Auditory EMG Feedback during a Sustained Submaximum Isometric Contraction.
ARMY MEDICAL RESEARCH LAB FORT KNOX KY
Pagination or Media Count:
Two groups of male volunteers maintained a submaximum isometric contraction of the elbow flexors to exhaustion. During the endurance session, each subject was required to exert a force equal to 50 of his maximum voluntary strength and to subjectively rate the increasing intensity of pain resulting from the isometric pull. Continuous recordings of electromyographic activity of the biceps muscle were accomplished through standard surface electrode techniques. The experimental group was provided with direct auditory feedback of the EMG signals. Although endurance time did not increase when auditory EMG was provided, the level of muscle activity required to sustain the contraction was significantly reduced. These results suggested that auditory EMG provided a situation where the endurance task was accomplished with greater efficiency. Author
- Anatomy and Physiology