This page was last updated September 1, 2000. Graduate Teaching Assistant , September 1992 - December 1992 School of Kinesiology, Simon Fraser University. Graduate Research Associate , December 1990 - August 1992 Department of Physiology, The University of Arizona. Coactivation of the antagonist muscle does not covary with steadiness in old adults. Steadiness is reduced and motor unit discharge is more variable in old adults.
Strength training improves the steadiness of slow lengthening contractions performed by old adults.
Sensitivity of magnetic resonance proton spin-spin relaxation time as an index of muscle activation.