I would be very interested in hearing from therapists working with breathing retraning, accent method and what studies are out there to support this work.
I should have specified. I am a speech therapist specialising in voice. So I am aware of the importance of breath for voice. I was wondering more aout laryngeal 'settings' and positions with different breathing patterns i.e upper chest versus diaphragmatic, redcued support and increased muscle tone due to neurological damage and so on.
you m pooright want to look at Jenny Iwarsons research published in the Journal of Voice in the mid 1990s. In addition Christine Sapienza and her research group have numerous articles regarding respiratory trainers in multiple voice conditions. I believe at ASHA this last year they presented some data and functional voice disorders. I research functional dysphonia and always include respiratory measures. It is difficult to separate laryngeal tension from poor laryngeal support because of poor respiratory control.