Effects of sitting posture and bolus volume on activation of swallowing-related muscles
Effects of sitting posture and bolus volume on activation of swallowing-related muscles
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DOI：
10.1111/joor.12934
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发表时间：
2020-01-23
影响因子：
2.9
通讯作者：
Yong, Joon-Hyoung
中科院分区：
文献类型：
--
作者：
Moon, Il-Young;Yi, Chung-Hwi;Yong, Joon-Hyoung
背景咽期是影响吞咽功能障碍的一个重要临床因素。头部和颈部的姿势，以及丸量，是影响正常吞咽的咽部阶段的重要因素。目的探讨坐姿和吞咽剂量对吞咽相关肌活动的影响。材料与方法24名受试者参加了研究。受试者被定位在三个坐姿--瘫坐（SS）、腰骨盆直立坐姿（LUS）和胸直立坐姿（TUS）。当受试者坐在椅子上时，指导其吞咽10和20 mL水。表面肌电图（EMG）用于测量舌骨上（SH）和舌骨下（IH）肌肉活动。此外，还进行了坐姿调整（头部、颈部和肩部角度）。使用广义线性模型，采用重复测量方差分析（RMANOVA）对数据进行分析。结果在头角方面无显著差异（P = 0.395）。然而，在颈角（P <0.001）和肩角（P <0.001）方面存在显著差异。与SS和LUS相比，TUS产生最低的SH EMG活性（P = .001）。20 mL的团注体积比10 mL的团注体积显示出更大的SH和IH EMG活性（P <0.001）。结论将坐姿从SS纠正为TUS可以更好地帮助吞咽相关肌肉，而不考虑丸剂体积。
Background The pharyngeal phase is a particularly important clinical factor related to swallowing dysfunctions. Head and neck posture, as well as bolus volume, are important factors affecting the pharyngeal stages of normal swallowing. Objective The aim of our study was to identify the effects of sitting posture and bolus volume on the activation of swallowing-related muscles. Materials and Methods Twenty-four subjects participated in the study. The subjects were positioned in three sitting postures-slump sitting (SS), lumbo-pelvic upright sitting (LUS), and thoracic upright sitting (TUS). While sitting in the chair, the subject was instructed to swallow 10 and 20 mL of water. Surface electromyography (EMG) was used to measure the muscle activity of the supra-hyoid (SH) and infra-hyoid (IH) muscles. Also, sitting posture alignment (head, cervical and shoulder angle) was also performed. Data were analysed with a repeated measures analysis of variance (RMANOVA) using a generalised linear model. Results There was no significant difference in terms of the head angle (P = .395). However, significant differences were found in relation to the cervical angle (P < .001) and shoulder angle (P < .001). The TUS produced the lowest SH EMG activity (P = .001), in comparison to SS and LUS. The bolus volume for 20 mL showed greater SH and IH EMG activity (P < .001) than did the bolus volume for 10 mL. Conclusions Correcting sitting posture from SS to TUS may better assist swallowing-related muscles with less effort, irrespective of the bolus volume.