Bill Hartman 5:07–6:15
Okay, so if I squeeze the left side first, that creates a bias of volume to the right. I have AP expansion, but now I have to push. My center of gravity is still going to push forward, which means I'm going to get even more AP expansion on the right side. So I squeeze the left, bias the expansion to the right. Now I'm squeezing A to P on the right. The left is already squeezed, so I can't go back that way. As I squeeze A to P, it's going to move from left to right across the pelvis, and it's going to move me to the right. Take a water balloon, look down upon it from the superior view, squeeze the left side, and you will see that it creates a round bulge to the right. Hold onto that squeeze and then gradually squeeze across the balloon, and the bulge of the balloon stays to the right, and that's the direction that I will move. That's what's happening.
respirationanterior-posterior expansioncenter of gravitymanual pressurebiomechanical analogy