SPEAKER_05 1:17:47–1:19:00
Okay. Yeah, because if they walked in the door, they're somehow getting through all of the propulsive phases, whether they have access to them or not. They're just going to create it somewhere. Why do I describe internal rotation and external rotation as either movement down or movement up? Because that's what it is, and how you create that is dependent on your structure and how you're managing the constraints. So your internal rotation might be at L5S1, pushing you into the ground because you can't do it from the hip because that is twisted into external rotation because of your superficial compressive strategy. You see it? So what they should have told you in school, when you were measuring table tests and they said this is how you measure hip internal rotation at 90 degrees of hip flexion, what they should have said is the whole system is turning into internal rotation. We just want most of it to come from the hip joint. And they didn't tell you, oh, when you get hip internal rotation in this position, the spine is also turning away from you. They didn't tell you that, but that's what's happening.
hip internal rotationsuperficial compressive strategybiomechanical compensationpropulsive phaseship flexion