Ko Min-Joo, Jung Eun-Joo, Kim Moon-Hwan, Oh Jae-Seop
Department of Rehabilitation Science, Graduate School, Inje University, Republic of Korea.
Department of Physical Therapy, Graduate School, Inje University, Republic of Korea.
J Phys Ther Sci. 2018 Apr;30(4):504-506. doi: 10.1589/jpts.30.504. Epub 2018 Apr 13.
[Purpose] This study was to investigate differences in the level of activity of the external oblique (EO), internal oblique (IO), and multifidus (MF) muscles with deep breathing in three sitting postures. [Subjects and Methods] Sixteen healthy women were recruited. The muscle activity (EO, IO, MF) of all subjects was measured in three sitting postures (slumped, thoracic upright, and lumbo-pelvic upright sitting postures) using surface electromyography. The activity of the same muscles was then remeasured in the three sitting postures during deep breathing. [Results] Deep breathing significantly increased activity in the EO, IO, and MF compared with normal breathing. Comparing postures, the activity of the MF and IO muscles was highest in the lumbo-pelvic upright sitting posture. [Conclusion] An lumbo-pelvic upright sitting posture with deep breathing could increase IO and MF muscle activity, thus improving lumbo-pelvic region stability.
[目的]本研究旨在调查三种坐姿下深呼吸时腹外斜肌（EO）、腹内斜肌（IO）和多裂肌（MF）的活动水平差异。[对象与方法]招募了16名健康女性。使用表面肌电图在三种坐姿（ slumped位、胸段直立位和腰骨盆直立位）下测量所有受试者的肌肉活动（EO、IO、MF）。然后在深呼吸时再次在三种坐姿下测量相同肌肉的活动。[结果]与正常呼吸相比，深呼吸显著增加了EO、IO和MF的活动。比较不同姿势，MF和IO肌肉的活动在腰骨盆直立坐姿时最高。[结论]深呼吸时的腰骨盆直立坐姿可增加IO和MF肌肉活动，从而提高腰骨盆区域的稳定性。
