes and your heel remains flat on the floor.
  7. 7Drive through the full foot of the working leg to press the floor away and return to the standing position in a controlled, single motion.
  8. 8Lock out the hip and knee at the top, steady your balance, then repeat for the desired reps before switching legs.

Consejos de técnica

  • Keep your working knee aligned with your second and third toes throughout — actively push the knee out to prevent inward collapse.
  • Use the box as a light touch cue, not a seat; the moment your glutes contact it, reverse the movement rather than settling your weight onto it.
  • Reach your arms straight forward during the descent to counterbalance your center of mass and keep the heel planted.
  • A slow eccentric of 2–3 seconds builds more strength and control than dropping quickly to the box.
  • If balance is challenging, lightly hold a doorframe or post with one finger to stabilize until single-leg confidence improves.

Errores comunes

  • Sitting onto the box and relaxing at the bottom — this removes tension from the glutes and quads and turns a strength exercise into a resting pause; tap the surface and drive back up immediately.
  • Letting the working knee cave inward (valgus collapse) during the descent, which stresses the knee joint and reduces glute activation; cue the knee outward over the little-toe side.
  • Rising onto the toes of the standing foot, which indicates insufficient ankle dorsiflexion and shifts excessive load forward onto the knee rather than distributing it through the hip.
  • Dropping rapidly to the box instead of controlling the descent, which bypasses the eccentric muscle work and reduces strength and stability gains.
  • Leaning the torso excessively forward — a small hip hinge is normal, but collapsing the chest toward the thigh shifts load away from the quads and onto the lower back.

Preguntas frecuentes

What muscles does the Single Leg Low Box Squat work?

The exercise primarily targets the gluteus maximus and quadriceps of the working leg. The adductor magnus assists with hip extension through the lower portion of the squat, while the soleus stabilizes the ankle and supports the standing foot throughout the movement.

How low should the box be?

A height that brings your thigh roughly parallel to the floor — typically 30–40 cm (12–16 inches) — is a good starting point. A lower box increases the range of motion and difficulty; if you cannot maintain a flat heel and an upright torso at your current box height, raise it slightly and work down over time.

What is the difference between a Single Leg Low Box Squat and a pistol squat?

In a pistol squat, the free leg is held parallel to the floor with no external support, requiring greater hip flexor strength, balance, and mobility. The Single Leg Low Box Squat provides a depth target and a safety stop, making it a useful stepping stone toward the pistol squat for those still building single-leg strength and range of motion.

How many sets and reps should I do?

Three sets of 5–8 controlled reps per leg with a deliberate pause at the box is a solid starting point. Prioritize form over volume — if your knee caves or your heel rises before the set is complete, reduce the reps and focus on quality.

Is the Single Leg Low Box Squat suitable for beginners?

It is more demanding than a standard bodyweight squat but more approachable than an unsupported single-leg squat because the box limits depth and removes the fear of falling. Beginners can use a higher box and hold a light support with one hand, then progressively lower the box height and reduce assistance as strength and balance improve.

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