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Force and Position Control in Humans - The Role of Augmented Feedback

Force and Position Control in Humans - The Role of Augmented Feedback

Published on: June 19, 2016

The effect of force-controlled biting on human posture control.

D Hellmann¹, T Stein², W Potthast³

¹Department of Prosthodontics, University of Heidelberg, Heidelberg, Germany.

Human Movement Science

|August 19, 2015

Summary

Submaximum jaw biting enhances postural stability by increasing kinematic precision and reducing muscle co-contraction variability. This study reveals how jaw motor activity influences neuromuscular control of human posture.

Keywords:

Balance Biting Craniomandibular system EMG Kinematics Posture Posture control

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Published on: June 19, 2016

Experimental Methods to Study Human Postural Control

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Published on: September 11, 2019

Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings

Postural Organization of Gait Initiation for Biomechanical Analysis Using Force Platform Recordings

Published on: July 26, 2022

Area of Science:

Biomechanics
Neuroscience
Human Posture Control

Background:

Neuromuscular effects of jaw motor activity on postural stability are known.
Mechanisms of functional coupling between the craniomandibular system (CMS) and human posture require further elucidation.

Purpose of the Study:

To investigate the effects of submaximum biting on joint kinematics (ankle, knee, hip).
To assess the impact of submaximum biting on leg muscle electromyographic (EMG) activity.
To analyze these effects during both bipedal narrow stance and single-leg stance.

Main Methods:

Twelve healthy young adults participated.
Force-controlled biting (FB) and non-biting (NB) conditions were compared.
A 3D motion-capture system recorded joint kinematics; EMG analyzed muscle co-contraction ratios (CVR).

Main Results:

No significant differences in mean joint angles between FB and NB.
Significantly reduced standard deviations of joint angles during FB.
Reduced ranges of motion, mean angular velocities, and CVR for five of six muscle pairs during FB.

Conclusions:

Submaximum biting does not alter the fundamental posture control strategy.
Jaw biting significantly affects neuromuscular co-contraction patterns.
These changes lead to enhanced kinematic precision in postural control.