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Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises

Exercises for the abdominal muscles are widely used in athletic activities for strength training and prevention of low back disorders. The timing and volume of muscle activation for various movements have not yet been clarified. The purpose of this research was to evaluate the surface electromyograp...

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Autores principales: Mandroukas, Athanasios, Michailidis, Yiannis, Kyranoudis, Angelos E., Christoulas, Kosmas, Metaxas, Thomas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9505236/
https://www.ncbi.nlm.nih.gov/pubmed/36135425
http://dx.doi.org/10.3390/jfmk7030067
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author Mandroukas, Athanasios
Michailidis, Yiannis
Kyranoudis, Angelos E.
Christoulas, Kosmas
Metaxas, Thomas
author_facet Mandroukas, Athanasios
Michailidis, Yiannis
Kyranoudis, Angelos E.
Christoulas, Kosmas
Metaxas, Thomas
author_sort Mandroukas, Athanasios
collection PubMed
description Exercises for the abdominal muscles are widely used in athletic activities for strength training and prevention of low back disorders. The timing and volume of muscle activation for various movements have not yet been clarified. The purpose of this research was to evaluate the surface electromyographic activity from the upper (RAU) and lower part (RAL) of the rectus abdominis and the external oblique (EO) muscles during eleven abdominal muscle strength training exercises. Thirty-five healthy male university students with a subspecialty in soccer participated in the study. They performed exercises involving isometric, concentric, and eccentric muscle contractions. The electromyographic recordings were amplified by a factor of 1000, rectified, and integrated. Mean integrated values were calculated by dividing the elapsed time for the five repetitions, to provide the mean integrated electromyographic values for each exercise. Leg movements from a long lying position showed higher activity of the rectus abdominis, compared to the EO (p < 0.001). The dynamic sit-ups showed an obvious dominant activity of the EO, compared to the rectus abdominis (p < 0.001). During eccentric exercise, higher activity was found in the RAU, compared to the RAL (p < 0.001). The results could serve as a basis for improving the design and specification of training exercises. Pre-exercises should be performed before testing abdominal muscle strength.
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spelling pubmed-95052362022-09-24 Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises Mandroukas, Athanasios Michailidis, Yiannis Kyranoudis, Angelos E. Christoulas, Kosmas Metaxas, Thomas J Funct Morphol Kinesiol Article Exercises for the abdominal muscles are widely used in athletic activities for strength training and prevention of low back disorders. The timing and volume of muscle activation for various movements have not yet been clarified. The purpose of this research was to evaluate the surface electromyographic activity from the upper (RAU) and lower part (RAL) of the rectus abdominis and the external oblique (EO) muscles during eleven abdominal muscle strength training exercises. Thirty-five healthy male university students with a subspecialty in soccer participated in the study. They performed exercises involving isometric, concentric, and eccentric muscle contractions. The electromyographic recordings were amplified by a factor of 1000, rectified, and integrated. Mean integrated values were calculated by dividing the elapsed time for the five repetitions, to provide the mean integrated electromyographic values for each exercise. Leg movements from a long lying position showed higher activity of the rectus abdominis, compared to the EO (p < 0.001). The dynamic sit-ups showed an obvious dominant activity of the EO, compared to the rectus abdominis (p < 0.001). During eccentric exercise, higher activity was found in the RAU, compared to the RAL (p < 0.001). The results could serve as a basis for improving the design and specification of training exercises. Pre-exercises should be performed before testing abdominal muscle strength. MDPI 2022-09-06 /pmc/articles/PMC9505236/ /pubmed/36135425 http://dx.doi.org/10.3390/jfmk7030067 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mandroukas, Athanasios
Michailidis, Yiannis
Kyranoudis, Angelos E.
Christoulas, Kosmas
Metaxas, Thomas
Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title_full Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title_fullStr Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title_full_unstemmed Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title_short Surface Electromyographic Activity of the Rectus Abdominis and External Oblique during Isometric and Dynamic Exercises
title_sort surface electromyographic activity of the rectus abdominis and external oblique during isometric and dynamic exercises
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9505236/
https://www.ncbi.nlm.nih.gov/pubmed/36135425
http://dx.doi.org/10.3390/jfmk7030067
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