scholarly journals Relationship between Muscle Sizes from Ultrasound Images and Endurance Time with/without Experience of Low Back Pain : Pattern of Recruiting Trunk Muscles

2011 ◽  
Vol 11 (4) ◽  
pp. 235-243 ◽  
Author(s):  
Hye-Yeon Kim ◽  
So-Yeon Kim ◽  
Hae-Jung Lee
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Trunk Muscles ◽  
Ultrasound Images ◽  
Low Back ◽  
Endurance Time ◽  
Pain Pattern

scholarly journals Effect of Two Different Exercise Regimens on Trunk Muscle Morphometry and Endurance in Soldiers in Training

2013 ◽  
Vol 93 (9) ◽  
pp. 1211-1224 ◽  
Author(s):  
Deydre S. Teyhen ◽  
John D. Childs ◽  
Jessica L. Dugan ◽  
Alison C. Wright ◽  
Joshua A. Sorge ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Muscle Hypertrophy ◽  
Controlled Trial ◽  
Military Training ◽  
Exercise Program ◽  
Trunk Muscles ◽  
Healthy Population ◽  
Low Back ◽  
Endurance Time

BackgroundLimited evidence exists on how strength and endurance exercises commonly used to prevent low back pain affect muscle morphometry and endurance.ObjectiveThe purpose of this study was to analyze the effects of 2 exercise regimens on the morphometry and endurance of key trunk musculature in a healthy population.DesignThe study was designed as a randomized controlled trial.SettingThe study was conducted in a military training setting.ParticipantsA random subsample (n=340; 72% men, 28% women; mean [±SD] age=21.9±4.2 years; mean [±SD] body mass index=24.8±2.8 kg/m2) from the larger Prevention of Low Back Pain in the Military trial (N=4,325) was included.InterventionThe core stabilization exercise program (CSEP) included low-load/low-repetition motor control exercises, whereas the traditional exercise program (TEP) included exercises conducted at a fast pace, with the use of high-load, high-repetition trunk strengthening exercises.MeasurementsBaseline and follow-up examinations included ultrasound imaging of the trunk muscles and endurance tests. Linear mixed models were fitted to study the group and time effect and their interactions, accounting for the clustering effect.ResultsSymmetry generally improved in the rest and contracted states, but there were no differences suggestive of muscle hypertrophy or improved ability to contract the trunk muscles between soldiers receiving the CSEP or the TEP. Total trunk endurance time decreased over the 12-week period, but endurance performance favored soldiers in the CSEP group. Endurance time was not associated with future episodes of low back pain.LimitationsThe lack of morphological changes may not be detectable in an already-active cohort, or a more intensive dose was needed.ConclusionsAlthough improved symmetry was noted, neither the CSEP nor the TEP resulted in muscle hypertrophy. Longer endurance times were noted in individuals who completed the CSEP but were not strongly predictive of future low back pain episodes.

Trunk muscle function and its association with functional limitations in sedentary occupation workers with and without chronic nonspecific low back pain

2021 ◽  
pp. 1-9
Author(s):  
Angela Boutellier ◽  
Corina Nüesch ◽  
Peter Suter ◽  
Guido Perrot ◽  
Annegret Mündermann
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Muscle Function ◽  
Functional Limitations ◽  
Trunk Muscle ◽  
Trunk Muscles ◽  
Low Back ◽  
Endurance Time ◽  
Large Variability ◽  
Flexion Extension

BACKGROUND: The function of trunk muscles in chronic nonspecific low back pain (CNLBP) is controversially discussed, and trunk muscle function in sedentary occupation workers is poorly understood. OBJECTIVE: To investigate whether muscle function differs between sedentary occupation workers with and without CNLBP and to determine the association between functional limitations and muscle function. METHODS: This study included 32 sedentary occupation workers (16 workers with CNLBP and 16 age- and sex-matched workers without CNLBP). Group differences in isokinetic trunk flexion-extension strength, muscle cocontraction, endurance time (Biering-Sorensen test) and electromyographic muscle fatigue were assessed. The association of these parameters and Oswestry Disability Index (ODI) score were examined in the CNLBP group. RESULTS: Participants with CNLBP had lower trunk extensor (-20%) and flexor (-18%) strength and less cocontraction (-22%) than participants without CNLBP, but due to large variability in both groups these differences were not statistically significant. Trunk muscle endurance and fatigue were comparable between groups. Variance in endurance time explained 28% of variance in the ODI-score in the CNLBP group (R2= 0.277). CONCLUSIONS: In patients with CNLBP, greater functional disability was associated with lower endurance. Further evidence is necessary to elucidate whether specifically training endurance performance may be beneficial for sedentary occupation workers.

scholarly journals Relationship between Low Back Pain and Lumbar Proprioception, Functional Stability, Static Endurance of Trunk Muscles and Balance in Adolescents

