Lee Su-Kyoung, Park Du-Jin
Department of Physical Therapy, Gimhae College.
J Phys Ther Sci. 2013 Jul;25(7):857-60. doi: 10.1589/jpts.25.857. Epub 2013 Aug 20.
[Purpose] The purpose of this study was to examine the effects of the flexion angle of the knee joint and the abduction angle of the hip joint on the activation of the cervical region and abdominal muscles. [Subjects] A total of 42 subjects were enrolled 9 males and 33 females. [Methods] The bridging exercise in this study was one form of exercise with a knee joint flexion angle of 90°. Based on this, a bridging exercise was conducted at the postures of abduction of the lower extremities at 0, 5, 10, and 15°. [Result] The changes in the knee joint angle and the hip abduction angle exhibited statistically significant effects on the cervical erector spinae, adductor magnus, and gluteus medius muscles. The abduction angles did not result in statistically significant effects on the upper trapezium, erector spinae, external oblique, and rectus abdominis muscles. However, in relation to the knee joint angles, during the bridging exercise, statistically significant results were exhibited. [Conclusion] When patients with both cervical and back pain do a bridging exercise, widening the knee joint angle would reduce cervical and shoulder muscle activity through minimal levels of abduction, permitting trunk muscle strengthening with reduced cervical muscle activity. This method would be helpful for strengthening trunk muscles in a selective manner.
[目的]本研究旨在探讨膝关节屈曲角度和髋关节外展角度对颈部和腹部肌肉激活的影响。[对象]共纳入42名受试者，其中男性9名，女性33名。[方法]本研究中的桥接运动是膝关节屈曲角度为90°的一种运动形式。在此基础上，在下肢外展0°、5°、10°和15°的姿势下进行桥接运动。[结果]膝关节角度和髋关节外展角度的变化对颈部竖脊肌、大收肌和臀中肌有统计学显著影响。外展角度对上斜方肌、竖脊肌、腹外斜肌和腹直肌没有统计学显著影响。然而，关于膝关节角度，在桥接运动期间显示出统计学显著结果。[结论]当患有颈部和背部疼痛的患者进行桥接运动时，通过最小程度的外展来扩大膝关节角度将减少颈部和肩部肌肉活动，从而在减少颈部肌肉活动的情况下增强躯干肌肉。这种方法将有助于选择性地增强躯干肌肉。
