Abstract
ABSTRACT Background:Restoring the contractile function to the abdominal wall is a major goal in hernia repair. However, the core understanding is required when choosing the method for outcome assessment. Aim:To assess the role of the anterolateral abdominal muscles on abdominal wall function in patients undergoing hernia repair by analysis of correlation between the surface electromyography activation signal of these muscles and torque produced during validated strength tests. Methods:Activation of the rectus abdominis, external oblique, and internal oblique/transverse abdominis muscles was evaluated by surface electromyography during two validated tests: Step: 1-A, isometric contraction in dorsal decubitus; 1-B, isometric contraction in lateral decubitus; 2-A, isokinetic Biodex testing; and 2-B, isometric Biodex testing. Results:Twenty healthy volunteers were evaluated. The linear correlation coefficient between root mean square/peak data obtained from surface electromyography signal analysis for each muscle and the peak torque variable was always <0.2 and statistically non-significant (p<0.05). The agonist/antagonist ratio showed a positive, significant, weak-to-moderate correlation in the external oblique (Peak, p=0.027; root mean square, 0.564). Surface electromyography results correlated positively among different abdominal contraction protocols, as well as with a daily physical activity questionnaire. Conclusions:There was no correlation between surface electromyography examination of the anterolateral abdominal wall muscles and torque measured by a validated instrument, except in a variable that does not directly represent torque generation.
Highlights
The anterolateral abdominal wall consists of the rectus abdominis muscle, the internal and external obliques, and the transverse abdominis and its aponeuroses
The mean (SD) age was 26 years (23-34), and the mean body mass index (BMI) was 22.7 kg/m2, which was within ideal limits
Between different abdominal contraction exercises There was always a strong, significant, and positive correlation between Surface electromyography (SEMG) scores for both Peak and root mean square (RMS) when Step 1 exercise scores were correlated with Step 2 scores for rectus abdominis (RA), external oblique (EO), and IO/TA (Figure 5)
Summary
The anterolateral abdominal wall consists of the rectus abdominis muscle, the internal and external obliques, and the transverse abdominis and its aponeuroses. These muscles play a key role among the 26 other pairs that make up the core This muscular system supports the abdominal and lumbopelvic regions, stabilizing the spine and pelvis and maintaining kinetic organization during functional movement. Any structural or neurological damage to this muscularaponeurotic system can impair quality of life These effects are clear in patients with incisional hernia[16,29]. Variability between tests, poor technical descriptions, small sample sizes, no description of the physical activity level of the evaluated individuals, and non-standardized signal capture and processing techniques were some of the problems observed Within this context, the objective of the present study was to determine standardized activation signal values for the muscles of the anterolateral abdominal wall during isometric and isokinetic exercises, validate these in Biodex, and correlate these results with torque data obtained during performance of the aforementioned exercises
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Arquivos brasileiros de cirurgia digestiva : ABCD = Brazilian archives of digestive surgery
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
