"Could you define pelvic drop since I am unable to view the article please? Is it in the frontal plane? Would farmer and waiter carries be an appropriate exercise to address the QL and GM in order to encourage stabilization of the pelvis and reduce lumbar shear?"
pelvic drop=non weight bearing pelvis dropping in frontal plane= Trendelenburg sign.
In these subjects, in was occurring in Treadmill walking.
The point I'm getting out of this article, and others like it, is don't piece meal muscles (of course occasionally you need to, but not in this case). If we look at this issue from that point of individual muscle then we would also have to look at the same side erector spinae, the same side internal oblique, opposite ext. oblique- the list goes on and on.
As far as remedial exercise, Frans has a few that address the issue.
Others I can think of are SLS on the leg opposite the drop, while keeping the non weight bearing illum as high as possible...double time skips doing the same...extended walking/running in other planes & retro sagittal.
However, in my opinion it may be more of a physical competency thing. Not enough of a lower extremity strength & power base. Pelvic drop means the body is lollygagging in the force reduction phase, maybe as a protective measure. Opinions?