Index to Chiropractic Literature
Index to Chiropractic Literature
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ID 23637
  Title Activation of rectus capitis posterior major muscles during voluntary retraction of the head in asymptomatic subjects
Journal J Manipulative Physiol Ther. 2014 Jul-Aug;37(6):433-440
Peer Review Yes
Publication Type Article

Objective: The purpose of this study was to assess levels of electromyographic activity measured from rectus capitis posterior major (RCPM) muscles of asymptomatic subjects as their heads moved from a self-defined neutral position to a retracted position.

Methods: A 2 × 2 within-subjects factorial research design was used. Disposable, intramuscular electrodes were used to collect electromyographic data from asymptomatic subjects between the ages of 20 and 40 years old. Data analysis was performed using mixed effects β regression models.

Results: Activation of RCPM muscles was found to significantly increase (P < .0001) as the head moved from a self-defined neutral position to a retracted position. Rectus capitis posterior major muscle activation levels, measured as a function of head position, have not been previously reported.

Conclusions: The findings from this study showed that RCPM muscle activation significantly increases during voluntary retraction of the head.

This abstract is reproduced with the permission of the publisher; full text is available by subscription. Click on the above link and select a publisher from PubMed’s LinkOut feature.


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