Department of Rehabilitation Medicine, School of Medicine, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi, 470-1192, Japan.
Department of Rehabilitation, Fujita Health University Bantane Hospital, Nagoya, Japan.
Dysphagia. 2021 Oct;36(5):936-943. doi: 10.1007/s00455-020-10217-9. Epub 2021 Jan 1.
Tongue-hold swallow (THS) is a swallow exercise in which an individual swallows saliva while holding the anterior portion of the tongue between the front teeth. The effect of THS on pharyngeal contractile vigor is still unclear. The purpose of this study was to quantify THS using high-resolution manometry with a contractile integral analysis. Twenty-two healthy participants performed three different saliva swallow tasks: normal swallow, weak THS (in which the tongue was protruded 1 cm outside the upper incisors), and strong THS (in which the tongue was protruded 2 cm outside the upper incisors). The participants repeated each task twice randomly. Pharyngeal and upper esophageal sphincter metrics, including the pharyngeal contractile integral, were analyzed. Both weak and strong THS enhanced the velopharyngeal contractile integral and peak pressure compared with normal swallow (P < 0.01). THS also prolonged mesopharyngeal contraction (P < 0.01). Holding the tongue anteriorly during swallow requires significant biomechanical changes to pharyngeal contractile properties at the superior and middle pharyngeal constrictor levels; thus, it may serve as a resistance exercise for the muscles that are involved in bolus propulsion.
舌抵吞咽（tongue-hold swallow，THS）是一种吞咽动作，个体在吞咽唾液时将舌前部置于上门齿之间。THS 对咽收缩力的影响尚不清楚。本研究旨在使用具有收缩积分分析的高分辨率测压法对 THS 进行定量分析。22 名健康参与者进行了 3 种不同的唾液吞咽任务：正常吞咽、弱 THS（舌伸出上门齿 1cm 外）和强 THS（舌伸出上门齿 2cm 外）。参与者随机重复每种任务 2 次。分析了咽和食管上括约肌的指标，包括咽收缩积分。与正常吞咽相比，弱 THS 和强 THS 均增强了软腭咽收缩积分和峰值压力（P<0.01）。THS 还延长了中咽收缩（P<0.01）。吞咽时将舌置于前部需要对上咽和中咽缩肌水平的咽收缩特性进行显著的生物力学改变，因此，它可能成为用于推进食团的肌肉的抗阻运动。
