Journal article
Time to failure of a sustained contraction is predicted by target torque and initial electromyographic bursts in elbow flexor muscles
Muscle & nerve, Vol.35(5), pp.657-666
05/2007
DOI: 10.1002/mus.20752
PMID: 17294440
Abstract
The purpose of the study was to identify factors that could predict differences among individuals in the time to failure of a submaximal contraction. Twenty subjects (10 men, 25+/-6 years) supported an inertial load equivalent to 20% of the maximal voluntary contraction (MVC) force with the elbow flexor muscles for as long as possible. The time to failure was predicted by the frequency of electromyographic bursts in the long head of biceps brachii during the first 20% of the contraction, the amplitude of bursts in the brachioradialis during the first 20% of the contraction, and the target torque. Subjects who could sustain the task longer exhibited greater initial (first 20% of contraction) electromyographic burst frequency in the long head of biceps brachii, lower initial burst amplitudes in the brachioradialis muscle, and lower target torque. Knowing the main predictors of a submaximal fatiguing contraction with the elbow flexor muscles may assist clinicians in personalizing therapeutic interventions.
Details
- Title: Subtitle
- Time to failure of a sustained contraction is predicted by target torque and initial electromyographic bursts in elbow flexor muscles
- Creators
- Thorsten Rudroff - Department of Integrative Physiology, University of Colorado, Carlson 202G, 354 UCB, Boulder, Colorado 80309-0354, USA. thorsten.rudroff@colorado.eduEvangelos A ChristouBrach PostonJens Bojsen-MøllerRoger M Enoka
- Resource Type
- Journal article
- Publication Details
- Muscle & nerve, Vol.35(5), pp.657-666
- Publisher
- United States
- DOI
- 10.1002/mus.20752
- PMID
- 17294440
- ISSN
- 0148-639X
- eISSN
- 1097-4598
- Grant note
- NS43275 / NINDS NIH HHS
- Language
- English
- Date published
- 05/2007
- Academic Unit
- Neurology; Health and Human Physiology
- Record Identifier
- 9984002350402771
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