Arab Amir Massoud, Shanbehzadeh Sanaz, Rasouli Omid, Amiri Mohsen, Ehsani Fatemeh
Department of Physiotherapy, University of Social Welfare and Rehabilitation Sciences, Evin, Tehran, Iran.
Department of Neuromedicine and Movement Science, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway; Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.
J Bodyw Mov Ther. 2018 Jul;22(3):627-631. doi: 10.1016/j.jbmt.2017.10.009. Epub 2017 Oct 25.
The purpose of this study was to assess muscle thickness changes in the deep and superficial abdominal muscles, during sitting on stable and unstable surfaces in subjects with and without chronic low back pain (CLBP).
A cross-sectional study was conducted involving 40 participants (20 CLBP and 20 healthy). Ultrasound imaging was used to assess changes in the thickness of the Transversus abdominis (TrA), Internal Oblique (IO), Rectus abdominis (RA) and External oblique (EO) muscles. Muscle thickness under two different sitting postures; (sitting on a chair and sitting on a Swiss ball), was normalized to actual muscle thickness at rest in the supine lying position and was expressed as a percentage of thickness change of muscles.
The results showed significantly greater thickness changes in RA muscle in the CLBP patients compared to the healthy subjects, during both stable and unstable sitting positions. Also, significantly lower thickness changes in TrA muscle was observed in subjects with CLBP compared to those without CLBP, during unstable sitting position.
There was an imbalance between the automatic activity of TrA and RA muscles in the subjects with CLBP, compared to the pain-free controls, during an unstable sitting position. Therefore, it is necessary to pay attention, to the altered automatic activity of the abdominal muscles while utilizing a Swiss ball, for rehabilitation of subjects with CLBP.
本研究旨在评估慢性下腰痛（CLBP）患者和非慢性下腰痛患者在稳定和不稳定表面上坐姿时腹深部和浅部肌肉厚度的变化。
进行了一项横断面研究，涉及40名参与者（20名CLBP患者和20名健康者）。使用超声成像评估腹横肌（TrA）、腹内斜肌（IO）、腹直肌（RA）和腹外斜肌（EO）的厚度变化。两种不同坐姿（坐在椅子上和坐在瑞士球上）下的肌肉厚度，相对于仰卧位休息时的实际肌肉厚度进行标准化，并表示为肌肉厚度变化的百分比。
结果显示，在稳定和不稳定坐姿期间，CLBP患者的RA肌肉厚度变化显著大于健康受试者。此外，在不稳定坐姿期间，与无CLBP的受试者相比，CLBP受试者的TrA肌肉厚度变化显著更低。
与无疼痛对照组相比，CLBP患者在不稳定坐姿期间TrA和RA肌肉的自动活动之间存在失衡。因此，在利用瑞士球对CLBP患者进行康复治疗时，有必要关注腹部肌肉自动活动的改变。
