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Are you advocating forearm 'flop/lay back' backwards with your forearm at 90 degrees? Is that what MLB pitchers do? In video 3, you are advocating using weighted balls to increase your range of motion in external rotation. Why does my ROM need to increase? What is the ideal ROM angle?

Essentially, yes. And depending on what major leaguers you look it, it is what I tend to see. I would like to promote more of a focus of 90 degrees with the angle of your back, but there are guys that very on this part of mechanics. I have found that when my external rotation is at its max potential, the rest of my mechanics are where I want them to be. I will address the rest of your questions in two ways. ROM can refer to both static and dynamic ROM. A good way to tell the differences is...

Just to add two cents, most of the players I work with have too much external rotation and not enough internal rotation. Most players that develop elbow issues have this exact imbalance: Internal Rotation Deficit. Not trying to be negative or argumentative in any way, but just what I have seen over 20 years. Not sure why a player would want to create that type of imbalance of ER to IR. additionally, it is not just the shoulder (glenohumeral joint) that allows these folks to get into these...

Do you have an example of a pitcher who has that issue? I'm curious to see an example of a pitcher with that issue. Throughout the process of changing my arm action and overall mechanics, I was pretty consistently told that I have good internal rotation, when my external rotation was poor. So that is something I have little to no focus on that part of my mechanics. I also did very little research on internal research in general, so I am not very knowledgeable about the issues associated with...

Jimster- The DriveLine article you reference in your write up talks about the IR issues. Specifically the Sleeper Stretch. This is all new to me but has become a hot topic in my household since my son has developed scapular issues. He has very limited IR on his throwing arm compared to his non-throwing arm. This is typical of throwers acording to his Physical Therapist. Also he has been doing Jaeger bands 3 times a week for 2 years now and they are great for the rotator cuff, but don't do...

I remember the part the article a little. Is internal rotation lack of ROM just referencing a static stretch comparison or you're mentioning? Or is their something when those pitchers throw that show an issue too. I have read about pitchers having the issue your son is having, but I have not heard of any issues in the actual pitching motion. Similar to how I talk external rotation. You can see the level of external rotation you achieve. Is there something that you can see when you look at...

I am not sure of a way to tell in the actual throwing motion. I am just a dad and know very little about this. The PT showed his lack of IR by comparing his IR via the Sleeper Stretch on both sides. His throwing side would not rotate without his shoulder blade moving forward with it. He had done normal stuff (only 14) not heavy lifting. Pushups and light weights etc.. Unfortunately if your scapular muscles are not activating then instead of these exercises making them stronger your body...

If you're interested in finding exercises to work those muscles you can search http://exrx.net/ . A great resource for anything related to working out. And free too. That's the best part. Also check out the body map here http://exrx.net/Lists/WtMale.html You click on the areas of the body that you want to find workouts for and it will show you stuff that you can do. If you are having him do push-ups, then you can add other body weight exercises to work the upper body as well. Pull ups and...

Anybody want to take a guess on how many baseball players I've stretched into external rotation of the shoulder? Volleyball hitters? That's right--- Exactly ZERO. They already have excessive ER and by stretching it, all I would do is stress the already stressed joint..

Not everyone has excessive or complete external rotation nor am I promoting static stretching of it. Or any type of stretching. My article talks improving arm action so external rotatiom(that naturally occurs)can happen. I don't really understand the purpose of your post and it seems kind of combative. If you have seething to add to the conversation, please do. But please add comments that relate to the topic on hand. Thanks!