Electromyographic and ultrasonographic evaluation of neuromuscular electrical stimulation training on the equine rectus abdominis muscle

2020 ◽  
Vol 16 (2) ◽  
pp. 87-100
Author(s):  
T. Hernández-Fernández ◽  
L. Gutiérrez-Cepeda ◽  
J. López-Sanromán ◽  
G. Manso-Díaz ◽  
R. Cediel
Keyword(s):  
Electrical Stimulation ◽  
Muscle Force ◽  
Neuromuscular Electrical Stimulation ◽  
Muscle Thickness ◽  
Muscular Contraction ◽  
Rectus Abdominis ◽  
Wilcoxon Test ◽  
Median Frequency ◽  
Rectus Abdominis Muscle ◽  
Test Analysis

The current study aimed to determine the effects of neuromuscular electrical stimulation (NMES) on equine rectus abdominis using surface electromyography (sEMG) and ultrasonographic muscle thickness evaluation. Five horses were trained with NMES for 12 weeks; muscle thickness and sEMG evaluations were obtained before and after the training period. Three different tests were carried out for sEMG evaluations: Test A tried to elicit a voluntary maximal isometric contraction (VMIC); Test B used NMES to elicit a muscular contraction; and Test C used 1 ms repetitive electrical impulses to elicit a series of M-waves. Muscle strength was evaluated from the root mean square (RMS; Tests A and B) and peak to peak (PP; Test C) values obtained from the sEMG data. Measures related to amplitude (RMSa; RMSm; RMSa; PP) were normalised with their pre-training values for every muscle prior to statistical analysis, leading to values as a proportion of the initial value. The evaluation of muscle fatigue was performed using a Fourier test analysis of the frequency range, obtaining the median frequency (MF) for all tests. Muscle thickness (MT) was measured by ultrasound of left and right sides of the rectus abdominis. Data were analysed using non parametric test of Wilcoxon (Test A RMSa; Test A RMSm; Test B RMSa; Test B RMSm; Test C PP; MT; P<0.05) and t-test (Test A MF; Test B MF; Test C MF; P<0.05). Statistical differences were observed between baseline and trained horses. Muscle force increase following NMES training in Test B (RMSa 2.50±0.69; RMSm 2.59±0.76) and Test C (PP 5.20±1.76). Fatigue of the rectus abdominis decreased in Test A (168.33±55.19 vs 232.63±44.15 Hz) and Test C MF (187.93±20.76 vs 236.98±52.39 Hz), but not in Test B (363.98±45.48 vs 327.95±50.84 Hz). The difference in muscle thickness between the two groups was not significant (10.96±0.64; 11.78±0.79 mm). The results suggest that NMES training could be used as an effective method to increase muscle force and fatigue resistance of the rectus abdominis muscle in the horse.

Does Neuromuscular Electrical Stimulation Have an Additive Effect on Disability, Pain and Abdominal and Lumbar Muscle Thickness in Chronic Low Back Pain? – A Randomized Controlled Double-Blind Study

2021 ◽  
Author(s):  
Ecenur Atli ◽  
Dilber Karagozoglu Coskunsu ◽  
Zeynep Turan ◽  
Ozden Ozyemisci Taskiran
Keyword(s):  
Electrical Stimulation ◽  
Low Back Pain ◽  
Back Pain ◽  
Outcome Measures ◽  
Chronic Low Back Pain ◽  
Neuromuscular Electrical Stimulation ◽  
Muscle Thickness ◽  
Transversus Abdominis ◽  
Control Group ◽  
Low Back

