Saw the recent thread by Dawgilama (and the exchange of ideas with Eight and Akash on the topic), and thought this 2011 thread started by Chroma concerning the role of upper body postural and respiratory dysfunction in the development of TOS might be of some interest to you guys.
The writing style of this Canadian blogger/technical writer keeps it entertaining and, with his background I think, informative at the same time. Makes me think I need breathing lessons, I know that! But I'd probably settle for some vocal coaching, in a pinch…
Alison