Use of the surface EMG coactivational pattern for functional evaluation of trunk muscles in subjects with and without low-back pain

Chiou, Wen‐Ko; Lee, Yung-Hui; Chen, Wen-Jer

doi:10.1016/s0169-8141(97)00100-5

Cited by 14 publications

(7 citation statements)

References 29 publications

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“…Interesting findings were reported in a recent study examining the co-activation pattern of trunk muscles using a weight holding task for evaluation. Increased activity in external oblique and latissimus dorsi with decreased erector spinae muscle activity were found in back pain patients when compared to subjects without back pain [9]. In addition, it should take note of a previous observation that there are regional differences in the activation of external oblique during axial rotation [39].…”

Section: Emg Findingsmentioning

confidence: 83%

EMG activity of trunk muscles and torque output during isometric axial rotation exertion: a comparison between back pain patients and matched controls

Richardson

Parnianpour

et al. 2002

Journal Orthopaedic Research

137

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Abstract.4bnormal patterns of trunk muscle activity could aKect the biomechanics of spinal movements and result in back pain. The present study aimed to examine electromyographic (EMG) activity of abdominal and back muscles as well as triaxial torque output during isometric axial rotation at different exertion levels in back pain patients and matched controls. Twelve back pain patients and 12 matched controls performed isometric right and left axial rotation at 100%, 70%, 50%) and 30% maximum voluntary contractions in a standing position. Surface EMG activity of rectus abdominis, external oblique, internal oblique, latissimus dorsi, iliocostalis lumborum and multifidus were recorded bilaterally. The primary torque in the transverse plane and the coupling torques in sagittal and coronal planes were measured. Results showed that there was a trend ( P = 0.08) of higher flexion coupling torque during left axial rotation exertion in back pain patients. Higher activity for external oblique and lower activity for multifidus was shown during left axial rotation exertion in back pain group when compared to the control group. In right axial rotation, back pain patients exhibited lesser activity of rectus abdominis at higher levels of exertion when compared with matched controls. These findings demonstrated that decreased activation of one muscle may be compensated by overactivity in other muscles. The reduced levels of activity of the multifidus muscle during axial rotation exertion in back pain patients may indicate that spinal stability could be compromised. Future studies should consider these alternations in recruitment patterns in terms of spinal stability and internal loading. The findings also indicate the importance of training for coordination besides the strengthening of trunk muscles during rehabilitation process.

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Section: Emg Findingsmentioning

confidence: 83%

EMG activity of trunk muscles and torque output during isometric axial rotation exertion: a comparison between back pain patients and matched controls

Richardson

Parnianpour

et al. 2002

Journal Orthopaedic Research

137

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“…8 The finding that LBP patients demonstrated significantly increased recruitment levels of the left and right erector spinae muscles supports other studies involving subjects with LBP and different types of test movements. [31][32][33][34][35][36][37][38] The general finding of overactivity of superficial global muscles of the trunk, including the EO, 22 appears to be a common finding in subjects with LBP. It has been suggested that such findings might represent a functional adaptation to increase stability of the lumbar spine, 29 and thus be compensating for other muscles known to be closely associated with stability of the spine and also known to be dysfunctional in LBP.…”

Section: Discussionmentioning

confidence: 99%

Low Back Pain Patients Demonstrate Increased Hip Extensor Muscle Activity During Standardized Submaximal Rotation Efforts

Pirouzi

Hides²,

Richardson³

et al. 2006

Spine

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“…13 A positive effect size indicates that LBP subjects had higher SEMG than normals, whereas a negative effect size denotes that normals had higher SEMG than LBP subjects. Ten studies 10,11,12,20,35,37,46,50,52,56 were excluded from the calculation of effect sizes as these studies did not report the necessary means and standard deviations. Data from manuscripts reporting data graphically were extrapolated.…”

Section: Data Extractionmentioning

confidence: 99%

A Meta-Analytic Review of Surface Electromyography Among Persons With Low Back Pain and Normal, Healthy Controls

Geisser

Ranavaya

Haig

et al. 2005

The Journal of Pain

157

131

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Use of the surface EMG coactivational pattern for functional evaluation of trunk muscles in subjects with and without low-back pain

Cited by 14 publications

References 29 publications

EMG activity of trunk muscles and torque output during isometric axial rotation exertion: a comparison between back pain patients and matched controls

EMG activity of trunk muscles and torque output during isometric axial rotation exertion: a comparison between back pain patients and matched controls

Low Back Pain Patients Demonstrate Increased Hip Extensor Muscle Activity During Standardized Submaximal Rotation Efforts

A Meta-Analytic Review of Surface Electromyography Among Persons With Low Back Pain and Normal, Healthy Controls

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