Cold-induced vasospasm in patients with fibromyalgia and chronic low back pain in comparison to healthy subjects

1994 ◽  
Vol 13 (3) ◽  
pp. 442-445 ◽  
Author(s):  
E. Lapossy ◽  
P. Gasser ◽  
P. Hrycaj ◽  
B. Dubler ◽  
W. Samborski ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Low Back

The Amount and Temporal Structure of Center of Pressure Fluctuations During Quiet Standing in Patients With Chronic Low Back Pain

Motor Control ◽  
2020 ◽  
Vol 24 (1) ◽  
pp. 91-112
Author(s):  
Fatemeh Azadinia ◽  
Ismail Ebrahimi-Takamjani ◽  
Mojtaba Kamyab ◽  
Morteza Asgari ◽  
Mohamad Parnianpour
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Pressure Fluctuations ◽  
Quiet Standing ◽  
Low Back ◽  
Nonlinear Parameters

The characteristics of postural sway were assessed in quiet standing under three different postural task conditions in 14 patients with nonspecific chronic low back pain and 12 healthy subjects using linear and nonlinear center of pressure parameters. The linear parameters consisted of area, the mean total velocity, sway amplitude, the SD of velocity, and the phase plane portrait. The nonlinear parameters included the Lyapunov exponent, sample entropy, and the correlation dimension. The results showed that the amount of postural sway was higher in the patients with low back pain compared with the healthy subjects. Assessing the nonlinear parameters of the center of pressure showed a lower sample entropy and a higher correlation dimension in the patients with low back pain compared with the healthy subjects. The results of this study demonstrate the greater regularity and higher dimensionality of the center of pressure fluctuations in patients with nonspecific chronic low back pain, which suggests that these patients adopt different postural control strategies to maintain an upright stance.

Comparison of Selective Local and Global Muscle Thicknesses in Females with and without Chronic Low Back Pain

2018 ◽  
Vol 20 (3) ◽  
pp. 197-204 ◽  
Author(s):  
Mahnaz Aboufazeli ◽  
Mohammad Akbari ◽  
Ali Ashraf Jamshidi ◽  
Mohammad Saleh Jafarpisheh
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Muscle Thickness ◽  
Gluteus Medius ◽  
Transversus Abdominis ◽  
Low Back ◽  
Lumbar Multifidus ◽  
Sample Test

Background. Chronic low back pain (LBP) leads to long-term physical and psychological problems and may result in acute deterioration of the pain. It is hypothesized that size changes in selected limb and pelvis muscles during contracting movements are different between healthy individuals and LBP patients. Materials and methods. A case-control study including two groups of 30 female participants with and without LBP symptoms was designed. Participants were 20-45 years old (36.7±6.7, healthy subjects; 34.6±6.2 LBP subjects). Ultrasonography was used to estimate the thicknesses of the quadratus lumborum (QL), gluteus medius (GMed), transversus abdominis (TrA) and lumbar multifidus (MF). Thickness changes of the muscles in a submaximal contracting position compared to the rest position were measured. Statistical analysis included an independent t-test to determine the significance of differences, and the Kolmogrov-Smirnov two-sample test to evaluate the normality and reliability. Results. All muscles increased their thickness during contractions. The average increase in LBP subjects was lower than in the healthy subjects. The smaller increase in the muscle thickness of GMed in the LBP group may suggest a weakness because of imbalance in the GMed muscle of LBP patients. Conclusions. 1. Ultrasonography of local and global muscles is an appropriate device for clinical diagnosis of LBP. 2. Strengthening TrA, MF, and GMed muscles for pain prevention is effective in the prevention and treatment of LBP.

Does respiration perturb body balance more in chronic low back pain subjects than in healthy subjects?

2002 ◽  
Vol 17 (7) ◽  
pp. 548-550 ◽  
Author(s):  
A. Hamaoui ◽  
M.C. Do ◽  
L. Poupard ◽  
S. Bouisset
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Low Back ◽  
Body Balance

scholarly journals Test-retest Reliability of EMG β-Band Intermuscular Coherence of Non-specific Chronic Low Back Pain During Flexion-extension Task

2021 ◽  
Author(s):  
Salah Ghazi ◽  
Mohammad Reza Hadian ◽  
Azadeh Shadmehr ◽  
Saeed Talebian ◽  
Gholamreza Olyaei ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Small Sample ◽  
Low Back ◽  
Beta Band ◽  
Flexion Extension ◽  
Intermuscular Coherence ◽  
High Level

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.

Examination of Lumbopelvic and Lower Extremity Movements in two Subgroups of People with Chronic Low Back Pain Based on the Movement System Impairment Model During a Stair Descending Task

2019 ◽  
Vol 21 (3) ◽  
pp. 197-206
Author(s):  
Neda Namnik ◽  
Reza Salehi ◽  
Mohammad Jafar Shaterzadeh-Yazdi ◽  
Fateme Esfandiarpour ◽  
Mohammad Mehravar ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lower Extremity ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Frontal Plane ◽  
Model Material ◽  
Control Group ◽  
Low Back ◽  
Movement System

Background. Excessive and early lumbopelvic motion during functional tasks is associated with increased pain and symptoms in people with low back pain. The purpose of the current study was to compare lumbopelvic and lower extremity movements in two subgroups of chronic low back pain sufferers and healthy subjects during a stair descending task based on a movement system impairment model. Material and methods. A clinical examination was conducted to assign people with low back pain to movement system impairment-based subgroups. A control group included 18 healthy subjects, a lumbar Rotation with Flexion group included 12 subjects, and a lumbar Rotation with Extension group included 16 subjects. Differences in kinematics data between the groups were recorded during a stair descending task using a 7-camera 3-dimensional motion capture system. Results. In the lumbar Rotation with Flexion group, the onset of lumbar movement occurred earlier than in the control group (p = 0.043). In the lumbar Rotation with Flexion group, axial and frontal plane rotation of the pelvis and lower extremity were significantly greater than in the control group. Mean differences between the lumbar Rotation with Extension and control group were minimal for the motion assessed. Conclusion. Early and excessive lumbopelvic movement and more axial rotation in the lower extremities during a stair descending task were found in the lumbar Rotation with Flexion subgroup, which can be an important factor contributing to the development or persistence of low back pain in this group.

scholarly journals Maximal aerobic power in patients with chronic low back pain: a comparison with healthy subjects

2010 ◽  
Vol 20 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Ivan Duque ◽  
José-Hernán Parra ◽  
Alain Duvallet
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Healthy Subjects ◽  
Aerobic Power ◽  
Maximal Aerobic Power ◽  
Low Back
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