Cortical excitability and multifidus activation responses to transcranial direct current stimulation in patients with chronic low back pain during remission
Issued Date
2023-12-01
Resource Type
eISSN
20452322
Scopus ID
2-s2.0-85172283759
Journal Title
Scientific Reports
Volume
13
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Scientific Reports Vol.13 No.1 (2023)
Suggested Citation
Wattananon P., Thu K.W., Maharjan S., Sornkaew K., Wang H.K. Cortical excitability and multifidus activation responses to transcranial direct current stimulation in patients with chronic low back pain during remission. Scientific Reports Vol.13 No.1 (2023). doi:10.1038/s41598-023-43597-7 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/90303
Title
Cortical excitability and multifidus activation responses to transcranial direct current stimulation in patients with chronic low back pain during remission
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
Evidence indicates that patients with chronic low back pain (CLBP) have lumbar multifidus muscle (LM) activation deficit which might be caused by changes in cortical excitability. Anodal transcranial direct current stimulation (a-tDCS) can be used to restore cortical excitability. This study aimed to (1) determine the immediate effects of a-tDCS on the cortical excitability and LM activation and (2) explore the relationship between cortical excitability and LM activation. Thirteen participants with CLBP during remission and 11 healthy participants were recruited. Cortical excitability (peak-to-peak motor evoked potential amplitude; P2P and cortical silent period; CSP) and LM activation were measured at pre- and post-intervention. We found significant difference (P < 0.05) in P2P between groups. However, no significant differences (P > 0.05) in P2P, CSP and LM activation were found between pre- and post-intervention in CLBP. The CLBP group demonstrated significant correlation (P = 0.05) between P2P and LM activation. Although our finding demonstrates change in P2P in the CLBP group, one-session of a-tDCS cannot induce changes in cortical excitability and LM activation. However, moderate to strong correlation between P2P and LM activation suggests the involvement of cortical level in LM activation deficit. Therefore, non-significant changes could have been due to inadequate dose of a-tDCS.