Yanagisawa Yukio, Matsuo Yoshimi, Shuntoh Hisato, Mitamura Masaaki, Horiuchi Noriaki
Department of Rehabilitation, Health Insurance Naruto Hospital ; Graduate School of Rehabilitation, Kobe Gakuin University.
J Phys Ther Sci. 2013 Jun;25(6):667-9. doi: 10.1589/jpts.25.667. Epub 2013 Jul 23.
[Purpose] The purpose of this study was to investigate the effect of expiratory resistance load on the tongue area encompassing the suprahyoid and genioglossus muscles. [Subjects] The subjects were 30 healthy individuals (15 males, 15 females, mean age: 28.9 years). [Methods] Magnetic resonance imaging was used to investigate morphological changes in response to resistive expiratory pressure loading in the area encompassing the suprahyoid and genioglossus muscles. Images were taken when water pressure was sustained at 0%, 10%, 30%, and 50% of maximum resistive expiratory pressure. We then measured tongue area using image analysis software, and the morphological changes were analyzed using repeated measures analysis of variance followed by post hoc comparisons. [Results] A significant change in the tongue area was detected in both sexes upon loading. Multiple comparison analysis revealed further significant differences in tongue area as well as changes in tongue area in response to the different expiratory pressures. [Conclusion] The findings demonstrate that higher expiratory pressure facilitates greater reduction in tongue area.
[目的]本研究旨在探讨呼气阻力负荷对包含舌骨上肌和颏舌肌的舌部区域的影响。[对象]研究对象为30名健康个体（男性15名，女性15名，平均年龄：28.9岁）。[方法]采用磁共振成像技术，研究舌骨上肌和颏舌肌所在区域在呼气阻力压力负荷下的形态变化。在呼气阻力最大压力的0%、10%、30%和50%时持续水压，并拍摄图像。然后使用图像分析软件测量舌部面积，并采用重复测量方差分析及事后比较对形态变化进行分析。[结果]负荷时，男女舌部面积均有显著变化。多重比较分析显示，舌部面积存在进一步显著差异，且舌部面积随不同呼气压力而变化。[结论]研究结果表明，较高的呼气压力有助于舌部面积更大程度地减小。
