Yoo Won-Gyu
Department of Physical Therapy, College of Biomedical Science and Engineering, Inje University, Republic of Korea.
J Phys Ther Sci. 2017 Jun;29(6):1043-1044. doi: 10.1589/jpts.29.1043. Epub 2017 Jun 7.
[Purpose] This study examined the activation of the rhomboid muscle according to the angle of the arm. [Subjects and Methods] The current study was conducted on 15 healthy males. The participants performed the pulling exercise in 5 conditions. The surface electromyography system was used to measure the muscle activities of the rhomboid and upper trapezius. [Results] The activity of the upper trapezius in condition 5 was significantly increased compared to that in condition 4. The activity of the rhomboid in condition 4 was significantly increased compared to that in conditions 1 and 5. [Conclusion] This study showed that performing a pulling exercise with the arms raised above the head (shoulder flexion at 120°) is more effective for reducing upper trapezius tension, while also selectively strengthening the rhomboid muscle.
[目的] 本研究根据手臂角度检测菱形肌的激活情况。[对象与方法] 本研究以15名健康男性为对象。参与者在5种条件下进行拉伸运动。使用表面肌电图系统测量菱形肌和上斜方肌的肌肉活动。[结果] 与条件4相比，条件5中上斜方肌的活动显著增加。与条件1和条件5相比，条件4中菱形肌的活动显著增加。[结论] 本研究表明，将手臂举过头顶（肩部屈曲120°）进行拉伸运动对于减轻上斜方肌的张力更有效，同时还能选择性地增强菱形肌。
