Journal of Applied Physiology AJP: Gastrointestinal and Liver Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Appl Physiol 54: 51-58, 1983;
8750-7587/83 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by van Boxtel, A.
Right arrow Articles by van den Bosch, W. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by van Boxtel, A.
Right arrow Articles by van den Bosch, W. E.

Journal of Applied Physiology, Vol 54, Issue 1 51-58, Copyright © 1983 by American Physiological Society

ARTICLES

Changes in electromyogram power spectra of facial and jaw-elevator muscles during fatigue

A. van Boxtel, P. Goudswaard, G. M. van der Molen and W. E. van den Bosch

Endurance and changes in electromyogram (EMG) power spectra were investigated during a fatiguing static contraction at 50% of the maximum EMG amplitude in two jaw-elevator muscles (masseter and temporalis) and five facial muscles (frontalis, corrugator supercilii, zygomaticus major, orbicularis oris, and buccinator). Relatively high endurance was found in orbicularis oris, frontalis, and corrugator supercilii muscles; intermediate endurance was found in zygomaticus major, buccinator, and temporalis muscles; and low endurance was found in the masseter muscle. The last muscle showed a relatively fast linear decrease of the median frequency of the power spectrum. The other muscles showed a much slower, exponential decrease. The median frequency appeared to reflect reliably the changes in the shape of the power spectra during fatigue. Large differences between the shape of power spectra of different muscles in the unfatigued state were found. These, however, were unrelated to endurance and degree of spectral shift during fatigue.


This article has been cited by other articles:


Home page
 Anesth. Analg.Home page
S. L. Jinks, J. F. Antognini, and E. Carstens
Spectral Analysis of Movement Patterns During Anesthesia
Anesth. Analg., March 1, 2004; 98(3): 698 - 702.
[Abstract] [Full Text] [PDF]

Home page
 J. Dent. Res.Home page
J.W. Chung, C. Kim, and W.D. McCall Jr.
Effect of Sustained Contraction on Motor Unit Action Potentials and EMG Power Spectrum of Human Masticatory Muscles
J. Dent. Res., September 1, 2002; 81(9): 646 - 649.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online