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Old 12-04-2013, 05:39 AM   #16
Chas Tennis
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Join Date: Feb 2011
Location: Baltimore, MD
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Study the shoulder and beware especially of impingement issues. The information in this video describes the shoulder and especially impingement risk during serving. There are light shoulder conditioning exercises such as the Thrower's 10 that strengthen the muscles and help the range of motion.

Quote:
Originally Posted by Chas Tennis View Post
I believe that serving with ISR is never forced and could cause injury if practiced incorrectly. Here are some known issues. With forceful and rapid ISR the small external shoulder rotator cuff muscles have to be conditioned to keep the ball of the humerus in place and to stop the arm rotation in the follow through. See recommended shoulder conditioning exercises. Easy, light exercises.

There are also the important safety issues related to technique such as the shoulder high orientation for the serve to minimize impingement risk. Just one very bad motion can cause injury.

1) Jim McLennan short video on the rotator cuff, impingement and serving
http://www.youtube.com/watch?v=lTRvxaBMh8s

2) Todd Ellenbecker video on shoulder anatomy, impingement, and serving. At about minute 8 he describes the same issue as McLennan but in more detail.
http://www.tennisresources.com/index...2&ATT=&reso=lo

If you are concerned because you are having pain, how can you determine that the technique that you use is OK? You have to study and know the proper technique and verify that you are doing it with high speed video or find a well qualified instructor. Keep in mind that the more rapid motions during the serve cannot be seen by eye or even 60 fps video so an instructor who uses HSV is a plus.
You cannot tell exactly what you are doing on the serve without high speed video.

Research the most basic service motion which is the same for any height. Racket head speed is not mostly produced by "forearm pronation" but internal shoulder rotation.

Raonic has an interesting and very strong serve.
https://vimeo.com/user6237669/videos/page:3/sort:date

Sampras video
Quote:
Originally Posted by Chas Tennis View Post
Here is a nice view showing some phases of the serve.

Pete Sampras Serve in Slow Motion
http://www.youtube.com/watch?v=jBv4WjGQWFQ

Leg thrust.
Racket + forearm rotate back with external shoulder rotation joint motion.
Racket angle to forearm drops back & racket raches nearest to 'Back Scratch. Upper body motions.
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Leg kicks back up behind.
Work with a well-qualified instructor.

Last edited by Chas Tennis : 12-04-2013 at 05:53 AM.
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