Effect of Repetitive Magnetic Stimulation and Transcutaneous Electrical Nerve Stimulation in Chronic Low Back Pain: A Pilot Study

ABSTRACT

OBJECTIVE: To evaluate the short and medium effect of peripheral repetitive magnetic stimulation therapy on chronic low back pain compared with transcutaneous electrical nerve stimulation therapy. METHOD: Twenty-three subjects with chronic low back pain were allocated randomly to repetitive magnetic stimulation group (n=13) and transcutaneous electrical nerve stimulation group (n=10). Each treatment consisted of 10-minutes sessions each day, totally 10 sessions over 2 weeks. Subjects were evaluated pre-treatment and post-treatment at 8 hours and 2 weeks. Outcome was measured with the Oswestry disability index, McGill pain questionnaire, and daily mean pain numeric rating scale. RESULTS: At 8 hours and 2 weeks post-treatment, transcutaneous electrical nerve stimulation therapy group showed a significant improvement in the mean pain numeric rating scale. Two weeks post-treatment, transcutaneous electrical nerve stimulation therapy group showed a significant improvement in the Oswestry disability index. But there were no significant therapeutic effect of repetitive magnetic stimulation therapy group at all period. CONCLUSION: This study showed that repetitive magnetic stimulation therapy may be less effective than transcutaneous electrical nerve stimulation therapy for the treatment of chronic low back pain.