Abstract
The Laryngopharyngeal reflux is high incidence, accounting for 20% of patients who visit a voice center, and has a great impact on the quality of life of professional voice users. Therefore the purpose of this study was to investigate the aerodynamic characteristics at the sentence level of professional voice users diagnosed with LPR. The subjects were 31 patients diagnosed with LRP by an otolaryngologist. In addition, we used the Phonatory Aerodynamic System to examine the results of protocols related to vital capacity and running speech according to the severity of pharyngeal reflux, and SPSS was used for statistical analysis. As a result, the vital capacity-related expiratory volume was lower in patients with RSI > 13 but higher than that in running speech-related expiratory volume (P <.05). Therefore, the more severe laryngopharyngeal reflux, the lower the acoustic efficiency during speech.
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