Effects of age and gender on swallowing activity assessed by electromyography and laryngeal elevation
Effects of age and gender on swallowing activity assessed by electromyography and laryngeal elevation
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DOI：
10.1111/joor.13089
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发表时间：
2020-09-20
影响因子：
2.9
通讯作者：
Ino, Shuichi
中科院分区：
文献类型：
--
作者：
Endo, Hiroshi;Ohmori, Nobuyuki;Ino, Shuichi
背景吞咽功能的定量评估是预防老年吞咽障碍的必要手段。虽然表面肌电信号(EMG)已被广泛用于测量吞咽活动，但其结果与吞咽功能之间的关系尚不清楚。目的探讨吞咽时肌肉活动的时间特征与喉头抬高的关系。方法本研究分析了60名健康志愿者，他们分为两个年龄组(年轻人，年龄在20-38岁之间；老年人，年龄在65-75岁之间)，每组都有相同数量的男性和女性参与者。记录舌骨上肌群和舌骨下肌群的表面肌电信号(SH-EMG和IH-EMG)。使用一组压力传感器测量了LE。参与者在三种吞咽速度条件下吞咽了3毫升水：快速吞咽、正常吞咽和缓慢吞咽。分析LE发作前后的肌电时程、LE前、后间期及LE血流速度。结果老年组的肌电持续时间和IH-EMG后间期均明显延长。在性别效应方面，男性SH-EMG的LE前间期明显长于女性，LE速度明显高于女性。此外，在快速吞咽状态下，LE前间期与LE速度呈负相关。结论虽然增龄使肌肉活动时间略有延长，但性别对吞咽活动的影响更为复杂。因此，在检查随年龄增长的吞咽功能时，考虑性别是很重要的。
Background Quantitative assessment of swallowing function is necessary to prevent swallowing impairment due to ageing. Though surface electromyography (EMG) has been widely used to measure swallowing activity, the relationship between EMG results and swallowing function is unclear. Objective This study examined the relationship between the temporal characteristics of muscle activity and laryngeal elevation (LE) during swallowing. Methods This study analysed 60 healthy volunteers in two age groups (young, between 20 and 38 years; old, between 65 and 75 years), each containing the same number of male and female participants. Surface EMG signals were recorded from the suprahyoid and infrahyoid muscle groups (SH-EMG and IH-EMG, respectively). LE was measured using an array of pressure sensors. The participants swallowed 3 mL of water under three swallowing speed conditions: fast, normal and slow swallowing. The EMG duration, EMG time intervals before and after the onset of LE (pre-LE and post-LE intervals, respectively), and the LE velocity were analysed. Results Both EMG duration and the post-LE interval of IH-EMG were significantly longer in the older group. As for the gender effect, the pre-LE interval of SH-EMG was significantly longer and the LE velocity was significantly higher in men than in women. Furthermore, there was a negative correlation between pre-LE interval and LE velocity in the fast swallowing condition. Conclusion Though ageing slightly prolonged the muscle activity time, gender influenced swallowing activity in a more complex manner. Therefore, it is important to take gender into account when examining swallowing function with increasing age.