Ishida Hiroshi, Tajima Saya, Masuno Riyo, Kogame Yoshiko, Ando Suguru, Yokohata Katsuhiko, Watanabe Susumu
Department of Rehabilitation, Faculty of Health Science and Technology, Kawasaki University of Medical Welfare, Japan.
Department of Rehabilitation, Ishikawa Hospital, Japan.
J Phys Ther Sci. 2014 Dec;26(12):1919-21. doi: 10.1589/jpts.26.1919. Epub 2014 Dec 25.
[Purpose] The purpose of this study was to demonstrate the effects of expiration on abdominal muscle activity during maximum trunk flexion. [Subjects] Twenty-one healthy university students (10 men, 11 women) participated in this study. [Methods] Electromyography (EMG) was used to quantify the activity of the right rectus abdominis, external oblique, and internal oblique muscles. The paired t-test was used to examine the significance of differences in the abdominal muscles between maximum trunk flexion with breath holding and slow expiration. [Results] There was a significantly lower EMG activity in the external oblique muscle during maximum trunk flexion with slow expiration. [Conclusion] The results of this study indicate that slow expiration reduces external oblique muscle activity during maximum trunk flexion performed by healthy young subjects.
[目的]本研究旨在证明呼气对最大躯干屈曲时腹肌活动的影响。[对象]21名健康大学生（10名男性，11名女性）参与了本研究。[方法]采用肌电图（EMG）对右侧腹直肌、腹外斜肌和腹内斜肌的活动进行量化。配对t检验用于检验屏气时最大躯干屈曲与缓慢呼气时腹肌差异的显著性。[结果]在缓慢呼气时最大躯干屈曲过程中，腹外斜肌的肌电图活动显著降低。[结论]本研究结果表明，缓慢呼气可降低健康年轻受试者在最大躯干屈曲过程中的腹外斜肌活动。
