Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.

Patients suffering from work-related muscle pain (WRMP) fatigue earlier during exercise than healthy controls. Inadequate oxygen consumption and/or inadequate blood supply can influence the ability of the muscles to withstand fatigue. However, it remains unknown if oxygenation and hemodynamics are a...

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Autores principales:	Guilherme H Elcadi, Mikael Forsman, David M Hallman, Ulrika Aasa, Martin Fahlstrom, Albert G Crenshaw
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f14a5c3fe28848908fe3b01ab842e888
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spelling	oai:doaj.org-article:f14a5c3fe28848908fe3b01ab842e8882021-11-18T08:21:53ZOxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.1932-620310.1371/journal.pone.0095582https://doaj.org/article/f14a5c3fe28848908fe3b01ab842e8882014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24755957/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Patients suffering from work-related muscle pain (WRMP) fatigue earlier during exercise than healthy controls. Inadequate oxygen consumption and/or inadequate blood supply can influence the ability of the muscles to withstand fatigue. However, it remains unknown if oxygenation and hemodynamics are associated with early fatigue in muscles of WRMP patients. In the present study we applied near-infrared spectroscopy (NIRS) on the extensor carpi radialis (ECR) and trapezius (TD) muscles of patients with WRMP (n = 18) and healthy controls (n = 17). Our objective was to determine if there were group differences in endurance times for a low-level contraction of 15% maximal voluntary contraction (MVC)--sustained for 12-13 min, and to see if these differences were associated with differences in muscle oxygenation and hemodynamics. At baseline, oxygen saturation (StO2%) was similar between groups for the ECR, but StO2% was significantly lower for TD for the WRMP patients (76%) compared to controls (85%) (P<0.01). Also, baseline ECR blood flow was similar in the two groups. For both muscles there were a larger number of patients, compared to controls, that did not maintain the 15% MVC for the allotted time. Consequently, the endurance times were significantly shorter for the WRMP patients than controls (medians, ECR: 347 s vs. 582 s; TD: 430 s vs. 723 s respectively). Responses in StO2% during the contractions were not significantly different between groups for either muscle, i.e. no apparent difference in oxygen consumption. Overall, we interpret our findings to indicate that the early fatigue for our WRMP patients was not associated with muscle oxygenation and hemodynamics.Guilherme H ElcadiMikael ForsmanDavid M HallmanUlrika AasaMartin FahlstromAlbert G CrenshawPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e95582 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Guilherme H Elcadi Mikael Forsman David M Hallman Ulrika Aasa Martin Fahlstrom Albert G Crenshaw Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
description	Patients suffering from work-related muscle pain (WRMP) fatigue earlier during exercise than healthy controls. Inadequate oxygen consumption and/or inadequate blood supply can influence the ability of the muscles to withstand fatigue. However, it remains unknown if oxygenation and hemodynamics are associated with early fatigue in muscles of WRMP patients. In the present study we applied near-infrared spectroscopy (NIRS) on the extensor carpi radialis (ECR) and trapezius (TD) muscles of patients with WRMP (n = 18) and healthy controls (n = 17). Our objective was to determine if there were group differences in endurance times for a low-level contraction of 15% maximal voluntary contraction (MVC)--sustained for 12-13 min, and to see if these differences were associated with differences in muscle oxygenation and hemodynamics. At baseline, oxygen saturation (StO2%) was similar between groups for the ECR, but StO2% was significantly lower for TD for the WRMP patients (76%) compared to controls (85%) (P<0.01). Also, baseline ECR blood flow was similar in the two groups. For both muscles there were a larger number of patients, compared to controls, that did not maintain the 15% MVC for the allotted time. Consequently, the endurance times were significantly shorter for the WRMP patients than controls (medians, ECR: 347 s vs. 582 s; TD: 430 s vs. 723 s respectively). Responses in StO2% during the contractions were not significantly different between groups for either muscle, i.e. no apparent difference in oxygen consumption. Overall, we interpret our findings to indicate that the early fatigue for our WRMP patients was not associated with muscle oxygenation and hemodynamics.
format	article
author	Guilherme H Elcadi Mikael Forsman David M Hallman Ulrika Aasa Martin Fahlstrom Albert G Crenshaw
author_facet	Guilherme H Elcadi Mikael Forsman David M Hallman Ulrika Aasa Martin Fahlstrom Albert G Crenshaw
author_sort	Guilherme H Elcadi
title	Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
title_short	Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
title_full	Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
title_fullStr	Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
title_full_unstemmed	Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
title_sort	oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/f14a5c3fe28848908fe3b01ab842e888
work_keys_str_mv	AT guilhermehelcadi oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain AT mikaelforsman oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain AT davidmhallman oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain AT ulrikaaasa oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain AT martinfahlstrom oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain AT albertgcrenshaw oxygenationandhemodynamicsdonotunderlieearlymusclefatigueforpatientswithworkrelatedmusclepain
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Oxygenation and hemodynamics do not underlie early muscle fatigue for patients with work-related muscle pain.

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