Hirosawa Akira, Kakizaki Fujiyasu, Komuro Naruyoshi, Homma Yuuki, Omotehara Takuya, Kawata Shinichi, Nagahori Kenta, Yakura Tomiko, Li Zhong-Lian, Itoh Masahiro
Department of Anatomy, Tokyo Medical University, Japan.
Department of Rehabilitation, Takashimadaira Chuo General Hospital, Japan.
J Phys Ther Sci. 2023 Mar;35(3):185-192. doi: 10.1589/jpts.35.185. Epub 2023 Mar 1.
[Purpose] This study aimed to determine the relationship between thoracic lateral deviation, the bilateral ratio of the thoracic shape, and the bilateral ratio of the thoracic and lumbar iliocostalis muscles during resting sitting and thoracic lateral translation. [Participants and Methods] We included 23 healthy adult males in the study. The measurement tasks were resting sitting and thoracic lateral translation relative to the pelvis. The thoracic lateral deviation and bilateral ratio of the upper and lower thoracic shapes were measured using three-dimensional motion capture. The bilateral ratio of the thoracic and lumbar iliocostalis muscles were measured using the surface electromyographic recording. [Results] The bilateral ratio of the lower thoracic shape was significantly positively correlated with the thoracic translation distance and the bilateral ratio of the thoracic and iliocostalis muscles. In addition, the bilateral ratio of the thoracic iliocostalis muscles was significantly negatively correlated with the bilateral ratios of the lower thoracic shape and lumbar iliocostalis muscles. [Conclusion] Our findings showed that the asymmetry of the lower thoracic shape is associated with left lateral deviation of the thorax at rest and thoracic translation distance. In addition, the thoracic and lumbar iliocostalis muscle activity differed between the left and right translations.
[目的] 本研究旨在确定静息坐位和胸部侧方平移过程中胸段侧方偏移、胸廓形状的双侧比例以及胸腰髂肋肌的双侧比例之间的关系。[参与者与方法] 本研究纳入了23名健康成年男性。测量任务为相对于骨盆的静息坐位和胸部侧方平移。使用三维运动捕捉测量胸段侧方偏移和上下胸廓形状的双侧比例。使用表面肌电图记录测量胸腰髂肋肌的双侧比例。[结果] 下胸廓形状的双侧比例与胸部平移距离以及胸髂肋肌的双侧比例显著正相关。此外，胸髂肋肌的双侧比例与下胸廓形状和腰髂肋肌的双侧比例显著负相关。[结论] 我们的研究结果表明，下胸廓形状的不对称与静息时胸廓的左侧偏移和胸部平移距离相关。此外，左右平移时胸腰髂肋肌的活动存在差异。
