By Topic

Motor unit control strategies of knee antagonist muscles during constant force and linearly increasing isometric contractions

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
M. Bernardi ; Bioeng. Lab., Louisiana State Univ. Med. Center, New Orleans, LA, USA ; M. Solomonow ; R. V. Baratta

The motor unit control strategies of the quadriceps and hamstrings muscles were studied during two different types of isometric contraction (step-wise and ramp increasing) by means of the EMG power density spectrum median frequency. It was found that each muscle has different motor unit control strategies when acting as agonist and antagonist. In the agonist muscle, ramp type contractions resulted in recruitment up to 60% of the maximal voluntary force, whereas step type contractions showed evidence of median frequency increase up to 50% of maximum. Antagonist recruitment was found up to a higher force level in extension tasks. It was concluded that the role of each muscle and the particular type of task have an influence on the control strategy employed

Published in:

Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Date of Conference:

3-6 Nov 1994