Electromyographic analysis of transversus abdominis/internal oblique muscles during the execution of pelvic patterns of proprioceptive neuromuscular facilitation

Josepha Karinne De Oliveira Ferro,Andrea Lemos,Paulo José Moté Barboza,Thaís De Siqueira Manta,José Vicente Pereira Martins,Alberto Galvão De Moura Filho,Bruna Rhayane Da Cunha Melo Ribeiro,Keytte Camilla Souza De Amorim,Daniella Araújo De Oliveira

doi:10.52329/avanmed.6

Abstract

Objective: To evaluate the electromyographic response of the transversus abdominis/internal oblique muscles (TrA/IO) during the execution of the four pelvic patterns of proprioceptive neuromuscular facilitation (PNF). Methods: Cross-sectional study. Were evaluated 21 women aged 18-38 years. The right TrA/IO complex, ipsilateral to the execution of a PNF combination of isotonics technique was monitored by surface electromyography. Three repetitions were performed with two-minute intervals between them in the four PNF pelvic patterns: anterior elevation, posterior depression, anterior depression, and posterior elevation. For the analysis of the electromyographic signal, a period of 500ms adjusted to the central value was extracted and the Root Mean Square amplitude was analyzed. Descriptive statistics and ANOVA test was used with a 95% confidence interval. Results: There was a higher TrA/IO activity in the concentric phase in the anterior elevation pattern (36.2 ± 32.3%) when compared to previous depression (19.5 μV ± 12.9), posterior elevation (16.1 μV ± 8.7), posterior depression 14.6μV ± 5.9). In addition, in the antero-elevation there is greater activation of the TrA/IO muscle complex when compared to the other patterns (p <0.01). Conclusion: The higher EMG response of the TrA/IO found in the anterior elevation pattern reveals its usefulness for clinical use.

Highlights

The abdominal muscles play an important role in lumbar and pelvic dynamic stability, the transversus abdominis being the main stabilizing muscle being activated before the other abdominal wall muscles to protect the spine from internal and external overloads, in addition to preparing the body to perform movements and maintain postural balance.[1,2]TIn order to perform these functions, an adequate neuromuscular control is necessary and the central nervous system receives afferent information from peripheral mechanoreceptors, interprets, plans and coordinates the execution of mechanisms to maintain stability and movements in response to demand.[3]Proprioceptive Neuromuscular Facilitation (PNF) is a type of functional approach based on motor control and its effects on learning
To evaluate the electromyographic response of the transversus abdominis/internal oblique muscles (TrA/IO) during the execution of the four pelvic patterns of proprioceptive neuromuscular facilitation (PNF)
In the antero-elevation there is greater activation of the TrA/IO muscle complex when compared to the other patterns (p

Summary

Introduction

The abdominal muscles play an important role in lumbar and pelvic dynamic stability, the transversus abdominis being the main stabilizing muscle being activated before the other abdominal wall muscles to protect the spine from internal and external overloads, in addition to preparing the body to perform movements and maintain postural balance.[1,2]TIn order to perform these functions, an adequate neuromuscular control is necessary and the central nervous system receives afferent information from peripheral mechanoreceptors, interprets, plans and coordinates the execution of mechanisms to maintain stability and movements in response to demand.[3]Proprioceptive Neuromuscular Facilitation (PNF) is a type of functional approach based on motor control and its effects on learning. Tactile stimulation and external opposition to the movement (resistance) are extremely important to improve muscular strength and hypertrophy, contributing to adaptations such as increased recruitment and synchronization of motor units, coactivation of agonists and antagonists and changes in the descending neural pathways and can be evaluated through of electromyographic records.[4,5]. PNF pelvic patterns promote lumbar extension and activation of the stabilizing musculature of the trunk, reducing pain.[6] Among the techniques of PNF, the combination of isotonics, which seems to be one of the most effective when it is intended to increase strength and improve motor control. Promotes the activation of agonist muscles with concentric, isometric and eccentric contraction, through resistance, without relaxation, leading to the activation of this muscle in a wide and complete manner in the same intervention.[4,5,7]

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Conclusion