Gender differences in muscle activity during landing have been studied as a possible contributing factor to the greater incidence of anterior cruciate ligament injuries in women.
To compare root-mean-square (RMS) electromyography (EMG) of selected lower extremity muscles at initial contact (IC) and at peak knee internal-rotation (IR) moment in men and women during landing.
Preexperimental design static-group comparison.
16 varsity college soccer players (8 men, 8 women).
Main Outcome Measures:
EMG activity of the gluteus medius, lateral hamstrings, vastus lateralis, and rectus femoris during landing.
When RMS EMG of all muscles was considered simultaneously, no significant differences were detected between genders at IC or at peak knee IR moment.
Male and female college soccer players display similar relative muscle activities of the lower extremity during landing. Gender landing-control parameters might vary depending on the technique used to analyze muscle activity.
Garrison, Hart, and Ingersoll are with the Dept of Kinesiology, University of Virginia, Charlottesville, VA 22904-4407. Palmieri is with the Dept of Kinesiology, University of Michigan, Ann Arbor, MI 48109-2214. Kerrigan is with the Dept of Physical Medicine and Rehabilitation, University of Virginia, Charlottesville, VA 22908.