scholarly journals Electromyographic Activity of Gluteus Maximus Muscle in Nonspecific Chronic Low Back Pain

2019 ◽  
Vol 87 (March) ◽  
pp. 1241-1245
Author(s):  
HATEM Y. MOHAMMED, M.Sc. REHAM H. DIAB, Ph.D. ◽  
RANIA R. MOHAMED, Ph.D.
2018 ◽  
Vol 31 (1) ◽  
pp. 147-154 ◽  
Author(s):  
André Augusto M.T. Mendes ◽  
Sandra Maria Sbeghen Ferreira de Freitas ◽  
César Ferreira Amorin ◽  
Cristina Maria Nunes Cabral ◽  
Rosimeire Simprini Padula

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0177008 ◽  
Author(s):  
Amy H. Amabile ◽  
John H. Bolte ◽  
Saskia D. Richter

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0249308
Author(s):  
Janet A. Deane ◽  
Adrian K. P. Lim ◽  
Alison H. McGregor ◽  
Paul H. Strutton

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.


2017 ◽  
Vol 57 ◽  
pp. 329
Author(s):  
Walkyria Vilas Boas Fernandes ◽  
Fabiano Politti ◽  
Fernanda de Córdoba Lanza ◽  
Paulo Garcia Lucareli ◽  
João Carlos Ferrari Corrêa

Author(s):  
Rania R. Mohamed ◽  
Amr A. Abdel-aziem ◽  
Hatem Y. Mohammed ◽  
Reham H. Diab

BACKGROUND: Patients with chronic low back pain (LBP) have an impaired dynamic spinal stability, which may lead to arm injuries. OBJECTIVES: To examine the latissimus dorsi and gluteus maximus muscles activation pattern and the upward scapular rotation in patients with chronic LBP. METHODS: Sixty-one right-handed males were divided into two groups: chronic LBP group (n= 31) and healthy controls (n= 30). The electromyography (EMG) activities of the right and left latissimus dorsi and gluteus maximus were recorded. The upward scapular rotation in different shoulder positions (neutral, 45∘, 90∘, 135∘ abduction and end range) was measured in both groups. RESULTS: The LBP group has a bilateral significant increased EMG of latissimus dorsi (p< 0.05) and significantly decreased EMG of gluteus maximus (p< 0.05) compared to the control group, without significant differences between the right and left sides (p> 0.05). There was a significant increase in upward scapular rotation in the LBP group relative to the control group in all shoulder abduction positions on both sides. The left side upward scapular rotation was more significant than the right (p< 0.05). CONCLUSION: Chronic LBP increased the latissimus dorsi muscle activities and decreased the gluteus maximus activities. It furthermore increased the upward scapular rotation in different shoulder abduction positions.


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