Chewing Well Modulates Pharyngeal Bolus Transit During Swallowing in Healthy Participants

被引：0

作者：

Okubo, Akira ^{[1
]}

Tsujimura, Takanori ^{[1
]}

Ueha, Rumi ^{[2
,3
]}

Suzuki, Taku ^{[1
]}

Tsutsui, Yuhei ^{[1
]}

Nakajima, Yuta ^{[1
]}

Saka, Nobuaki ^{[1
]}

Sasa, Anna ^{[1
]}

Takei, Eri ^{[1
]}

Magara, Jin ^{[1
]}

Inoue, Makoto ^{[1
]}

机构：

[1] Niigata Univ, Grad Sch Med & Dent Sci, Div Dysphagia Rehabil, 2-5274 Gakkocho Dori,Chuo Ku, Niigata 9518514, Japan

[2] Univ Tokyo Hosp, Swallowing Ctr, Tokyo 1138655, Japan

[3] Univ Tokyo, Dept Otolaryngol & Head & Neck Surg, Tokyo 1138655, Japan

来源：

DYSPHAGIA | 2024年 / 39卷 / 06期

基金：

日本学术振兴会;

关键词：

Chewing well; Deglutition; Deglutition disorders; Mastication; Mouthful volume; Pharyngeal transit time; STAGE-II TRANSPORT; FOOD TRANSPORT; VOLUME; REFLEX; MUSCLES; STIMULATION; MASTICATION; NUMBER; VISCOSITY; PRESSURE;

D O I：

10.1007/s00455-024-10689-z

中图分类号：

R76 [耳鼻咽喉科学];

学科分类号：

100213 ;

摘要：

Mastication is controlled by central pattern generator in the brainstem and can be modulated by volition. The aim of this study was to investigate the effect of chewing well on swallowing. Twenty-six healthy participants were instructed to eat 8, 12, and/or 16 g of steamed rice with barium sulphate under the following two conditions: chewing freely task (CF; chewing naturally in their usual manner) and chewing well task (CW; chewing the food with a request to "chew well"). We evaluated bolus transport and swallowing movement using videofluoroscopy and electromyography of the masseter, suprahyoid and thyrohyoid muscles. The chewing time and pharyngeal transit time (PTT) at the first swallow showed high reproducibility in both CF and CW. PTT for CW was significantly shorter and longer than CF in 12 and 16 g, respectively. In 12 g, CW increased the pharyngeal bolus velocity and decreased thyrohyoid EMG activity during swallowing compared with CF. In 16 g, the difference between CW and CF in the estimated swallowed bolus volume was positively correlated with that in upper esophageal sphincter transit duration. We speculate that CW modulates PTT during swallowing depending on the mouthful volume.

引用

页码：1112 / 1124

页数：13

共 42 条

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