Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study

Electromyographic biofeedback (EMG-BF) is a technique that can contribute to the improvement of muscle tone and control in the rehabilitation process after injury. The aim of this research was to determine the effectiveness of EMG-BF in increasing the electromyographic activity of the vastus lateral...

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Main Authors: Verónica Morales-Sánchez, Rafael E. Reigal, Raul Antunes, Rui Matos, Antonio Hernández-Mendo, Diogo Monteiro
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Muscles
Subjects:
Online Access:https://www.mdpi.com/2813-0413/2/4/28
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author Verónica Morales-Sánchez
Rafael E. Reigal
Raul Antunes
Rui Matos
Antonio Hernández-Mendo
Diogo Monteiro
author_facet Verónica Morales-Sánchez
Rafael E. Reigal
Raul Antunes
Rui Matos
Antonio Hernández-Mendo
Diogo Monteiro
author_sort Verónica Morales-Sánchez
collection DOAJ
description Electromyographic biofeedback (EMG-BF) is a technique that can contribute to the improvement of muscle tone and control in the rehabilitation process after injury. The aim of this research was to determine the effectiveness of EMG-BF in increasing the electromyographic activity of the vastus lateralis after knee injury. The sample consisted of four individuals who had undergone surgery or rehabilitation to resolve either a partial meniscal tear or a patellar tendon strain. The intervention consisted of a program of ten sessions of EMG-BF work. Twelve trials were performed in each session, in which participants were instructed to target the muscle tension produced by the vastus lateralis of the uninjured hemilateral limb. Of the twelve trials in each session, the first three and the last three were performed without feedback, and the intermediate six with feedback. The recording of muscle activity was performed using CY-351/2 Mioback equipment, which allowed the amplitude of the electromyographic signal to be evaluated. The results indicated that the sample analyzed reached greater amplitude during the biofeedback trials, both for the maximum (Z = −13.43, <i>p</i> < 0.001, Cohen’s d = 0.64, 95% CI (0.27, 1.01)) and mean (Z = −7.26, <i>p</i> < 0.001, Cohen’s d = 0.24, 95% CI (−0.12, 0.60)) values. The amplitude also increased throughout the ten sessions, both for the maximum (Z = −3.06, <i>p</i> < 0.01, Cohen’s d = 1.37, 95% CI (0.29, 2.45)) and mean (Z = −3.06, <i>p</i> < 0.01, Cohen’s d = 1.20, 95% CI (0.34, 2.08)) values. Thus, the results highlight the efficacy of this technique in improving muscle activity, suggesting that it is a useful therapeutic procedure in injury recovery.
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spelling doaj.art-9871109352e2430093254682a3ab751d2023-12-22T14:28:52ZengMDPI AGMuscles2813-04132023-11-012436137310.3390/muscles2040028Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case StudyVerónica Morales-Sánchez0Rafael E. Reigal1Raul Antunes2Rui Matos3Antonio Hernández-Mendo4Diogo Monteiro5Social Psychology, Social Work and Social Services and Social Anthropology, University of Málaga, 29071 Málaga, SpainSocial Psychology, Social Work and Social Services and Social Anthropology, University of Málaga, 29071 Málaga, SpainESECS-Polytechnic of Leiria, 2411-901 Leiria, PortugalESECS-Polytechnic of Leiria, 2411-901 Leiria, PortugalSocial Psychology, Social Work and Social Services and Social Anthropology, University of Málaga, 29071 Málaga, SpainESECS-Polytechnic of Leiria, 2411-901 Leiria, PortugalElectromyographic biofeedback (EMG-BF) is a technique that can contribute to the improvement of muscle tone and control in the rehabilitation process after injury. The aim of this research was to determine the effectiveness of EMG-BF in increasing the electromyographic activity of the vastus lateralis after knee injury. The sample consisted of four individuals who had undergone surgery or rehabilitation to resolve either a partial meniscal tear or a patellar tendon strain. The intervention consisted of a program of ten sessions of EMG-BF work. Twelve trials were performed in each session, in which participants were instructed to target the muscle tension produced by the vastus lateralis of the uninjured hemilateral limb. Of the twelve trials in each session, the first three and the last three were performed without feedback, and the intermediate six with feedback. The recording of muscle activity was performed using CY-351/2 Mioback equipment, which allowed the amplitude of the electromyographic signal to be evaluated. The results indicated that the sample analyzed reached greater amplitude during the biofeedback trials, both for the maximum (Z = −13.43, <i>p</i> < 0.001, Cohen’s d = 0.64, 95% CI (0.27, 1.01)) and mean (Z = −7.26, <i>p</i> < 0.001, Cohen’s d = 0.24, 95% CI (−0.12, 0.60)) values. The amplitude also increased throughout the ten sessions, both for the maximum (Z = −3.06, <i>p</i> < 0.01, Cohen’s d = 1.37, 95% CI (0.29, 2.45)) and mean (Z = −3.06, <i>p</i> < 0.01, Cohen’s d = 1.20, 95% CI (0.34, 2.08)) values. Thus, the results highlight the efficacy of this technique in improving muscle activity, suggesting that it is a useful therapeutic procedure in injury recovery.https://www.mdpi.com/2813-0413/2/4/28electromyographic biofeedbackretrainingmuscle rehabilitationkneepatellar tendonmeniscus
spellingShingle Verónica Morales-Sánchez
Rafael E. Reigal
Raul Antunes
Rui Matos
Antonio Hernández-Mendo
Diogo Monteiro
Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
Muscles
electromyographic biofeedback
retraining
muscle rehabilitation
knee
patellar tendon
meniscus
title Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
title_full Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
title_fullStr Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
title_full_unstemmed Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
title_short Efficacy of Electromyographic Biofeedback in the Recovery of the Vastus Lateralis after Knee Injury: A Single-Group Case Study
title_sort efficacy of electromyographic biofeedback in the recovery of the vastus lateralis after knee injury a single group case study
topic electromyographic biofeedback
retraining
muscle rehabilitation
knee
patellar tendon
meniscus
url https://www.mdpi.com/2813-0413/2/4/28
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