Temporomandibular joint dysfunction and trapezius muscle fatigability

Detalhes bibliográficos
Autor(a) principal: Ritzel,CH
Data de Publicação: 2007
Outros Autores: Diefenthaeler,F, Rodrigues,AM, Guimarães,ACS, Vaz,MA
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Physical Therapy
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552007000500002
Resumo: INTRODUCTION: It has been suggested that pain increases trapezius muscle activation in patients with temporomandibular joint dysfunction (TMD). Changes in muscle activation might change muscle resistance to fatigue. The purpose of this study was to evaluate the fatigability of the trapezius muscle in patients with TMD. METHOD: Fourteen patients with TMD (clinically diagnosed and referred by a dentist) and eleven healthy subjects performed a fatigue test consisting of shoulder elevation performed at 70% of the maximal voluntary isometric contraction, which was maintained for 30 seconds. Electromyographic signals were obtained from the upper portion of the trapezius muscle (sampling frequency: 2000 Hz/channel). Consecutive segments of three seconds in duration each were extracted from the electromyographic signal and analyzed in the frequency domain using a Fast Fourier Transform algorithm. Linear regression analysis was applied to the consecutive median frequencies for each subject. The slope of the regression line was used to describe muscle fatigability. RESULTS: No changes were observed in fatigability between the right and left trapezius of either group or between the left trapezius of the healthy and TMD groups. The linear regression for median frequencies in the right trapezius of the TMD group showed a slope of -0.15 ± 0.33 (mean ± SD), which was smaller than the slope for the healthy group (-0.44 ± 0.46; p= 0.049). These results suggested that the fatigability of the right trapezius was lower in the TMD group than in the healthy group.
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spelling Temporomandibular joint dysfunction and trapezius muscle fatigabilitytemporomandibular joint dysfunctiontrapezius musclemedian frequencyEMGfatigueINTRODUCTION: It has been suggested that pain increases trapezius muscle activation in patients with temporomandibular joint dysfunction (TMD). Changes in muscle activation might change muscle resistance to fatigue. The purpose of this study was to evaluate the fatigability of the trapezius muscle in patients with TMD. METHOD: Fourteen patients with TMD (clinically diagnosed and referred by a dentist) and eleven healthy subjects performed a fatigue test consisting of shoulder elevation performed at 70% of the maximal voluntary isometric contraction, which was maintained for 30 seconds. Electromyographic signals were obtained from the upper portion of the trapezius muscle (sampling frequency: 2000 Hz/channel). Consecutive segments of three seconds in duration each were extracted from the electromyographic signal and analyzed in the frequency domain using a Fast Fourier Transform algorithm. Linear regression analysis was applied to the consecutive median frequencies for each subject. The slope of the regression line was used to describe muscle fatigability. RESULTS: No changes were observed in fatigability between the right and left trapezius of either group or between the left trapezius of the healthy and TMD groups. The linear regression for median frequencies in the right trapezius of the TMD group showed a slope of -0.15 ± 0.33 (mean ± SD), which was smaller than the slope for the healthy group (-0.44 ± 0.46; p= 0.049). These results suggested that the fatigability of the right trapezius was lower in the TMD group than in the healthy group.Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia 2007-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552007000500002Brazilian Journal of Physical Therapy v.11 n.5 2007reponame:Brazilian Journal of Physical Therapyinstname:Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)instacron:ABRAPG-FT10.1590/S1413-35552007000500002info:eu-repo/semantics/openAccessRitzel,CHDiefenthaeler,FRodrigues,AMGuimarães,ACSVaz,MAeng2008-12-11T00:00:00Zoai:scielo:S1413-35552007000500002Revistahttps://www.scielo.br/j/rbfis/https://old.scielo.br/oai/scielo-oai.phpcontato@rbf-bjpt.org.br||contato@rbf-bjpt.org.br1809-92461413-3555opendoar:2008-12-11T00:00Brazilian Journal of Physical Therapy - Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)false
dc.title.none.fl_str_mv Temporomandibular joint dysfunction and trapezius muscle fatigability
title Temporomandibular joint dysfunction and trapezius muscle fatigability
spellingShingle Temporomandibular joint dysfunction and trapezius muscle fatigability
Ritzel,CH
temporomandibular joint dysfunction
trapezius muscle
median frequency
EMG
fatigue
title_short Temporomandibular joint dysfunction and trapezius muscle fatigability
title_full Temporomandibular joint dysfunction and trapezius muscle fatigability
title_fullStr Temporomandibular joint dysfunction and trapezius muscle fatigability
title_full_unstemmed Temporomandibular joint dysfunction and trapezius muscle fatigability
title_sort Temporomandibular joint dysfunction and trapezius muscle fatigability
author Ritzel,CH
author_facet Ritzel,CH
Diefenthaeler,F
Rodrigues,AM
Guimarães,ACS
Vaz,MA
author_role author
author2 Diefenthaeler,F
Rodrigues,AM
Guimarães,ACS
Vaz,MA
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ritzel,CH
Diefenthaeler,F
Rodrigues,AM
Guimarães,ACS
Vaz,MA
dc.subject.por.fl_str_mv temporomandibular joint dysfunction
trapezius muscle
median frequency
EMG
fatigue
topic temporomandibular joint dysfunction
trapezius muscle
median frequency
EMG
fatigue
description INTRODUCTION: It has been suggested that pain increases trapezius muscle activation in patients with temporomandibular joint dysfunction (TMD). Changes in muscle activation might change muscle resistance to fatigue. The purpose of this study was to evaluate the fatigability of the trapezius muscle in patients with TMD. METHOD: Fourteen patients with TMD (clinically diagnosed and referred by a dentist) and eleven healthy subjects performed a fatigue test consisting of shoulder elevation performed at 70% of the maximal voluntary isometric contraction, which was maintained for 30 seconds. Electromyographic signals were obtained from the upper portion of the trapezius muscle (sampling frequency: 2000 Hz/channel). Consecutive segments of three seconds in duration each were extracted from the electromyographic signal and analyzed in the frequency domain using a Fast Fourier Transform algorithm. Linear regression analysis was applied to the consecutive median frequencies for each subject. The slope of the regression line was used to describe muscle fatigability. RESULTS: No changes were observed in fatigability between the right and left trapezius of either group or between the left trapezius of the healthy and TMD groups. The linear regression for median frequencies in the right trapezius of the TMD group showed a slope of -0.15 ± 0.33 (mean ± SD), which was smaller than the slope for the healthy group (-0.44 ± 0.46; p= 0.049). These results suggested that the fatigability of the right trapezius was lower in the TMD group than in the healthy group.
publishDate 2007
dc.date.none.fl_str_mv 2007-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552007000500002
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-35552007000500002
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1413-35552007000500002
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia
publisher.none.fl_str_mv Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia
dc.source.none.fl_str_mv Brazilian Journal of Physical Therapy v.11 n.5 2007
reponame:Brazilian Journal of Physical Therapy
instname:Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)
instacron:ABRAPG-FT
instname_str Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)
instacron_str ABRAPG-FT
institution ABRAPG-FT
reponame_str Brazilian Journal of Physical Therapy
collection Brazilian Journal of Physical Therapy
repository.name.fl_str_mv Brazilian Journal of Physical Therapy - Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia (ABRAPG-FT)
repository.mail.fl_str_mv contato@rbf-bjpt.org.br||contato@rbf-bjpt.org.br
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