矢状面颈部对线对口咽吞咽时下颌舌骨肌活动影响的初步研究：表面肌电图分析
A preliminary study of the influence of sagittal plane neck alignment on mylohyoid activity during oropharyngeal swallowing: A surface electromyographic analysis.
作者信息
Holland Thomas, Babyar Suzanne, Carroll Brianne, Hunt Sierra, Sheeleigh Albright Katherine, Wnukowski Mark
机构信息
Department of Physical Therapy, Hunter College, the City University of New York , New York, NY, USA.
出版信息
Cranio. 2020 Jan;38(1):43-49. doi: 10.1080/08869634.2018.1480149. Epub 2018 Jun 3.
OBJECTIVE
Forward head posture lengthens mylohyoid muscles, but its impact on swallowing is unknown. This study determined the effect of sagittal plane neck alignment on surface electromyographic parameters from mylohyoid muscles during oropharyngeal swallowing in healthy, young women.
METHODS
Surface EMG over bilateral mylohyoid muscles was recorded in 10 female subjects (22-37 , Mean = 30 (5.1)) for average peak amplitude (μV). Percent time to peak activity and duration [s] were recorded in three different sitting postures: habitual posture (HP), exaggerated forward head posture (FHP), and optimal posture (OP) with head positioned in alignment with the spine.
RESULTS
Paired -tests revealed that HP produced lower mylohyoid average peak amplitude than the FHP or OP. OP had greater average percent time to peak mylohyoid activity than HP.
DISCUSSION
HP yielded the most efficient mylohyoid activity. Muscle activation during swallowing should be addressed when training young women about OP.
目的
头部前倾姿势会拉长下颌舌骨肌，但它对吞咽的影响尚不清楚。本研究确定了矢状面颈部对线对健康年轻女性口咽吞咽过程中下颔舌骨肌表面肌电图参数的影响。
方法
记录了10名女性受试者（22 - 37岁，平均年龄 = 30（5.1）岁）双侧下颌舌骨肌表面肌电图的平均峰值幅度（μV）。在三种不同坐姿下记录达到峰值活动的时间百分比和持续时间[s]：习惯姿势（HP）、夸张的头部前倾姿势（FHP）以及头部与脊柱对齐的最佳姿势（OP）。
结果
配对检验显示，HP产生的下颌舌骨肌平均峰值幅度低于FHP或OP。OP达到下颌舌骨肌峰值活动的平均时间百分比高于HP。
讨论
HP产生了最有效的下颌舌骨肌活动。在对年轻女性进行最佳姿势训练时，应考虑吞咽过程中的肌肉激活情况。
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