Bernie Inakayak wrote:

And you've correctly identified that I am a little worried about this
sort of thing, since I read an article about preventing shoulder
injuries, where the author said this rolling up off the bottom is one
way to dislocate a shoulder.

I'm quite sure it is. OTOH, when I do a punt/pole roll I'm on autopilot
and I doubt I'm alone, and furthermore the case that while a dislocated
shoulder would be Very Bad, it's not nearly as Very Bad as breathing
seawater would be ;-/

He said he would write another article
about how to prevent that, but it hasn't appeared yet. I really really
don't want to dislocate a shoulder.

My take on how not to do that... practice practice practice, while
keeping a close eye on your shoulders. I've not dislocated one yet
(touch formica) but it was the case that early on in my rolling career
when I tended to use more brute force and ignorance than technique I did
strain some muscles in my right shoulder and had to lay off the pool
sessions for a while. As I've got more experienced I very clearly use
less power and more technique, which will help those shoulders stay
where they're meant to be.

My "rolls in anger" have not been as good as my pre-setup practice
rolls, not surprisingly. But they're still much better than they were.
The longer I'm under and the closer to bailing out I feel I am the
sloppier the technique tends to be, which is also not hugely surprising...

Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net http://www.dundee.ac.uk/~pjclinch/