Information developed in the '50s and after has pretty much moved into professional medical treatment/therapy practice now, and for information you can use at a practical and personal level those advertising in physical therapy, and expecially "sports medicine and therapy" should be fairly well informed. Many medium to larger cities in my region have numerous such practitioners.
Without a more specific question, any additional "answers" we can suggest are just random wisecracks.
If there is a local university with a medical/nursing option in the graduate school, an advanced student might be willing to consult with you - or use you as a student research project.(?) If there is a "sports medicine clinic" in the area, you may be able to pick up useful handouts in the front lobby to give you some direction, if your question isn't an obtuse one.
Your local pro or semi-pro ball team (any kind of balls) might be willing to pass a question to their "trainer" who should have experience and knowledge in the field, perhaps for the price of a brew if you can find out where they "relax."
Suggestions given thus far would perhaps be appropriate if you're planning on training for a marathon, or perhaps want to swim the Channel, but I suspect you have other purposes(?).