Abstract

BackgroundNo study relating the changes obtained in the architecture of erector spinae (ES) muscle were registered with ultrasound and different intensities of muscle contraction recorded by surface EMG (electromyography) on the ES muscle was found. The aim of this study was analyse the relationship in the response of the ES muscle during isometric moderate and light lumbar isometric extension considering architecture and functional muscle variables.MethodsCross-sectional study. 46 subjects (52% men) with a group mean age of 30.4 (±7.78). The participants developed isometric lumbar extension while performing moderate and low isometric trunk and hip extension in a sitting position with hips flexed 90 degrees and the lumbar spine in neutral position. During these measurements, electromyography recordings and ultrasound images were taken bilaterally. Bilaterally pennation angle, muscle thickness, torque and muscle activation were measured. This study was developed at the human movement analysis laboratory of the Health Science Faculty of the University of Malaga (Spain).ResultsStrong and moderate correlations were found at moderate and low intensities contraction between the variable of the same intensity, with correlation values ranging from 0.726 (Torque Moderate – EMG Left Moderate) to 0.923 (Angle Left Light – Angle Right Light) (p < 0.001). This correlation is observed between the variables that describe the same intensity of contraction, showing a poor correlation between variables of different intensities.ConclusionThere is a strong relationship between architecture and function variables of ES muscle when describe an isometric lumbar extension at light or moderate intensity.

Highlights

  • No study relating the changes obtained in the architecture of erector spinae (ES) muscle were registered with ultrasound and different intensities of muscle contraction recorded by surface EMG on the ES muscle was found

  • The results show the minimum, maximum, average and standard deviation of the characteristic of sample

  • Considering that we investigated a group of young adult subjects whose anthropometric indices were normal for their perception of quality of life (EQ EuroQoL 5D (5D) and EQ VAS), general health (SF-12 physical component state and Short form 12 (SF-12) mental component state), and level of musculoskeletal disabilities, both in general (OMPQ) and in the back region (RMQ)

Read more

Summary

Introduction

No study relating the changes obtained in the architecture of erector spinae (ES) muscle were registered with ultrasound and different intensities of muscle contraction recorded by surface EMG (electromyography) on the ES muscle was found. In the field of biomechanics, US (ultrasound) has become a widely used tool to describe changes in muscular architecture produced during muscle contraction [4,14,15,16]. Surface electromyography has been used in different studies related to both muscle strength and muscle activation levels [14,17,18,19]. Some studies have made use of surface electromyography to analyse the level of activation of the paraspinal musculature with different types of contraction [17,18]. Its ease of use has allowed it to be a widely used tool in research and with great potential in clinical practice

Objectives
Methods
Results
Discussion
Conclusion
Full Text
Published version (Free)

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 call