Walking lunge muscles worked

Every role here is for this technique: long step forward, back knee lowered towards the floor, then the front leg drives the body up and on.

What muscles does the walking lunge work?

The prime movers of the walking lunge are the quadriceps, gluteus maximus and adductor magnus. They produce knee extension and hip extension. The synergists are the hamstrings, soleus and gastrocnemius. Eight stabilizers hold joints and segments still, among them gluteus medius, gluteus minimus and the erector spinae. The roles follow NSCA (2016) and Neumann (2017).

See it on the body: Muscles Worked by Exercise 3D Explorer →

Joint actions and their prime movers

The joint actions of the walking lunge and the prime movers that produce each
Joint action	Prime movers
Knee extension	The quadriceps
Hip extension	Gluteus maximus and adductor magnus

Every muscle by role

A prime mover produces the lift’s main joint action against the load; a synergist assists that action, or adds a secondary action the lift needs; a stabilizer contracts mostly isometrically to hold a joint or a segment still. A role describes what the muscle does in the technique above, not how hard it works or how much it grows.

The front leg does the lifting, so each muscle below names its side: the front leg, both sides, or the other side.

Prime movers 3

Prime movers in the walking lunge, with what each does
Muscle	What it does here	Side
Quadriceps	Knee extension of the front leg	Front leg
Gluteus maximus	Hip extension of the front leg	Front leg
Adductor magnus	Hip extension of the front leg	Front leg

Synergists 3

Synergists in the walking lunge, with what each does
Muscle	What it does here	Side
Hamstrings	Hip extension of the front leg	Front leg
Soleus	Controlling the front shin, then pushing off	Front leg
Gastrocnemius	Pushing off the back foot into the next step	Other side

Stabilizers 8

Stabilizers in the walking lunge, with what each does
Muscle	What it does here	Side
Gluteus medius	Keeping the pelvis level over the front foot	Front leg
Gluteus minimus	Keeping the pelvis level over the front foot	Front leg
Erector spinae	Holding the trunk upright	Both sides
Rectus abdominis	Bracing the trunk against the load	Both sides
External oblique	Bracing the trunk and resisting rotation	Both sides
Internal oblique	Bracing the trunk and resisting rotation	Both sides
Transversus abdominis	Raising abdominal pressure to stiffen the trunk	Both sides
Quadratus lumborum	Holding the pelvis level against the spine	Both sides

Lowering and lifting

What the prime movers of the walking lunge do in each half of a rep
Phase	What the prime movers do
Lowering	The front leg’s quadriceps and gluteus maximus lengthen under load
Rising	They shorten to drive the body up and forward

Stretched but not loaded

The back leg’s hip flexors are stretched as the back knee drops, then help swing that leg through.

Stretched, on the side away from the front leg: iliopsoas and the rectus femoris of the quadriceps. The explorer’s map leaves them uncolored and names them on the card.

Where these prime movers also work

The quadriceps: prime mover in the back squat, front squat, leg press, conventional deadlift, sumo deadlift, Bulgarian split squat and leg extension; synergist in the barbell hip thrust and front plank.
Gluteus maximus: prime mover in the back squat, front squat, leg press, conventional deadlift, sumo deadlift, Romanian deadlift, barbell hip thrust and Bulgarian split squat.
Adductor magnus: prime mover in the back squat, front squat, leg press, conventional deadlift, sumo deadlift, Romanian deadlift and Bulgarian split squat; synergist in the barbell hip thrust.

Compared with the other lunge lifts

Bulgarian split squat: the same prime movers; synergists only here, gastrocnemius; stabilizers only in the Bulgarian split squat, tensor fasciae latae, adductor longus and brevis, the wrist and finger flexors, and the upper trapezius.

Sources

NSCA, Essentials of Strength Training and Conditioning, 4th ed. (2016)
Neumann, Kinesiology of the Musculoskeletal System, 3rd ed. (2017)

The cited studies that measured muscle activity used electromyography, and a larger signal need not mean more force or more growth (Vigotsky et al. (2018), Front Physiol 8:985). The roles draw on those studies for which muscles a lift involves and how two lifts differ, never to rank one muscle against another.

See these muscles in 3D

Visualiser · Biology Muscles Worked by Exercise 3D Explorer Choose a lift and a real body lights its prime movers, synergists and stabilisers, front and back, with the same muscles in 3D. Visualiser · Biology Muscle Origin, Insertion and Action Explorer Paint a muscle’s origin and insertion on real 3D bones, or click a bone to see what attaches to it.