Hi, here is a link explaining what i was saying. I agree with a lot been written but my example of the rubber band is exactly what has happened. You will read this further in the link.
As your pelvis lifts at the back, all these muscles (for example hammies) are being stretched more and more and more to compensate for the extra length needed. Think of your upper leg being lengthened due to the suoer stretch from the flexors and lower back. Like the rubber band being stretched too much. So, these muscles will feel tight because your nervous system just won't allow this constant stretch. We feel this tightness and think 'ahh i need to stretch' but we are just making things worse. These muscles need to be relaxed by lengthening opposing muscles.
Try for yourself, with APT you can feel the tension of the hammies behind your knee, as you go into a posterior alignment you will feel the tension being released. So, yes all these over stretched posterior muscles have to first be relaxed by lengthening opposing muscles.
However, for those of us with the added complication of PFD we have to be careful we don't further aggravate the pf muscles. So we have to modify the standard 'fix' for apt. Mainly totally relaxing/stretching 'the correct' muscles before any strength work.
Okay, here is a link i quickly found explaining what i'm mentioning here.
https://www.guidedfitness.com/blog/t...t-think-again/