I was recently in my room doing dry mechanics practice, and I began to try to get more momentum, and explosively rotate my torso upon landing. I did this a few times, and it felt fine, so i did it a few more times. All of a sudden i feel this strange pain right under my throwing arm shoulder blade during the aggressive motion. It happens right at or after I come to the “loaded position” in my motion, and it lingers for a few seconds after I complete the dry throw. This area is slightly tender afterwards when massaged, but it causes me no pain during the day except when I try to go through this explosive pitching motion. I rested it for a few days, tried the motion again, and this pain continues to bother me. I’m worried, because a major flaw in my mechanics is that I am not explosive enough, and yet I have no figured out a way to become more explosive without hurting myself. I’m no expert, but based on this diagram: http://staff.tuhsd.k12.az.us/gfoster/standard/muscles2.gif
I would say my pain is one of these muscles: Infraspinatus, Teres Minor, Teres Major or Rhomboidus (not in diagram). I’m kind of desperate right now, because I don’t want there to be any more setbacks in my training. Is it possible I simply over-exerted myself one-time, or do you think there is a fundamental flaw in my motion when I think “explosive.” Note: when I simply play catch or even throw 80%-90% fastballs, this pain is non-existent, but when I consciously try to rotate my torso and get maximum hip shoulder separation, the pain is extremely noticeable. I have never had any problems like this before, what do people on this forum think I should do to recover?