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A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects
The purpose of this study was to examine the test-retest reliability of normalization methods for the infraspinatus muscle in a group of healthy subjects. Twelve healthy subjects (male=8, female=4) performed the maximal voluntary isometric contraction (MVIC) with examiner`s resistance, MVIC with a d...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Akademia Wychowania Fizycznego w Katowicach
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661896/ https://www.ncbi.nlm.nih.gov/pubmed/23717356 http://dx.doi.org/10.2478/hukin-2013-0007 |
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author | Ha, Sung-min Cynn, Heon-seock Kwon, Oh-yun Park, Kyue-nam Kim, Gyoung-mo |
author_facet | Ha, Sung-min Cynn, Heon-seock Kwon, Oh-yun Park, Kyue-nam Kim, Gyoung-mo |
author_sort | Ha, Sung-min |
collection | PubMed |
description | The purpose of this study was to examine the test-retest reliability of normalization methods for the infraspinatus muscle in a group of healthy subjects. Twelve healthy subjects (male=8, female=4) performed the maximal voluntary isometric contraction (MVIC) with examiner`s resistance, MVIC with a digital tension-meter (MVIC-DT), and sub-MVIC methods. Surface electromyography (EMG) signals were recorded from the infraspinatus muscles according to normalization methods. Reliability was analyzed using the intra-class coefficient (ICC), standard error of measurement (SEM), and minimal detectable difference (MDD). The results of the present study demonstrated that the sub-MVIC method has excellent test-retest reliability (ICC=0.92) with a relatively small SEM (5.9 mV) and MDD(95) (16.4 mV), compared to MVIC-DT (ICC=0.73; SEM=11.2 mV; MDD(95): 31 mV) and MVIC-E (ICC=0.5; SEM=15.7 mV; MDD(95): 43.6 mV). These findings provide evidence that sub-MVIC is more appropriate for comparing the EMG activity for the infraspinatus muscle as a normalization method. If MVIC for normalization is needed, MVIC-DT is more appropriate than MVIC-E. |
format | Online Article Text |
id | pubmed-3661896 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Akademia Wychowania Fizycznego w Katowicach |
record_format | MEDLINE/PubMed |
spelling | pubmed-36618962013-05-28 A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects Ha, Sung-min Cynn, Heon-seock Kwon, Oh-yun Park, Kyue-nam Kim, Gyoung-mo J Hum Kinet Research Article The purpose of this study was to examine the test-retest reliability of normalization methods for the infraspinatus muscle in a group of healthy subjects. Twelve healthy subjects (male=8, female=4) performed the maximal voluntary isometric contraction (MVIC) with examiner`s resistance, MVIC with a digital tension-meter (MVIC-DT), and sub-MVIC methods. Surface electromyography (EMG) signals were recorded from the infraspinatus muscles according to normalization methods. Reliability was analyzed using the intra-class coefficient (ICC), standard error of measurement (SEM), and minimal detectable difference (MDD). The results of the present study demonstrated that the sub-MVIC method has excellent test-retest reliability (ICC=0.92) with a relatively small SEM (5.9 mV) and MDD(95) (16.4 mV), compared to MVIC-DT (ICC=0.73; SEM=11.2 mV; MDD(95): 31 mV) and MVIC-E (ICC=0.5; SEM=15.7 mV; MDD(95): 43.6 mV). These findings provide evidence that sub-MVIC is more appropriate for comparing the EMG activity for the infraspinatus muscle as a normalization method. If MVIC for normalization is needed, MVIC-DT is more appropriate than MVIC-E. Akademia Wychowania Fizycznego w Katowicach 2013-03-28 /pmc/articles/PMC3661896/ /pubmed/23717356 http://dx.doi.org/10.2478/hukin-2013-0007 Text en © Editorial Committee of Journal of Human Kinetics This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Research Article Ha, Sung-min Cynn, Heon-seock Kwon, Oh-yun Park, Kyue-nam Kim, Gyoung-mo A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title | A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title_full | A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title_fullStr | A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title_full_unstemmed | A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title_short | A Reliability of Electromyographic Normalization Methods for the Infraspinatus Muscle in Healthy Subjects |
title_sort | reliability of electromyographic normalization methods for the infraspinatus muscle in healthy subjects |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3661896/ https://www.ncbi.nlm.nih.gov/pubmed/23717356 http://dx.doi.org/10.2478/hukin-2013-0007 |
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