Oh, look what I just found in the literature. More scientists that are convinced the role of the diaphragm is very important. Dit not saw this study before though but again dr. Macklem is cited. The research on stuttering by dr. Mackelm is carried out solid. They emphasize the role of the diaphragm. They don't talk about a remission/C-Word for everyone. That was never the message. But you can imagine that this research, combined with: 1. all the stories of people who went to this clinic and say they are in remission for many years and still experience they are fluent 2. The major big health insurance companies covering 100% of the costs because they checked this ex-stutterers to see if they were truly free of stutters - which they were. 3. the fact that the institute is more then 30 years old and on TV shows every year because of the results. 4. the fact that a big German TV reportage was made on the long term results (more then 10 years) of people who went to the clinic years and years ago and proved to be fluent speakers. On of them is now a doctor herself, whereas doctors would never make promotion for a method that would condisered to be somewhat faulty and being a big scam. ..would at least make people want to try it themselves as well. And to add that I actually found some extra research from who I didnt know of. This is additional research so I am not repeating or spamming in my opinion.This is debating full stop. One of the innovative investigations has come from **Kaya (1999)** who has been studying the benefits of abdominal and respiratory exercises as part of the multimodal intervention for stuttering.Control and smooth coordination of the abdominal and respira- tory muscles are essential in the regulation of speech. During normal conversational speech, the respiratory muscles, automatically, in a coordinated way, control pressure across the vocal cords, namely the difference between subglottic and atmospheric pressure, to keep the subglottic pressure constant. A complex and precise interaction among respiratory muscle groups is necessary to achieve this degree of con- trol. Failure to properly coordinate these muscles severely disrupts the normal pattern of speech (**Zocchi et al., 1990**). Kaya (1999) found diaphragmatic movements of stutterers, while speaking, to be rela- tively diminished compared to the diaphragmatic movements (moves 1.5 to 7.0 cm) of normal speakers. **Johnston, Yan, Sliwinski, and Macklem (1999**) used magnetometry to study pleural and abdominal activities during speech in normal speakers and moderate-to-severe stutterers. They found stutterers to use a different pattern of respi- ratory muscle recruitment and, thus, they were unable to achieve an appropriate degree of recruitment for developing and maintaining a normal subglottic pressure for conversational speech. This failure to control subglottic pressure during conversation leads to dysfluency in stutterers. While normal speech requires coordinated action, stutterers’ speech is characterized by variable subglottic pressure due to a lack of respiratory muscle coordination (Johnston et al., 1999). Zocchi et al. (1990) studied respiratory muscle incoordination during normal and stuttering speech. They found, in contrast to relatively constant sub- glottic pressure during normal conversational speech, stuttering speech to be characterized by a failure to control subglottic pressure because of contraction of the diaphragm, the rib cage, and the abdominal muscles, singly or in various combinations. As a result, subglottic pressure varies substantially, and sometimes chaotically, from too high to too low, ren- dering normal speech impossible. During periods of fluency, however, the subglottic pressure is much better controlled. From these findings, Zocchi et al. concluded that the incoordination of the respiratory mus- cles is a major problem in stuttering, resulting in failure to control the pressure difference across the vocal cord. Kaya (2003) observed that speech activation in normal individuals starts from the diaphragm, while in stutterers this action starts with the mouth muscles, thus interfering with the proper flow of speech. Johnston et al. (1999) had also observed inactivity of the diaphragm and the lack of coordina- tion with the respiratory muscles and impaired speech. These authors therefore recommend strengthening and training of the diaphragm and respiratory muscles for 2 hours daily to improve speech. **Similarly, Huinck et al. (2006)** suggest extra time for speech training when treating severe stutters. ​ Based on these findings, Kaya (1999) stresses the importance of diaphragmatic training in the treatment of stuttering. He considers any form of treatment for stuttering, including hypnosis, inadequate and restrictive if it does not include diaphragmatic training.