Abstract Objective To examine the effect of neuromuscular electrical stimulation (NMES) combined with core stabilization exercises (CSE) in patients with chronic low back pain (CLBP). Methods Thirty-six patients (mean age 33.6±12.6 years) with CLBP were randomly assigned to 4 weeks (12 sessions) of NMES group (NMES combined with CSE) (n=18) vs. Control group (sham NMES and CSE) (n=18). After the 4 weeks, same exercises were given as home exercise program without NMES. The outcome measures were Oswestry Disability Index (ODI), Visual Analog Scale (VAS), Nottingham Health Profile (NHP) and ultrasonography. Ultrasonography was used for measuring transversus abdominis (TrA), internal oblique (IO), external oblique (EO) muscles thickness and lumbar multifidus muscle thickness and area. Assessments were performed at baseline and 4th week and eighth week follow-up. Results In both groups, the change of ODI, VAS and NHP values of the first measurement according to the values of the 4th week and the eighth week were found statistically significant (p=0.001; p<0.01). There were no statistically significant differences in ODI, VAS and NHP scores between the 4th week and the eighth week in both groups (p>0.05). None of NMES and control group measurements with US showed a statistically significant increase in the TrA, IO, EO thickness and multifidus thickness and area (p>0.05). Conclusions It was shown that NMES can be tolerated by patients with CLBP, but the addition of simultaneus NMES to CSE had no contribution to the clinical outcome measures.

Rectus abdominis muscle thickness as a predictor of peritoneal catheter dysfunction in emergency-start peritoneal dialysis patients

2021 ◽  
Author(s):  
Jonathan S. Chávez-Iñiguez ◽  
Pablo Maggiani-Aguilera ◽  
José A. Cruz-Ramos ◽  
Guillermo Navarro-Blackaller ◽  
Victor H. Luquín- Arellano ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Muscle Thickness ◽  
Rectus Abdominis ◽  
Rectus Abdominis Muscle ◽  
Dialysis Patients ◽  
Peritoneal Catheter ◽  
Catheter Dysfunction

scholarly journals Acute Neuromuscular Electrical Stimulation (NMES) With Blood Flow Restriction: The Effect of Restriction Pressures

2020 ◽  
pp. 1-9
Author(s):  
Paul Head ◽  
Mark Waldron ◽  
Nicola Theis ◽  
Stephen David Patterson
Keyword(s):  
Blood Flow ◽  
Electrical Stimulation ◽  
Isometric Contraction ◽  
Perceived Exertion ◽  
Neuromuscular Electrical Stimulation ◽  
Muscle Thickness ◽  
Ratings Of Perceived Exertion ◽  
Experimental Conditions ◽  
Maximal Voluntary Isometric Contraction ◽  
Flow Restriction

Context: Neuromuscular electrical stimulation (NMES) combined with blood flow restriction (BFR) has been shown to improve muscular strength and size better than NMES alone. However, previous studies used varied methodologies not recommended by previous NMES or BFR research. Objective: The present study investigated the acute effects of NMES combined with varying degrees of BFR using research-recommended procedures to enhance understanding and the clinical applicability of this combination. Design: Randomized crossover. Setting: Physiology laboratory. Participants: A total of 20 healthy adults (age 27 [4] y; height 177 [8] cm; body mass 77 [13] kg). Interventions: Six sessions separated by at least 7 days. The first 2 visits served as familiarization, with the experimental conditions performed in the final 4 sessions: NMES alone, NMES 40% BFR, NMES 60% BFR, and NMES 80% BFR. Main Outcome Measures: Maximal voluntary isometric contraction, muscle thickness, blood pressure, heart rate, rating of perceived exertion, and pain were all recorded before and after each condition. Results: The NMES 80% BFR caused greater maximal voluntary isometric contraction decline than any other condition (−38.9 [22.3] N·m, P < .01). Vastus medialis and vastus lateralis muscle thickness acutely increased after all experimental conditions (P < .05). Pain and ratings of perceived exertion were higher after NMES 80% BFR compared with all other experimental conditions (P < .05). No cardiovascular effects were observed between conditions. Conclusion: The NMES combined with 80% BFR caused greater acute force decrement than the other conditions. However, greater perceptual ratings of pain and ratings of perceived exertion were observed with NMES 80% BFR. These acute observations must be investigated during chronic interventions to corroborate any relationship to changes in muscle strength and size in clinical populations.

