Citation

Kumar S, Ferrari R, Narayan Y, Vieira ER. Am. J. Phys. Med. Rehabil. 2005; 84(5): 346-354.

Affiliation

Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada.

Copyright

(Copyright © 2005, Lippincott Williams and Wilkins)

DOI

unavailable

PMID

15829781

Abstract

OBJECTIVE: The purpose of this study was to determine the response of the cervical muscles to increasing low-velocity anterolateral impacts with the volunteer's trunk flexed to the right and left. METHODS: A total of 20 healthy volunteers were subjected to left anterolateral impacts of 4.0, 7.6, 10.7, and 13.4 m/sec and, sequentially, with trunk flexed either left or right. Bilateral electromyograms (EMGs) of the sternocleidomastoids, trapezii, and splenii capitis were recorded. DESIGN: At an acceleration of 13.4 m/sec, with the trunk flexed left, the left trapezius generated 48% of its maximal voluntary contraction EMG, whereas the right trapezius (contralateral to the left anterolateral impact) generated 38% of this variable. All other muscle generated

Language: en