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Reliability of diagnostic ultrasound in measuring the multifidus muscle

BACKGROUND: Ultrasound is frequently used to measure activity in the lumbar multifidus muscle (LMM). However previous reliability studies on diagnostic ultrasound and LMM have included a limited number of subjects and few have used Bland-Altman’s Limits of Agreement (LOA). Further one does not know...

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Autores principales: Skeie, Eirik Johan, Borge, Jan Arve, Leboeuf-Yde, Charlotte, Bolton, Jenni, Wedderkopp, Niels
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4397671/
https://www.ncbi.nlm.nih.gov/pubmed/25878771
http://dx.doi.org/10.1186/s12998-015-0059-6
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author Skeie, Eirik Johan
Borge, Jan Arve
Leboeuf-Yde, Charlotte
Bolton, Jenni
Wedderkopp, Niels
author_facet Skeie, Eirik Johan
Borge, Jan Arve
Leboeuf-Yde, Charlotte
Bolton, Jenni
Wedderkopp, Niels
author_sort Skeie, Eirik Johan
collection PubMed
description BACKGROUND: Ultrasound is frequently used to measure activity in the lumbar multifidus muscle (LMM). However previous reliability studies on diagnostic ultrasound and LMM have included a limited number of subjects and few have used Bland-Altman’s Limits of Agreement (LOA). Further one does not know if activity affects the subjects’ ability to contract the LMM. METHODS: From January 2012 to December 2012 an inter- and intra-examiner reliability study was carried out in a clinical setting. It consisted of a total of four experiments with 30 subjects in each study. Two experienced examiners performed all measurements. Ultrasound measurements were made of: 1. the LMM in the resting state, 2. during a contracted state, 3. on subsequent days, and, before and after walking. Reliability and agreement was tested for 1. resting LMM, 2. contracted LMM, and 3. thickness change in the LMM. Mean values of three measurements were used for statistical analysis for each spinal level. The intra-class correlation coefficient (ICC) 3.1 and 3.2 was used to test for reliability, and Bland-Altman’s LOA method to test for agreement. RESULTS: All of the studies indicate high levels of reliability, but as the LMM thickness increased (increasing contraction) the agreement between examiners was poorer than for low levels of contraction. CONCLUSIONS: The use of diagnostic ultrasound to measure the LMM seems to be reliable in subjects who have little or no change in thickness of the LMM with contraction.
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spelling pubmed-43976712015-04-16 Reliability of diagnostic ultrasound in measuring the multifidus muscle Skeie, Eirik Johan Borge, Jan Arve Leboeuf-Yde, Charlotte Bolton, Jenni Wedderkopp, Niels Chiropr Man Therap Research BACKGROUND: Ultrasound is frequently used to measure activity in the lumbar multifidus muscle (LMM). However previous reliability studies on diagnostic ultrasound and LMM have included a limited number of subjects and few have used Bland-Altman’s Limits of Agreement (LOA). Further one does not know if activity affects the subjects’ ability to contract the LMM. METHODS: From January 2012 to December 2012 an inter- and intra-examiner reliability study was carried out in a clinical setting. It consisted of a total of four experiments with 30 subjects in each study. Two experienced examiners performed all measurements. Ultrasound measurements were made of: 1. the LMM in the resting state, 2. during a contracted state, 3. on subsequent days, and, before and after walking. Reliability and agreement was tested for 1. resting LMM, 2. contracted LMM, and 3. thickness change in the LMM. Mean values of three measurements were used for statistical analysis for each spinal level. The intra-class correlation coefficient (ICC) 3.1 and 3.2 was used to test for reliability, and Bland-Altman’s LOA method to test for agreement. RESULTS: All of the studies indicate high levels of reliability, but as the LMM thickness increased (increasing contraction) the agreement between examiners was poorer than for low levels of contraction. CONCLUSIONS: The use of diagnostic ultrasound to measure the LMM seems to be reliable in subjects who have little or no change in thickness of the LMM with contraction. BioMed Central 2015-04-15 /pmc/articles/PMC4397671/ /pubmed/25878771 http://dx.doi.org/10.1186/s12998-015-0059-6 Text en © Skeie et al.; licensee BioMed Central. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Skeie, Eirik Johan
Borge, Jan Arve
Leboeuf-Yde, Charlotte
Bolton, Jenni
Wedderkopp, Niels
Reliability of diagnostic ultrasound in measuring the multifidus muscle
title Reliability of diagnostic ultrasound in measuring the multifidus muscle
title_full Reliability of diagnostic ultrasound in measuring the multifidus muscle
title_fullStr Reliability of diagnostic ultrasound in measuring the multifidus muscle
title_full_unstemmed Reliability of diagnostic ultrasound in measuring the multifidus muscle
title_short Reliability of diagnostic ultrasound in measuring the multifidus muscle
title_sort reliability of diagnostic ultrasound in measuring the multifidus muscle
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4397671/
https://www.ncbi.nlm.nih.gov/pubmed/25878771
http://dx.doi.org/10.1186/s12998-015-0059-6
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