2019 ◽  
Vol 2 (13) ◽  
Author(s):  
Lina Varnienė ◽  
Tomas Aukštikalnis ◽  
Gabrielė Andrejevaitė ◽  
Romualdas Sinkevičius ◽  
Juozas Raistenskis ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Trunk Muscles ◽  
Control Group ◽  
Low Back ◽  
Functional Stability ◽  
Test Results ◽  
Balance Tests ◽  
Lumbar Proprioception ◽  
Balance Error

Research background. Core management is particularly important for uninterrupted and continuous movement. Proprioceptive information is important to maintain the position of the body and control the centre of gravity. Low back pain ultimately affects motor control and leads to proprioceptive changes in injured structures and also can cause balance disorders. Unfortunately, it is unclear until now how low back pain affects proprioception. The aim of this study was to evaluate the relationship between low back pain and lumbar proprioception, functional stability, static endurance of trunk muscles and balance in adolescents. Methods. 42 adolescents participated in the study: 18 control subjects and 24 subjects with low back pain. We used the following assessment methods: the visual pain intensity scale (VAS) for pain evaluation, “flamingo” test, single leg test and balance error score system for balance assessment, Matthiass functional stability test for functional stability, and Biodex 4 Pro isokinetic dynamometer using trunk extension-flexion modular component and four points kneeling methodology for the evaluation of static endurance of trunk muscles, and proprioception. Results. After the assessment of balance, functional stability and proprioception, the results of the control group were statistically signifcantly better (p < 0.05). There was a moderate correlation between low back pain and Biodex 30 degree target reposition sense (r = 0.55), four points kneeling target position sense (r = 0.66), between low back pain and balance tests – “flamingo” and single leg test (r = 0.68, r = 0.61), between pain and Mathiass test (r = 0.52), also between proprioception and balance tests’ results (r = 0.44, r = 0.44, r = 0.46), proprioception and Mathiass test (r = 0.52). There was a strong correlation between pain and balance error scoring test (r = 0.85), balance error scoring test and four points kneeling test results (r = 0.71). All these correlationswere statistically signifcant. Conclusions. After the assessment of balance, functional stability and proprioception, the results of the control group were statistically signifcantly better (p < α). There was a moderate correlation between pain and proprioception, balance tests, Mathiass test results, also between proprioception and balance tests, Mathiass test. There was a strong correlation between pain and balance error scoring test results, between proprioception and balance error scoring test results.Keywords: Low back pain, proprioception, balance, functional stability.

Change in Regional Activity of the Quadratus Lumborum During Bridge Exercises

2020 ◽  
pp. 1-9
Author(s):  
Tomoki Oshikawa ◽  
Gen Adachi ◽  
Hiroshi Akuzawa ◽  
Yu Okubo ◽  
Koji Kaneoka
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lumbar Spine ◽  
Trunk Muscles ◽  
Electromyographic Activity ◽  
Low Back ◽  
Maximal Voluntary Isometric Contraction ◽  
Quadratus Lumborum ◽  
Activity Measurements ◽  
Measurement Design

Context: The quadratus lumborum (QL) is expected to contribute to segmental motor control of the lumbar spine to prevent low back pain. It has different layers (anterior [QL-a] and posterior [QL-p] layers), whose functional differences are becoming apparent. However, the difference between the QL-a and QL-p activities during bridge exercises utilized in rehabilitation is unclear. Objective: To compare QL-a and QL-p activities during bridge exercises. Design: Repeated-measurement design was used to assess electromyographic activity of trunk muscles recorded during 14 types of bridge exercises. Setting: University laboratory. Participants: A total of 13 healthy men with no history of lumbar spine disorders participated. Intervention: The participants performed 14 types of bridge exercises (3, 3, and 8 types of side bridge, back bridge, and front bridge [FB], respectively). Main Outcome Measures: Fine-wire electromyography was used for QL-a and QL-p activity measurements during bridge exercises. Results: Both QL-a and QL-p showed the highest activity during the side bridge with hip abduction  (47.3% [29.5%] and 43.0% [32.9%] maximal voluntary isometric contraction, respectively). The activity of the QL-a was significantly higher than that of the QL-p during back bridge with ipsilateral leg lift and FB elbow–toe with ipsilateral arm and contralateral leg lift (P < .05). With regard to the QL-p, the activity of the FB hand–knee with contralateral arm and ipsilateral leg lift, the FB elbow–knee with contralateral arm and ipsilateral leg lift, and the FB elbow–toe with contralateral arm and ipsilateral leg lift were significantly higher than that of the FB elbow–knee and FB elbow–toe (P < .05). Conclusion: This study indicates different regional activities; the QL-a activated during the back bridge with ipsilateral leg lift and FB with ipsilateral arm lift, and the QL-p activated during the FB with ipsilateral leg lift. These results have implications for the rehabilitation of low back pain or lumbar scoliosis patients based on QL recruitment.

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