The Tohoku Journal of Experimental Medicine
Online ISSN : 1349-3329
Print ISSN : 0040-8727
ISSN-L : 0040-8727
Electromyographic (EMG) Study of the Elbow Flexors during Supination and Pronation of the Forearm
AKIRA NAITOMICHIHIRO YAJIMAHIDEHIKO FUKAMACHIKOJI USHIKOSHIYING-JIE SUNYOSHIFUSA SHIMIZU
Author information
JOURNAL FREE ACCESS

1995 Volume 175 Issue 4 Pages 285-288

Details
Abstract

NAITO, A., YAJIMA, M., FUKAMACHI, H., USHIKOSHI, K., SUN, Y.-J. and SHIMIZU, Y. Electromyographic (EMG) Study of the Elbow Flexors during Supination and Pronation of the Forearm. Tohoku J. Exp. Med., 1995, 175 (4), 285-288 - Activities of the elbow flexors during supination and pronation of the forearm in a normal human volunteer were studied by an electromyography (EMG). The volunteer performed the movement slowly or quickly holding elbow flexion at various angles with or without a load. The biceps brachii showed an increase and a decrease of EMG activities during supination and pronation, respectively. The brachialis and brachioradialis showed a reduction and an increment of EMU activities accompanied by an increase and a decrease of EMG activities in the biceps brachii, respectively. These findings seem to indicate that reciprocal contractions among the elbow flexors permit the biceps brachii to work for supination without an induction of elbow flexion.

Content from these authors
© Tohoku University Medical Press
Previous article Next article
feedback
Top