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The Head-Neck Sensory Motor System$
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Alain Berthoz, Werner Graf, and P. P. Vidal

Print publication date: 1992

Print ISBN-13: 9780195068207

Published to Oxford Scholarship Online: March 2012

DOI: 10.1093/acprof:oso/9780195068207.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 15 October 2019

Relationship between Force and Cross-Sectional Area of Postcervical Muscles in Man: Influence of Variations in the Morphology of the Neck

Relationship between Force and Cross-Sectional Area of Postcervical Muscles in Man: Influence of Variations in the Morphology of the Neck

Chapter:
(p.148) Chapter 20 Relationship between Force and Cross-Sectional Area of Postcervical Muscles in Man: Influence of Variations in the Morphology of the Neck
Source:
The Head-Neck Sensory Motor System
Author(s):

Marie-Anne Mayoux-Benhamou

Marc Wybier

Jacques Patrick Barbet

Sylvain Labbé

Michel Revel

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780195068207.003.0020

Neck muscles have both dynamic and static functionalities, since they move the head in all directions and since they also have a postural role as antagonists of gravity. The static function depends on the strength and endurance of these muscles. The spine is a single weight-bearing column, and it depends solely upon muscular strength for both its lateral and its anteroposterior stabilization. The normal curvature observed in the sagittal plane is constantly subject to gravitational torques, which tends to increase lordosis and cause the head to fall forward. The neck muscles must work against these two effects of gravity. Calculating the absolute force given by neck muscles in static situations needs an accurate knowledge of forces present and of lever arms involved.

Keywords:   neck muscles, sagittal plane, static, gravity, spine, anteroposterior stabilization

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