Department of Rehabilitation Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
Gerontology. 2010;56(5):474-82. doi: 10.1159/000274517. Epub 2010 Jan 8.
The age-related effects on various aspects of swallowing have been reported in studies on the temporal relationship between hyolaryngeal movement and bolus location, as well as the extent of hyolaryngeal movement. However, few studies have described the temporal and spatial relationships concurrently.
The main purpose of this study was to define the kinematics of the hyoid bone and epiglottis, during swallowing, on the temporal and spatial relationships concurrently in healthy subjects, and to investigate the influence of aging on hyolaryngeal movement.
We performed a two-dimensional motion analysis of the hyoid bone and epiglottis using videofluoroscopy images in 69 normal subjects. The trajectories of the hyolaryngeal movement and passage of a bolus were superimposed to form one plot. Temporal measurements included initiation and duration of the hyoid bone and epiglottis movement compared to their movement with the bolus. The spatial measurements included vertical and horizontal excursion of the hyoid bone, and the rotational angle of the epiglottis.
The duration of supraglottis closure, and the maximal vertical excursion of the hyoid bone were increased in older subjects, more than 65 years of age, compared to younger subjects (p<0.05). Other temporal and spatial measurements were not statistically significant in the comparisons among the age groups. The vertical distance of the cervical vertebra was related to vertical excursion of the hyoid bone (p=0.002), and the horizontal distance from the chin to the cervical vertebra was related to the horizontal excursion of the hyoid bone (p=0.003).
This paper describes a method for assessing temporal and spatial relationships of hyolaryngeal movement, and the passage of a bolus during swallowing. The two-dimensional kinematic swallowing motion analyses that were developed provided useful data that changed with age.
在研究舌骨和会厌的运动时间关系以及舌骨运动幅度与食团位置关系的研究中，已经报道了年龄对吞咽各个方面的影响。然而，很少有研究同时描述时间和空间关系。
本研究的主要目的是定义健康受试者在吞咽过程中舌骨和会厌的运动轨迹，同时描述时间和空间关系，并研究年龄对舌骨-喉运动的影响。
我们使用透视视频图像对 69 名正常受试者的舌骨和会厌进行二维运动分析。将舌骨-喉运动轨迹和食团通过轨迹叠加在一个图上。时间测量包括舌骨和会厌运动与食团运动的起始时间和持续时间。空间测量包括舌骨的垂直和水平运动以及会厌的旋转角度。
与年轻受试者相比，年龄超过 65 岁的老年受试者的会厌闭合持续时间和舌骨最大垂直运动幅度增加（p<0.05）。在年龄组之间的比较中，其他时间和空间测量值没有统计学意义。颈椎的垂直距离与舌骨的垂直运动幅度有关（p=0.002），从下巴到颈椎的水平距离与舌骨的水平运动幅度有关（p=0.003）。
本文描述了一种评估吞咽过程中舌骨-喉运动和食团通过的时间和空间关系的方法。所开发的二维运动分析为年龄变化提供了有用的数据。
