Effect of Carbonated Water Swallowing Volume on the Acoustic Characteristics of Swallowing Sounds in Healthy Adult Subjects

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  • MARUYAMA Junya
    Division of Sciences and Technology, Tokushima University Graduate School
  • EMOTO Takahiro
    Graduate School of Technology, Industrial and Social Sciences, Tokushima University Graduate School
  • KIMURA Satoru
    Division of Sciences and Technology, Tokushima University Graduate School
  • SUZUKI Yoshitaka
    Department of Stomatognathic Function and Occlusal Reconstruction, Graduate School of Biomedical Sciences, Tokushima University
  • SHINKAI Mizuki
    Department of Stomatognathic Function and Occlusal Reconstruction, Graduate School of Biomedical Sciences, Tokushima University
  • SHIBAGAKI Akari
    Department of Stomatognathic Function and Occlusal Reconstruction, Graduate School of Biomedical Sciences, Tokushima University
  • MATSUKA Yoshizo
    Department of Stomatognathic Function and Occlusal Reconstruction, Graduate School of Biomedical Sciences, Tokushima University
  • SHICHIJO Fumio
    Department of Neurosurgery, Suzue Hospital

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Other Title
  • 成人健常者における炭酸水嚥下量が嚥下音の音響特性に与える影響
  • セイジンケンジョウシャ ニ オケル タンサンスイ エンゲリョウ ガ エンゲオン ノ オンキョウ トクセイ ニ アタエル エイキョウ

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<p>Carbonated beverage-based sensory stimulation affects swallowing movements and contributes to safe swallowing. Although the effects of carbonated beverages on swallowing movements have been reported using swallowing sounds, small amounts of swallowing have not been investigated. In this study, we extracted the acoustic characteristics from swallowing sounds acquired when 15 healthy adults swallowed 3mL, 5mL, and 10mL of water or carbonated water five times each. Consequently, we confirmed that the acoustic features of the swallowing sound in time domain, i.e., peak intensity and energy, marginally significantly reduced when swallowing carbonated water compared to water, regardless of the quantity. Even with a mouthful volume of 3mL of carbonated water, this trend was confirmed. Therefore, the potential evaluation of swallowing and rehabilitation through the swallowing of small amounts of carbonated water, which has a lower risk of aspiration for dysphagia, was considered.</p>

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