Inactive glutes are a frequent problem for people now. Especially with all the sitting we do, the glutes don`t get used very much.
The exercises I`ve done to improve my glutes both in size and function are deadlifts and squatting. I`ve also been working some now on doing pistols or one-legged squats, especially since doing them one-legged helps to activate the auxiallary gluteus medius which is important for stabilizing the pelvis.
I`m at a point now where it feels like it`s making a difference in my running. I`ve noticed now that I`m not having so much tilting back and forth of the pelvis while running.
But it`s a very good idea to give the glutes some attention. Oftentimes muted hip function results in pains and aches elsewhere, pulled hamstrings, ITBS, etc.