[Purpose] This study aimed to observe the changes in the thickness of the transverse abdominis muscle after long-term training with a new device using ultrasound imaging and to determine the impact of these changes on chronic low back pain (CLBP). [Participants and Methods] This study included 60 participants with CLBP, who were divided into groups that adopted different positions during the training regimen: new device intervention group (NDG), sitting training group (STG), and supine training group (SPTG). Patients in the NDG used the new device during training. We measured the thickness of the transverse abdominis muscle and determined the pain level using the visual analog scale (VAS). [Results] After 8 weeks of training, the thickness of the transverse abdominis muscle changed in all the three groups, with the change being significantly greater in the NDG than in the other groups. Additionally, the VAS results indicated that the pain relief was highest when the new device was used. [Conclusion] The thickness of the transverse abdominis muscle increased the most in patients who were trained with the new interventional device, and the CLBP was significantly relieved in them.
Keywords: Chronic low back pain (CLBP); New device; Transverse abdominis muscle.
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