Inability to Accept Load
Hip shifting during the squat can be defined as an inability or unwillingness to accept load on one leg. For example, if you shift towards the right at the bottom, this would be an inability to load the left leg, and shifting to the left is an inability to accept load on the right leg.While the causes of this shift may be multifactorial, including true structural abnormalities (decreased hip ER/IR, structural scoliotic curve), this can also be a motor control issue as well. Sometimes the trainee just subcontiously favors one leg over the other and he/she ends up with a hip shift without even knowing it! Check out the video below to see exactly what I mean!
Don't Forget to Load It!
Regardless of the cause, this supine 90/90 hip drill is the FIRST thing I try. As with any drill, the drill alone is not enough to cause structural change. It's important to immediately load the squat after to groove the new mobility to solidify the results!