Oh Jong-Chi, Kwon Jae-Sung
Folia Phoniatr Logop. 2018;70(3-4):101-108. doi: 10.1159/000491082. Epub 2018 Aug 8.
The effect of a resistive jaw-opening exercise using an elastic band on suprahyoid muscle activity and tongue strength was examined in healthy volunteers.
Twenty-one adults wore an elastic loop around their head and mandible. To prescribe the appropriate elastic band resistance, the 10-repetition maximum (10 RM) was measured among 4 bands at baseline. Band loops, starting with the highest resistance value band, were sequentially applied to determine the suitability for 10 RM. During the exercise, the participants were required to open their jaw maximally and maintain the position for 10 s; then, they rested for 10 s. This procedure was repeated for 20 min, 3 days per week for 8 weeks to test suprahyoid muscle activation during effortful swallowing; isometric tongue pressures of the tongue tip and base at baseline, after 4, and after 8 weeks of training were measured.
Peak suprahyoid muscle activation amplitudes during effortful swallow and isometric pressures at the tongue tip significantly increased after 8 weeks.
The 8-week resistive jaw-opening exercise significantly improved strength of the suprahyoid muscle and tongue pressures in healthy subjects. These positive results warrant further investigation of the therapeutic effects and feasibility of this resistive exercise.
在健康志愿者中研究使用弹力带进行抗阻张口训练对舌骨上肌群活动及舌肌力量的影响。
21名成年人在头部和下颌佩戴弹力圈。为确定合适的弹力带阻力，在基线时对4种弹力带测量10次重复最大值（10RM）。从阻力值最高的弹力带开始，依次应用弹力带圈以确定其是否适合10RM。训练过程中，参与者需最大限度张开下颌并保持该姿势10秒；然后，休息10秒。此过程重复20分钟，每周3天，共8周，以测试用力吞咽时舌骨上肌群的激活情况；测量训练前、训练4周后和8周后舌尖和舌根的等长舌压。
8周后，用力吞咽时舌骨上肌群的峰值激活幅度及舌尖等长压力显著增加。
为期8周的抗阻张口训练显著提高了健康受试者舌骨上肌群的力量和舌压。这些积极结果值得进一步研究这种抗阻训练的治疗效果和可行性。
