Abstract

evaluated before treatment and at 3-months follow-up using a visual analog scale scoring system (VAS). Results: Average VAS scores before treatment and at the 3-month follow-up were 3.8 and 1.4 in the unilateral-pain group, and 4.9 and 2.9 in the center-pain group, respectively. Both groups reported a significant reduction in pain. At the 3-month follow-up, the mean improvement rate of VAS was 77% in the unilateral-pain group and 33.5% in the center-pain group. The improvement rate of VAS in the unilateral-pain group was significantly decreased compared with the centerpain group (p< 0.05). Conclusion(s): This study showed that, overall, physical therapy reduced pain in patients with CLBP. In addition, the unilateral-pain CLBP patients showed significantly more improvement in pain reduction than center-pain patients. Therefore, the results of this study suggest that CLBPpatients with unilateral low back painmay benefit more from physical therapy than those with center low back pain. In conclusion, this study reveals that the response to physical therapy for CLBP varies according to pain location. Future clinical trials using differential physical therapy should be performed to investigate the effect of physical therapy on CLBP patients with centered and unilateral pain. Implications: A better understanding of the differential effects of physical therapy on CLBP patients based on pain locationmight lead to better treatments of this common problem.

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