Activation imbalances in lumbar spine muscles in the presence of chronic low back pain

2003 ◽  
Vol 94 (4) ◽  
pp. 1410-1420 ◽  
Author(s):  
Lars I. E. Oddsson ◽  
Carlo J. De Luca
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Root Mean Square ◽  
Chronic Low Back Pain ◽  
Neuromuscular Fatigue ◽  
Emg Activity ◽  
Median Frequency ◽  
Low Back ◽  
Mean Square ◽  
Root Mean Square Amplitude

Paraspinal electromyographic (EMG) activity was recorded bilaterally from three lumbar levels during 30-s isometric trunk extensions [40 and 80% of maximum voluntary contraction (MVC)] in 20 healthy men and 14 chronic low back pain patients in pain. EMG parameters indicating neuromuscular fatigue and contralateral imbalances in EMG root-mean-square amplitude and median frequency were analyzed. Patients in pain showed less fatigue than controls at both contraction levels and produced only 55% of their MVC. Patients in pain likely did not produce a “true” maximum effort. A low MVC estimate would mean lower absolute contraction levels and less neuromuscular fatigue, thus explaining lower scores in the patients. Contralateral root-mean-square amplitude imbalances were present in both categories of subjects although such imbalances, when averaged across lumbar levels, were significantly larger in patients. Median frequency imbalances were significantly larger in the patients, at segmental as well as across lumbar levels. These results suggest that the presence of pain in these patients caused a redistribution of the activation behavior between synergistic muscles of the lumbar back.

scholarly journals Age- and sex-specific effects in paravertebral surface electromyographic back extensor muscle fatigue in chronic low back pain

GeroScience ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 251-269 ◽  
Author(s):  
Gerold Ebenbichler ◽  
Richard Habenicht ◽  
Sara Ziegelbecker ◽  
Josef Kollmitzer ◽  
Patrick Mair ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Muscle Fatigue ◽  
Chronic Low Back Pain ◽  
Median Frequency ◽  
Low Back ◽  
Back Muscle ◽  
The Impact ◽  
Back Extensor ◽  
Age And Sex

AbstractThe impact of aging on the back muscles is not well understood, yet may hold clues to both normal aging and chronic low back pain (cLBP). This study sought to investigate whether the median frequency (MF) surface electromyographic (SEMG) back muscle fatigue method—a proxy for glycolytic muscle metabolism—would be able to detect age- and sex-specific differences in neuromuscular and muscle metabolic functions in individuals with cLBP in a reliable way, and whether it would be as sensitive as when used on healthy individuals. With participants seated on a dynamometer (20° trunk anteflexion), paraspinal SEMG activity was recorded bilaterally from the multifidus (L5), longissimus (L2), and iliolumbalis (L1) muscles during isometric, sustained back extensions loaded at 80% of maximum from 117 younger (58 females) and 112 older (56 female) cLBP individuals. Tests were repeated after 1–2 days and 6 weeks. Median frequency, the SEMG variable indicating neuromuscular fatigue, was analyzed. Maximum back extensor strength was comparable between younger and older participants. Significantly less MF-SEMG back muscle fatigue was observed in older as compared to younger, and in older female as compared to older male cLBP individuals. Relative reliability was excellent, but absolute reliability appeared large for this SEMG-fatigue measure. Findings suggest that cLBP likely does not mask the age-specific diagnostic potential of the MF-SEMG back extensor fatigue method. Thus, this method possesses a great potential to be further developed into a valuable biomarker capable of detecting back muscle function at risk of sarcopenia at very early stages.

Effects of external pelvic compression on trunk and hip muscle EMG activity during prone hip extension in females with chronic low back pain

2014 ◽  
Vol 19 (5) ◽  
pp. 467-471 ◽  
Author(s):  
Ji-Won Kim ◽  
Oh-Yun Kwon ◽  
Tae-Ho Kim ◽  
Duk-Hyun An ◽  
Jae-seop Oh
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Emg Activity ◽  
Low Back ◽  
Hip Muscle ◽  
Hip Extension

scholarly journals Core Muscle Activity during TRX Suspension Exercises with and without Kinesiology Taping in Adults with Chronic Low Back Pain: Implications for Rehabilitation

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Shirley S. M. Fong ◽  
Y. T. Tam ◽  
Duncan J. Macfarlane ◽  
Shamay S. M. Ng ◽  
Young-Hyeon Bae ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Chronic Low Back Pain ◽  
Transversus Abdominis ◽  
Emg Activity ◽  
Low Back ◽  
The Core ◽  
Emg Amplitude ◽  
Significant Difference ◽  
Hip Abduction

This study aimed to examine the effects of kinesiology taping (KT) and different TRX suspension workouts on the amplitude of electromyographic (EMG) activity in the core muscles among people with chronic low back pain (LBP). Each participant (totaln=21) was exposed to two KT conditions: no taping and taping, while performing four TRX suspension exercises: (1) hamstring curl, (2) hip abduction in plank, (3) chest press, and (4) 45-degree row. Right transversus abdominis/internal oblique (TrAIO), rectus abdominis (RA), external oblique (EO), and superficial lumbar multifidus (LMF) activity was recorded with surface EMG and expressed as a percentage of the EMG amplitude recorded during a maximal voluntary isometric contraction of the respective muscles. Hip abduction in plank increased TrAIO, RA, and LMF EMG amplitude compared with other TRX positions (P<0.008). Only the hamstring curl was effective in inducing a high EMG amplitude of LMF (P<0.001). No significant difference in EMG magnitude was found between the taping and no taping conditions overall (P>0.05). Hip abduction in plank most effectively activated abdominal muscles, whereas the hamstring curl most effectively activated the paraspinal muscles. Applying KT conferred no immediate benefits in improving the core muscle activation during TRX training in adults with chronic LBP.

Anxiety sensitivity and opioid use motives among adults with chronic low back pain.

2020 ◽  
Author(s):  
Andrew H. Rogers ◽  
Lorra Garey ◽  
Amanda M. Raines ◽  
Nicholas P. Allan ◽  
Norman B. Schmidt ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Anxiety Sensitivity ◽  
Chronic Low Back Pain ◽  
Low Back ◽  
Opioid Use
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