Single-Leg Wall Sit

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Exercise Overview

The single-leg wall sit is an isometric unilateral lower-extremity exercise that increases the demand placed on the working quadriceps compared with a traditional bilateral wall sit.

Clinical Purpose

Used to develop unilateral quadriceps strength and load tolerance while maintaining a controlled, relatively stable lower-extremity position.

Primary Muscles

Quadriceps

Secondary contribution from the gluteal musculature and other lower-extremity stabilizers.

How to Perform

Stand with your back supported against a wall and position the feet slightly forward. Lower into a comfortable squat position, then shift the majority of your weight onto one leg. Lift or lightly unload the opposite foot while maintaining the working hip and knee position. Hold the position for the prescribed duration, then return to standing.

Coaching Cues

Keep the working foot firmly planted.
Maintain pressure through the entire foot.
Keep the knee tracking over the foot.
Keep the pelvis level.
Maintain consistent squat depth throughout the hold.
Breathe normally while maintaining tension.

Common Errors

Shifting substantial weight onto the non-working leg.
Allowing the working knee to collapse inward.
Losing the desired knee angle as fatigue develops.
Excessive pelvic rotation or drop.
Holding the breath.
Using a position that is too deep to maintain appropriate control.

Common Clinical Uses

Knee rehabilitation, quadriceps strengthening, unilateral load-tolerance development, muscular endurance training, and progression from bilateral to unilateral lower-extremity loading.

Programming

3–5 sets of 15–45 second holds per side.

Hold duration, knee angle, total volume, and external resistance can be modified based on strength, tolerance, and rehabilitation goals.

Regression

Perform a bilateral wall sit, decrease the squat depth, shorten the hold duration, or allow light support from the opposite leg.

Progression

Increase hold duration, increase squat depth as tolerated, add external resistance, or progress toward dynamic unilateral squat and lunge variations.

Equipment Needed

Bodyweight and a wall

Rehab Phase

Mid

PRO+ Clinical Pearl

Knee angle substantially changes the demand of the exercise. Rather than automatically chasing a deeper wall sit, select a position that creates an appropriate quadriceps challenge while allowing the athlete to maintain consistent alignment and loading throughout the entire hold.