Trunk leans instead of pelvis moving
QL and lateral trunk muscles compensate for weak glute med.
Overactive muscles
Quadratus lumborumTFL
Corrective work
Foam RollQuadratus lumborum↗Foam RollTFL↗StretchQL side-bend stretch↗QL and lateral trunk muscles compensate for weak glute med.
Valgus on the standing leg during the single-leg hold.