Individuals With Impaired Lumbopelvic Control Demonstrate Lumbar Multifidus Muscle Activation Deficit Using Ultrasound Imaging in Conjunction With Electrical Stimulation: A Cross-sectional Study
Issued Date
2022-10-01
Resource Type
ISSN
00039993
eISSN
1532821X
Scopus ID
2-s2.0-85128421416
Pubmed ID
35278466
Journal Title
Archives of Physical Medicine and Rehabilitation
Volume
103
Issue
10
Start Page
1951
End Page
1957
Rights Holder(s)
SCOPUS
Bibliographic Citation
Archives of Physical Medicine and Rehabilitation Vol.103 No.10 (2022) , 1951-1957
Suggested Citation
Sungnak P., Songjaroen S., Krityakiarana W., Wang H.K., Richards J., Wattananon P. Individuals With Impaired Lumbopelvic Control Demonstrate Lumbar Multifidus Muscle Activation Deficit Using Ultrasound Imaging in Conjunction With Electrical Stimulation: A Cross-sectional Study. Archives of Physical Medicine and Rehabilitation Vol.103 No.10 (2022) , 1951-1957. 1957. doi:10.1016/j.apmr.2022.02.010 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/84774
Title
Individuals With Impaired Lumbopelvic Control Demonstrate Lumbar Multifidus Muscle Activation Deficit Using Ultrasound Imaging in Conjunction With Electrical Stimulation: A Cross-sectional Study
Other Contributor(s)
Abstract
Objective: To determine lumbar multifidus (LM) muscle activation deficits in individuals with impaired lumbopelvic control (iLPC) based on musculoskeletal ultrasound in conjunction with electrical stimulation approach and the correlation between back extension force and LM activation. Design: A cross-sectional study design. Setting: A university laboratory. Participants: Fifty participants (25 iLPC and 25 no low back pain [NoLBP]) were recruited from the university physical therapy clinic and surrounding areas. Main Outcome Measures: The musculoskeletal ultrasound was used to measure LM thickness at rest, maximum voluntary isometric contraction (MVIC), and electrical stimulation combined with MVIC, and a handheld dynamometer was used to record force during MVIC and electrical stimulation combined with MVIC. These data were used to derive LM activation (LMACT) and percentage force generation (ForceGEN). Results: The iLPC group had significantly lower LMACT (17%) than the NoLBP group (P<.05). No significant difference was seen in ForceGEN between the NoLBP and iLPC groups (P>.05). No significant correlation was seen between LMACT and ForceGEN (P>.05). Conclusions: The findings support the utility of our protocol to determine LM activation deficits. The lower LM activation in iLPC group suggests that individuals with iLPC were unable to fully recruit the motor units available in LM. Force generation measurements may not be an appropriate approach to determine such deficits in LM.