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Related Concept Videos

Muscles of the Abdomen01:21

Muscles of the Abdomen

The abdominal wall encircles the abdominal cavity, providing flexible protection and shielding the internal organs from harm. It is bordered at the top by the xiphoid process and costal margins, at the back by the vertebral column, and at the bottom by the pelvic bones and inguinal ligament. The abdominal wall is divided into two regions — the anterolateral and posterior regions.
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Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
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Electromyographic analysis of the rectus abdominis muscle in pelvic retroversion and the decrease of the lower limbs.

R de Cássia Pelizário Munhoz Martinelli1, R de Faria Negrão Filho, A C Silva

  • 1Universidade Paranaense, Department of Physiotherapy, UNIPAR, Umuarama, PR, Brazil. rita@unipar.br

Electromyography and Clinical Neurophysiology
|October 8, 2008
PubMed
Summary

The rectus abdominis muscle shows low electrical activity during pelvic retroversion exercises. However, lower portions of this abdominal muscle exhibit higher activity during lower limb lowering in individuals with pelvic imbalance.

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Area of Science:

  • Kinesiology
  • Biomedical Engineering
  • Physical Therapy

Background:

  • The rectus abdominis muscle plays a role in pelvic stabilization during rehabilitation for lower back disorders.
  • Understanding its electrical activity is crucial for optimizing physiotherapy routines.

Purpose of the Study:

  • To analyze the electrical activity of the rectus abdominis muscle during specific movements.
  • To compare muscle activity in individuals with and without pelvic balance.

Main Methods:

  • Electromyography was used to detect electrical activity in different portions of the rectus abdominis muscle.
  • 30 healthy students were divided into two groups: pelvic balance and pelvic unbalance.
  • Data analysis involved RMS values, normalization, and statistical treatment (Friedman test).

Main Results:

  • Rectus abdominis muscle portions showed low electrical activity during pelvic retroversion in both dorsal decubitus and orthostatic positions.
  • Lower limb lowering movements elicited more significant electrical activity.
  • In the pelvic unbalance group, lower portions of the rectus abdominis exhibited higher activity than upper portions.

Conclusions:

  • The rectus abdominis muscle demonstrates limited electrical engagement during simple pelvic retroversion.
  • Lower limb movements, particularly in individuals with pelvic imbalance, activate the lower rectus abdominis more intensely.
  • Findings suggest targeted exercises may be beneficial for rectus abdominis activation in rehabilitation.