Interesting, thanks taiger111.

Won't the nervous system typically take the path of least resistance? So maybe, historically, I have had a movement dysfunction and incorrectly used my hamstrings more than my glutes in certain movements, resulting in the glutes becoming weak. Therefore now my nervous system uses the stronger hamstrings as it is easier but if I gain strength in the undeveloped glutes then it will activate these (maybe with some conscious activating of them at the correct times). Is this possible?

Also could you explain the reasons behind stretching the gluteal muscles and quads to correct the issue?

Note: I have been told my glute medius are both work and have been given a strengthning program for these.

Thanks and I appreciate the time you have took to reply.