| Objective: To observe the clinical efficacy of Baduanjin training in treating chronic low back pain (LBP) and its influence on the surface EMG signal of erector spinae. Methods: Totally, 84 cases of chronic LBP were collected and randomly divide into observation group and control group, with 42 cases in each group. Both groups received conventional physical therapy, and the observation group received Baduanjin training additionally for a total of 4 weeks. The pain visual analogue scale (VAS) and Oswestry dysfunction index (ODI) scores were recorded before treatment, after treatment, and during the 6-month follow-up. Surface electromyography (sEMG) was used to collect the average electromyographic value of the lumbar erector spinae muscle in three different states (flexion, extension and maximum flexion) of lumbar spine, and then the flexion-relaxation ratio (FRR) was calculated. Results: (1) After treatment, VAS and ODI scores in the two groups were significantly lower than those before treatment (P<0.01), FLEXAEMG, EXEAEMG and FRR were significantly increased (P<0.01), and MVFAEMG significantly reduced, and there were no significant differences between the observation group and the control group (P<0.05); (2) At 6th month of follow-up, the VAS and ODI scores and MVFAEMG in the control group were significantly increased, and the FLEXAEMG, EXEAEMG and FRR decreased (all P<0.05). The observation group had no significant changes in VAS and ODI scores, while the FLEXAEMG, EXEAEMG and FRR decreased (P<0.05), and MVFAEMG increased (P<0.05). There was significant difference between two groups (P<0.05). Conclusion: Baduanjin training can effectively relieve the clinical symptoms of chronic LBP and has better long-term effects, which are related to the improvement of the contraction and relaxation of erector spinal muscles and the stability of the lumbar spine. |
