Do you have any supporting documentation/references/research articles on how the Breather improves hyo-laryngeal elevation/functioning?

Do you have any supporting documentation/references/research articles on how the Breather improves hyo-laryngeal elevation/functioning?

RMT, particularly of the expiratory muscles, has been shown to specifically improve hyolaryngeal function by increasing movement of the hyolaryngeal complex after 4 weeks of use.
In addition, assessment of muscle activity by surface EMG revealed that suprahyoid muscle activity is also improved by RMT.

Activation of these and related muscle groups by RMT using the Breather or other devices leads to improved penetration/aspiration scores and swallow efficiency, contributing to to improved pulmonary hygiene and reduced risk of aspiration pneumonia.