A Comparison of Knee-Extension Torque Production with Biphasic versus Russian Current

in Journal of Sport Rehabilitation
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Neuromuscular electrical stimulation (NMES) can be used to prevent the atrophy and strength loss associated with immobilization.


To compare the effects of biphasic current and the modulated “Russian” current on muscular torque production during different contraction conditions.

Design, Setting, and Participants:

In a within-subjects design, 10 healthy subjects in an athletic training laboratory received NMES.


Isometric knee-extension torque was recorded with the Biodex™ under 4 conditions: maximum voluntary contraction (MVC; control), MVC superimposed with low-intensity stimulation (sham), MVC superimposed with high-intensity stimulation, and high-intensity stimulation only.

Main Outcome Measure:

Data normalized for body weight were analyzed using a 2 (current type) X 4 (condition) repeated-measures analysis of variance.


The main effect for current type was not significant, F1,9 = .03, P = .87.

William R. Holcomb and Shante Hill are with the College of Health at the University of North Florida, Jacksonville, FL 32224-2645. Shahin Golestani was with Creighton University at the time of the study.