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Understanding the impact of lumbar disc degeneration and chronic low back pain: A cross-sectional electromyographic analysis of postural strategy during predicted and unpredicted postural perturbations
- Source :
- PLoS ONE, Vol 16, Iss 4, p e0249308 (2021), Deane, J A, Macaluso, A (ed.), Lim, A K P, McGregor, A H & Strutton, P H 2021, ' Understanding the impact of lumbar disc degeneration and chronic low back pain: A cross-sectional electromyographic analysis of postural strategy during predicted and unpredicted postural perturbations ', PLoS ONE, vol. 16, no. 4, e0249308 . https://doi.org/10.1371/journal.pone.0249308, PLoS ONE
- Publication Year :
- 2021
- Publisher :
- Public Library of Science (PLoS), 2021.
-
Abstract
- People with chronic low back pain (LBP) exhibit changes in postural control. Stereotypical muscle activations resulting from external perturbations include anticipatory (APAs) and compensatory (CPAs) postural adjustments. The aim and objective of this study was to determine differences in postural control strategies (peak amplitude, APAs and CPAs) between symptomatic and asymptomatic adults with and without Lumbar Disc Degeneration (LDD) using surface electromyography during forward postural perturbation. Ninety-seven subjects participated in the study (mean age 50 years (SD 12)). 3T MRI was used to acquire T2 weighted images (L1-S1). LDD was determined using Pfirrmann grading. A bespoke translational platform was designed to deliver horizontal perturbations in sagittal and frontal planes. Electromyographic activity was analysed bilaterally from 8 trunk and lower limb muscles during four established APA and CPA epochs. A Kruskal-Wallis H test with Bonferroni correction for multiple comparisons was conducted. Four groups were identified: no LDD no pain (n = 19), LDD no pain (n = 38), LDD pain (n = 35) and no LDD pain (n = 5). There were no significant differences in age or gender between groups. The most significant difference between groups was observed during forward perturbation. In the APA and CPA phases of predictable forward perturbation there were significant differences ankle strategy between groups (p = 0.007–0.008); lateral gastrocnemius and tibialis anterior activity was higher in the LDD pain than the LDD no pain group. There were no significant differences in the unpredictable condition (p>0.05). These findings were different from the remaining groups, where significant differences in hip strategy were observed during both perturbation conditions (p = 0.004–0.006). Symptomatic LDD patients exhibit different electromyographic strategies to asymptomatic LDD controls. Future LBP electromyographic research should benefit from considering assessment of both lower limbs in addition to the spine. This approach could prevent underestimation of postural control deficits and guide targeted rehabilitation.
- Subjects :
- Male
myalgia
Muscle Physiology
Physiology
medicine.medical_treatment
Rectus Abdominis
Intervertebral Disc Degeneration
Electromyography
Medicine and Health Sciences
Biomechanics
Postural Balance
Musculoskeletal System
Multidisciplinary
Rehabilitation
medicine.diagnostic_test
Middle Aged
Magnetic Resonance Imaging
Multidisciplinary Sciences
medicine.anatomical_structure
Neuropathic pain
Science & Technology - Other Topics
Legs
Medicine
Female
Anatomy
medicine.symptom
Research Article
Adult
medicine.medical_specialty
General Science & Technology
Cognitive Neuroscience
Science
Lower Back Pain
Pain
Asymptomatic
Pelvis
Motor Reactions
Signs and Symptoms
Physical medicine and rehabilitation
medicine
Humans
General
Skeleton
Science & Technology
Hip
business.industry
Ankles
Biology and Life Sciences
Myalgia
Trunk
Sagittal plane
Postural Control
Cross-Sectional Studies
Body Limbs
Cognitive Science
Clinical Medicine
Ankle
Musculoskeletal Mechanics
business
Low Back Pain
Neuroscience
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 16
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....033088ce2d67b97f4463af9a34babc32