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Merhof, Dorit

Biomedical Engineering / Biomedizinische Technik

Joint Journal of the German Society for Biomedical Engineering in VDE and the Austrian and Swiss Societies for Biomedical Engineering and the German Society of Biomaterials

Editor-in-Chief: Dössel, Olaf

Editorial Board: Augat, Peter / Habibović, Pamela / Haueisen, Jens / Jahnen-Dechent, Wilhelm / Jockenhoevel, Stefan / Knaup-Gregori, Petra / Leonhardt, Steffen / Plank, Gernot / Radermacher, Klaus M. / Schkommodau, Erik / Stieglitz, Thomas / Boenick, Ulrich / Jaramaz, Branislav / Kraft, Marc / Lenarz, Thomas / Lenthe, Harry / Lo, Benny / Mainardi, Luca / Micera, Silvestro / Penzel, Thomas / Robitzki, Andrea A. / Schaeffter, Tobias / Snedeker, Jess G. / Sörnmo, Leif / Sugano, Nobuhiko / Werner, Jürgen /


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5-year IMPACT FACTOR: 1.390

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1862-278X
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Volume 61, Issue 6

Issues

Volume 57 (2012)

Effect of toe extension on EMG of triceps surae muscles during isometric dorsiflexion

Ariba Siddiqi
  • Biosignals Lab, Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3000, Australia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Sridhar P. Arjunan
  • Corresponding author
  • Biosignals Lab, Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3000, Australia
  • Email
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Dinesh Kumar
  • Biosignals Lab, Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3000, Australia
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2016-03-26 | DOI: https://doi.org/10.1515/bmt-2014-0135

Abstract

The protocol for estimating force of contraction by triceps surae (TS) muscles requires the immobilization of the ankle during dorsiflexion and plantar flexion. However, large variability in the results has been observed. To identify the cause of this variability, experiments were conducted where ankle dorsiflexion force and electromyogram (EMG) of the TS were recorded under two conditions: (i) toes were strapped and (ii) toes were unstrapped, with all other conditions such as immobilization of the ankle remaining unchanged. The root mean square (RMS) of the EMG and the force were analyzed and one-tail Student’s t-test was performed for significance between the two conditions. The RMS of the EMG from TS muscles was found to be significantly higher (~55%) during dorsiflexion with toes unstrapped compared with when the toes were strapped. The torque corresponding to dorsiflexion was also higher with toes unstrapped. Our study has shown that it is important to strap the toes when measuring the torque at the ankle and EMG of the TS muscles.

Keywords: antagonist; dorsiflexion; electromyogram (EMG); toe extension; triceps surae

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About the article

Corresponding author: Sridhar P. Arjunan, Biosignals Lab, Electrical and Computer Engineering, RMIT University, Melbourne, VIC 3000, Australia, Phone: +61 3 9925 5234, E-mail:


Received: 2014-10-22

Accepted: 2016-02-20

Published Online: 2016-03-26

Published in Print: 2016-12-01


Conflict of interest statement: Authors have no affiliations with or involvement in any organization or entity with any financial interest, or nonfinancial interest in the subject matter or materials discussed in this article.


Citation Information: Biomedical Engineering / Biomedizinische Technik, Volume 61, Issue 6, Pages 607–610, ISSN (Online) 1862-278X, ISSN (Print) 0013-5585, DOI: https://doi.org/10.1515/bmt-2014-0135.

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