05/09/2026
Many women are capable of moving impressive loads in bilateral, symmetrical, closed kinetic chain exercises like squats and deadlifts, particularly when range of motion is shortened and stability demands are low.
But then you ask them to perform a split squat, step up, or lunge and suddenly things look very different.
Why?
Because unilateral work exposes frontal plane instability and weaknesses that bilateral lifting can often compensate around or hide.
Exercises performed with both feet planted on the floor allow us to rely heavily on symmetry, rigidity, and global force production. But single leg and split stance work demand something more: the ability to stabilize and control force through the foot, pelvis, and trunk while resisting movement side-to-side.
That requires adequate strength and coordination from muscles like:
glute medius and glute minimus
deep hip external rotators
adductors
lateral trunk stabilizers
intrinsic foot musculature
These muscles matter enormously for knee control, pelvic stability, balance, gait, running, climbing stairs, and ultimately the quality and longevity of your heavier lifting too.
This is why single leg work belongs in almost every strength program.