I have recently got into running. I had a massive ankle injury (road accident) a decade back, so knew that there would be some imbalances to take care off that would make me more prone to injury. I trawled literature and books, looking for more holistic approaches to running, and found the following books to be quite informative, providing links to scientific literature for most of their points:

* Running Rewired, by Jay Dicharry: https://www.amazon.com/Running-Rewired-Reinvent-Stability-St...

* Anatomy for Runners, by Jay Dicharry: https://www.amazon.com/Anatomy-Runners-Unlocking-Potential-P...

* Run for your life, by Mark Cucuzzella: https://www.amazon.com/Run-Your-Life-Without-Well-Being/dp/1...

* Running Science, by Owen Anderson: https://www.amazon.com/Running-Science-Sport-Owen-Anderson/d...

The podcast "Science of Ultra" is also great and strongly rooted in a scientific approach to claims about running and training.

I started to feel some tightness in my left hip after running longer distances (25+ km), and went to PT. I basically now have a strong program of cross strength training that closely mimics the exercises in the Dicharry books, and I am know using muscles that were neglected before (glutes, mostly). I haven't felt any pain / tightness since.

While I don't have much of a background in sports, I do play bass and piano, and of course sit at a keyboard all day, which are also highly "injurious" activities. If something hurts or feels wrong, it is wrong, and you should address it. This is absolutely true for playing and typing, which should feel effortless at all times. I don't have enough experience with running to know how well that applies, since adaptation and training stimulus doesn't feel the most comfortable.