Experimental Low Back Pain Decreased Trunk Muscle Activity in Currently Asymptomatic Recurrent Low Back Pain Patients During Step Tasks
| Autor: | Thomas Graven-Nielsen, Rogerio Pessoto Hirata, Lars Henrik Larsen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male musculoskeletal diseases Paraspinal Muscles Walking Asymptomatic sensitization Young Adult 03 medical and health sciences 0302 clinical medicine motor control Humans Medicine Muscle Skeletal Gluteal muscles Abdominal Muscles 030203 arthritis & rheumatology pain induction Electromyography business.industry Torso Motor control Low back pain Trunk recurrent low back pain nervous system diseases Intensity (physics) body regions Lumbar spine Anesthesiology and Pain Medicine medicine.anatomical_structure Neurology Anesthesia Asymptomatic Diseases population characteristics Female Neurology (clinical) medicine.symptom Trunk muscle business Recurrent Low Back Pain Low Back Pain 030217 neurology & neurosurgery |
| Zdroj: | Larsen, L H, Hirata, R P & Graven-Nielsen, T 2018, ' Experimental low back pain decreased trunk muscle activity in currently asymptomatic recurrent low back pain patients during step tasks ', Journal of Pain, vol. 19, no. 5, pp. 542-551 . https://doi.org/10.1016/j.jpain.2017.12.263 |
| ISSN: | 1526-5900 |
| DOI: | 10.1016/j.jpain.2017.12.263 |
| Popis: | Low back pain (LBP) patients demonstrate reorganized trunk muscle activity but if similar changes are manifest in recurrent LBP patients (R-LBP) during asymptomatic periods remains unknown. In 26 healthy and 27 currently asymptomatic R-LBP participants electromyographic activity (EMG) was recorded from trunk and gluteal muscles during series of stepping up and down on a step bench before and during experimentally intramuscular induced unilateral and bilateral LBP. Pain intensity was assessed by numeric rating scale (NRS) scores. Root-mean-square EMG (RMS-EMG) normalized to maximal voluntary contraction EMG and pain-evoked differences from baseline (Delta-RMS-EMG) were analyzed. Step task duration was calculated from foot sensors. R-LBP compared with controls showed higher baseline RMS-EMG and NRS scores of experimental pain (PPERSPECTIVES: Task duration and trunk muscle activity increased in controls and decreased in R-LBP patients during experimental muscle LBP. These results indicate protective strategies in controls during acute pain while R-LBP patients showed higher pain intensity and altered strategies that may be caused by the higher pain intensity, but the long-term consequence remains unknown. |
| Databáze: | OpenAIRE |
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