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Cervical electromyogram profile differences between patients of neck pain and control
Shrawan Kumar1, Yogesh Narayan, Narasimha Prasad
1Department of Physical Therapy, University of Alberta, Edmonton, Alberta, Canada. Shrawan.kumar@ualberta.ca
Spine
|April 12, 2007
Summary
Electromyogram (EMG) signals can effectively differentiate chronic neck pain patients from healthy individuals. This study found significant differences in EMG parameters, aiding in diagnosis and treatment evaluation.
Area of Science:
- Biomedical Engineering
- Clinical Neuroscience
- Musculoskeletal Research
Background:
- Spinal pain diagnosis lacks a consistently effective tool.
- Electromyogram (EMG) signals offer potential for objective assessment.
Purpose of the Study:
- To identify differences in EMG signal parameters between cervical pain patients and healthy controls.
- To evaluate the utility of EMG in diagnosing chronic neck pain.
Main Methods:
- Comparative analysis of electromyogram (EMG) signals from 34 chronic neck pain patients and 63 healthy controls.
- Subjects performed various neck movements to maximal voluntary contraction or pain tolerance.
- Analysis included time and frequency domain EMG parameters, strength, and logistic regression.
Main Results:
- Patients exhibited significantly higher normalized peak EMG during maximal and submaximal exertions (P < 0.01).
- EMG onset patterns differed, with specific muscle recruitment variations observed.
- Logistic regression models accurately classified up to 97% of patients and controls.
Conclusions:
- Surface EMG is a successful tool for distinguishing chronic pain patients from controls.
- EMG analysis can aid in assessing the efficacy of treatment for cervical pain.
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