Hi Fred,
While I don't know of any "case-studies," as a physician I've seen many patients in whom pain is not well controlled, and muscles are stiff in a setting of unaddressed ACEs. Take a look at what the sympathetic nervous system does to muscle tone and how activities that decrease this (and stimulate the parasympathetic nervous system) like deep breathing, yoga and relaxing stretches (nothing too aggressive). If patients (and practitioners) understand WHY the body is doing what it is, they may be more likely inclined to follow the required steps to get the body back into balance.
Let me know if you have further questions or thoughts