scholarly journals Effects of Combined Neuromuscular Electrical Stimulation and Voluntary Muscular Contraction on Interstitial Lung Disease

2021 ◽  
Vol 36 (3) ◽  
pp. 295-306
Author(s):  
Masashi ZENTA ◽  
Kenji TSUSHIMA ◽  
Tomohiro HATTORI ◽  
Yuki OGAWA ◽  
Kaede YOSHIHARA ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Interstitial Lung Disease ◽  
Lung Disease ◽  
Neuromuscular Electrical Stimulation ◽  
Muscular Contraction

scholarly journals Advanced T stage and thick rectus abdominis muscle triggers outlet obstruction and high-output stoma following ileostomy in patients with rectal cancer

2020 ◽  
Author(s):  
Yasuhiro Komatsu ◽  
Kunitoshi Shigeyasu ◽  
Yoshiko Mori ◽  
Kazutaka Takahashi ◽  
Nanako Hata ◽  
...  
Keyword(s):  
Risk Factors ◽  
Rectal Cancer ◽  
Outlet Obstruction ◽  
Muscle Thickness ◽  
Rectus Abdominis ◽  
Rectus Abdominis Muscle ◽  
T Stage ◽  
Common Risk Factors ◽  
Postoperative Problems ◽  
High Output

Abstract Background Ileostomy creation is an excellent approach to prevent leakage in patients undergoing low anterior resection for the treatment of rectal cancer. However, the two major complications of ileostomy are outlet obstruction and high-output stoma, and these complications remain unavoidable postoperative problems of ileostomy. Methods Risk factors associated with outlet obstruction and high-output stoma were retrospectively analyzed. The study included 83 patients with rectal cancer who underwent surgery. Of these patients, 34 underwent ileostomy creation. Results We found that outlet obstruction and high-output stoma were highly related (p = 0.03). Additionally, a thick rectus abdominis muscle and advanced T stage were the common risk factors of outlet obstruction (p = 0.0005 and p = 0.01, respectively) and high-output stoma (p = 0.04 and p = 0.03, respectively). Conclusions Our findings suggest that rectus abdominis muscle thickness and advanced T stage are predictive markers of outlet obstruction and high-output stoma.

Risk of Outlet Obstruction Associated With Defunctioning Loop Ileostomy in Rectal Cancer Surgery

2021 ◽  
Vol 1 (5) ◽  
pp. 465-470
Author(s):  
HIROYA ENOMOTO ◽  
KATSUHITO SUWA ◽  
NANA TAKEUCHI ◽  
YOSHITO HANNYA ◽  
YUHEI TSUKAZAKI ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Anastomotic Leakage ◽  
Odds Ratio ◽  
Rectal Resection ◽  
Univariate Analysis ◽  
Outlet Obstruction ◽  
Muscle Thickness ◽  
Rectus Abdominis ◽  
Rectus Abdominis Muscle ◽  
Anterior Rectal Resection

Background: The outlet obstruction (OO) rate is 5.4-18.4% after defunctioning ileostomy (DI) following rectal cancer resection to reduce the incidence and severity of anastomotic leakage; OO affects a patient’s quality of life and prolongs hospitalization. Patients and Methods: A retrospective analysis was performed of patients who underwent anterior rectal resection and DI for rectal cancer. Results: Among 100 patients undergoing anterior rectal resection with DI for rectal cancer, 28 (28%) developed OO. Anastomotic leakage and a rectus abdominis muscle thickness ≥10 mm on preoperative computed tomography were significantly associated with the risk of OO in univariate analysis. Multivariate analysis also demonstrated that anastomotic leakage (odds ratio=4.320, 95% confidence interval=1.280-14.60, p=0.019) and rectus abdominis muscle thickness ≥10 mm (odds ratio=3.710, 95% confidence intervaI=1.280-10.70, p=0.016) were significantly risk factors for OO. Conclusion: When OO is observed, an anastomotic leakage should be suspected, especially if there is a high rectus abdominis muscle thickness.

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