| Objective: To explore the clinical efficacy of resistance training in the treatment of chronic non-specific low back pain (CNLBP), to provide dose-response relationships of（resistance training，RT） variables and lumbar function improvement through analysis, and to find the parameter range that most significantly affects the results. Methods: Randomized controlled trials about RT for CNLBP were electronically searched in CKNI, VIP, Wanfang, pubMed, MEDLINE, Embase, Web of Science and Cochrane Central Register of Controlled Trials before Jan. 2022. After literature screening, data extraction, quality evaluation, the results of Meta-analysis, Meta-regression and subgroup analysis were conducted by Stata 14 software. Results: A total of 13 RCTs with 19 outcomes were included. RT had a significant effect on the improvement of lumbar function ［SMD=-1.01, 95%CI (-1.42,-0.60),P<0.01］. The number of times per group (P=0.026) had significant effects on functional improvement. The effect sizes were the most effective when the training number was 10-12 per group (SMD=-2.38), the training duration was 9-12 weeks (SMD=-1.68), the training frequency was 1-2 times/week (SMD=-1.08), the training group was 1 group (SMD=-1.96), the training time was 30~39 min (SMD=-0.89), the training intensity was more than 70%1RM (SMD=-2.12), and the rest between groups was 0-30 s (SMD=-0.92). Conclusion: RT could relieve functional limitations significantly in patients with CNLBP. Future studies should pay special attention to the detailed description of training variables for further analysis of the dose-response relationship of CNSLBP after RT. |
