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Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()

It is important to accurately estimate the electromyogram (EMG)/force relationship of triceps surae (TS) muscle for detecting strength deficit of tibalis anterior (TA) muscle. In literature, the protocol for recording EMG and force of dorsiflexion have been described, and the necessity for immobiliz...

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Autores principales: Siddiqi, Ariba, Arjunan, Sridhar P., Kumar, Dinesh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487336/
https://www.ncbi.nlm.nih.gov/pubmed/26150978
http://dx.doi.org/10.1016/j.mex.2015.02.006
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author Siddiqi, Ariba
Arjunan, Sridhar P.
Kumar, Dinesh
author_facet Siddiqi, Ariba
Arjunan, Sridhar P.
Kumar, Dinesh
author_sort Siddiqi, Ariba
collection PubMed
description It is important to accurately estimate the electromyogram (EMG)/force relationship of triceps surae (TS) muscle for detecting strength deficit of tibalis anterior (TA) muscle. In literature, the protocol for recording EMG and force of dorsiflexion have been described, and the necessity for immobilizing the ankle has been explained. However, there is a significant variability of the results among researchers even though they report the fixation of the ankle. We have determined that toe extension can cause significant variation in the dorsiflexion force and EMG of TS and this can occur despite following the current guidelines which require immobilizing the ankle. The results also show that there was a large increase in the variability of the force and the RMS of EMG of TS when the toes were not strapped compared with when they were strapped. Thus, with the current guidelines, where there are no instructions regarding the necessity of strapping the toes, the EMG/force relationship of TS could be incorrect and give an inaccurate assessment of the dorsiflexor TA strength. In summary, • Current methodology to estimate the dorsiflexor TA strength with respect to the TS activity, emphasizing on ankle immobilization is insufficient to prevent large variability in the measurements. • Toe extension during dorsiflexion was found to be one source of variability in estimating the TA strength. • It is recommended that guidelines for recording force and EMG from TA and TS muscles should require the strapping of the toes along with the need for immobilizing the ankle.
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spelling pubmed-44873362015-07-06 Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength() Siddiqi, Ariba Arjunan, Sridhar P. Kumar, Dinesh MethodsX Neuroscience It is important to accurately estimate the electromyogram (EMG)/force relationship of triceps surae (TS) muscle for detecting strength deficit of tibalis anterior (TA) muscle. In literature, the protocol for recording EMG and force of dorsiflexion have been described, and the necessity for immobilizing the ankle has been explained. However, there is a significant variability of the results among researchers even though they report the fixation of the ankle. We have determined that toe extension can cause significant variation in the dorsiflexion force and EMG of TS and this can occur despite following the current guidelines which require immobilizing the ankle. The results also show that there was a large increase in the variability of the force and the RMS of EMG of TS when the toes were not strapped compared with when they were strapped. Thus, with the current guidelines, where there are no instructions regarding the necessity of strapping the toes, the EMG/force relationship of TS could be incorrect and give an inaccurate assessment of the dorsiflexor TA strength. In summary, • Current methodology to estimate the dorsiflexor TA strength with respect to the TS activity, emphasizing on ankle immobilization is insufficient to prevent large variability in the measurements. • Toe extension during dorsiflexion was found to be one source of variability in estimating the TA strength. • It is recommended that guidelines for recording force and EMG from TA and TS muscles should require the strapping of the toes along with the need for immobilizing the ankle. Elsevier 2015-02-18 /pmc/articles/PMC4487336/ /pubmed/26150978 http://dx.doi.org/10.1016/j.mex.2015.02.006 Text en © 2015 The Authors http://creativecommons.org/licenses/by/4.0/ This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Neuroscience
Siddiqi, Ariba
Arjunan, Sridhar P.
Kumar, Dinesh
Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title_full Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title_fullStr Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title_full_unstemmed Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title_short Improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
title_sort improvement of isometric dorsiflexion protocol for assessment of tibialis anterior muscle strength()
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4487336/
https://www.ncbi.nlm.nih.gov/pubmed/26150978
http://dx.doi.org/10.1016/j.mex.2015.02.006
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