Acoustic myography reflects force changes during dynamic concentric and eccentric contractions of the human biceps brachii muscle

Dalton P.A. and Stokes M.J. (1991) Acoustic myography reflects force changes during dynamic concentric and eccentric contractions of the human biceps brachii muscle. European Journal of Applied Physiology and Occupational Physiology, 63 6: 412-416. doi:10.1007/BF00868071


Author Dalton P.A.
Stokes M.J.
Title Acoustic myography reflects force changes during dynamic concentric and eccentric contractions of the human biceps brachii muscle
Journal name European Journal of Applied Physiology and Occupational Physiology   Check publisher's open access policy
ISSN 0301-5548
Publication date 1991
Sub-type Article (original research)
DOI 10.1007/BF00868071
Volume 63
Issue 6
Start page 412
End page 416
Total pages 5
Publisher Springer-Verlag
Subject 2739 Public Health, Environmental and Occupational Health
1314 Physiology
Abstract The relationship between acoustic myography (AMG), electromyography (EMG) and force during submaximal dynamic contractions was examined in the biceps brachii muscles of eight healthy males (aged 17-26 years). Different weights were lifted and lowered at a constant speed, using a wall pulley system, to perform concentric and eccentric contractions, respectively. Integrated AMG (iAMG) and integrated EMG (iEMG) activity both increased linearly with force during concentric (iAMG r=0.94; iEMG r=0.99) and eccentric (iAMG r=0.90; iEMG r=0.94) contractions. The slopes of the concentric regression lines were significantly different from the eccentric slopes (P<0.01) for both iAMG and iEMG with concentric contractions showing greater levels of activity. The results indicated that AMG can be used to detect changes in force during dynamic contractions which has important implications for the use of AMG in rehabilitation. The differences in iAMG activity between concentric and eccentric contractions are discussed in relationship to the origin of the AMG signal.
Keyword Acoustic myography
Biceps brachii muscle
Concentric contractions
Eccentric contractions
Electromyography
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 49 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 58 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 05 Jul 2016, 05:59:23 EST by System User