The comparison of trunk muscles EMG activation between subjects with and without chronic low back pain during flexion–extension and lateral bending tasks

2000 ◽  
Vol 10 (2) ◽  
pp. 79-91 ◽  
Author(s):  
Christian Larivière ◽  
Denis Gagnon ◽  
Patrick Loisel
AAOHN Journal ◽  
1988 ◽  
Vol 36 (5) ◽  
pp. 198-199

A program utilizing patient response to repeated lumbar movements (including flexion, extension, lateral bending and rotation), known as the McKenzie method, has now been demonstrated to be twice as effective in alleviating low back pain compared to traction and back schools. This is a capsule summary of the “Extrac '86” study as detailed in The Journal of Musculoskeletal Medicine 1987; vol. 4(9):27–34 and 4(12):63–74.


Author(s):  
Thomas Kienbacher ◽  
Elisabeth Fehrmann ◽  
Richard Habenicht ◽  
Daniela Koller ◽  
Christian Oeffel ◽  
...  

2014 ◽  
Vol 27 (3) ◽  
pp. 447-455 ◽  
Author(s):  
Jarbas Melo Filho ◽  
Fernanda Maria Cercal Eduardo ◽  
Auristela Duarte de Lima Moser

Introduction Chronic low back pain with a mechanical and degenerative origin is among the most common symptoms experienced by people all over the world. Objective To analyze the effects of a protocol for lumbar and pelvic segmental stabilization with regard to isokinetic variables, functionality, and pain in patients with low back pain. Materials and methods The sample consisted of 21 subjects, 8 female and 13 male, with a mean age of 42.6 ± 12.5 years. We used tests for mobility (modified Schober index), flexibility (finger-floor distance), functionality (Roland-Morris questionnaire), pain (Visual Analog Scale of Pain), and the isokinetic variables torque peak, work, flexors/extensors ratio before and after application of a protocol for segmental stabilization in subjects with chronic low back pain with a mechanical and degenerative origin. This protocol was used for two months, being applied twice a week. The data were statistically tested by means of the software Statistica, version 8.0. Results There were significant improvements for the variables flexibility (p = 0.014), functionality (p < 0.001), pain level (p < 0.001), torque peak flexion (p = 0.008), torque peak range (p < 0.001), torque flexion (p = 0.001), torque range (p < 0.001), and flexors/extensors ratio (p = 0.001). Conclusion Even with the improved levels of trunk muscles strength, both flexors and extensors, it was not possible to rebalance the segment according to data available in the literature. It is believed that there is a need for a protocol with a longer application period, maintaining the recruitment of extensor muscles. Regarding mobility of the lumbar segment, the protocol showed no significant differences in post-treatment (p = 0.520). This may be attributed to improved muscle control, providing the increased passive stiffness required to promote stability.


Author(s):  
Salah Ghazi ◽  
Mohammad Reza Hadian ◽  
Azadeh Shadmehr ◽  
Saeed Talebian ◽  
Gholamreza Olyaei ◽  
...  

Introduction: This study aimed to investigate the reliability and agreement of the Beta-band Intermuscular Coherence (Bb-IMC) as a clinical assessment tool for Non-Specific Chronic Low Back Pain (NS-CLBP) patients and healthy subjects by studying four phases of the Flexion-Extension Task (F-ET): standing, flexion, relaxation, and extension phases. Materials and Methods: Twenty-four men with NS-CLBP and 20 healthy subjects voluntarily participated in this study. All subjects performed three trials of F-ET while the surface electromyography was recorded from the lumbar erector spinal, gluteus maximus,  and hamstring muscles of both sides. Beta-band intermuscular coherence analysis was used to calculate the pool coherence and the pairwise coherence for all mentioned muscles. Afterward, the Intra-class Correlation Coefficient (ICC), Standard Error of Measurement (SEM), and Minimal Detectable Change (MDC) for four phases of F-ET were used to analyze the intra- rater reliability and agreement of the measurements. Results: The investigation of ICC, SEM, and MDC showed that the reliability was moderate to a high level for pool and pairwise coherence of Bb-IMC in all mentioned muscles for   four phases of the flexion-extension task in NS-CLBP patients and healthy subjects. Yet, the agreement was low because the measurement error was relatively large. Conclusion: So far, no studies have used the Bb-IMC method to study low back pain, which is carried out in our research to check the reliability of this new method. Our findings revealed that pool and pairwise coherence obtained during F-ET have moderate to a high level of reliability for using Bb-IMC and could be considered a tool for the NS-CLBP patients’ assessment. Despite the small sample size investigated, in clinical practice the using Bb-IMC measure  can help to study the interaction of corticospinal in NS-CLBP and also in healthy subjects. This measure requires larger sample sizes in addition to studying other circumstances and functional movements such as lifting weight. Further, more research appears to be warranted by the observed effectiveness of a particular intervention in modulation mechanisms of corticospinal tract function by Bb-IMC in NS-CLBP.


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