AI Article Synopsis
- The study compared trunk muscle activation timing between patients with chronic nonspecific low back pain (NSLBP) and healthy controls during a postural challenge.
- Findings showed that NSLBP patients had delayed muscle onset and shorter duration of muscle activity compared to controls.
- These results indicate that individuals with NSLBP may have an inefficient method of maintaining trunk posture, potentially as a way to avoid pain.
Article Abstract
The authors investigated differences in trunk muscle activation timing between patients with chronic nonspecific low back pain (NSLBP) and asymptomatic controls during a self-initiated postural challenge. The authors compared 30 participants with NSLBP to 30 controls. Surface electromyographic data were collected from bilateral trunk muscles. Dependent variables were trunk muscle onset and offset relative to extremity muscle activation and duration of the trunk muscle burst and abdominal-extensor cocontraction. Patients with NSLBP demonstrated significantly delayed trunk muscle onset latency (p < .01), and shorter burst (p = .02) and cocontraction durations (p < .01). Results suggest that patients with NSLBP may be inefficient in regulating trunk posture during voluntary extremity movements. These alterations could also represent a compensatory control pattern imposed by the CNS to avoid pain.
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| http://dx.doi.org/10.1080/00222891003612789 | DOI Listing |
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