Head repositioning errors in normal student volunteers: a possible tool to assess the neck's neuromuscular system

Chiropractic & Osteopathy
Edward F OwensJoel G Pickar

Abstract

A challenge for practitioners using spinal manipulation is identifying when an intervention is required. It has been recognized that joint pain can interfere with the ability to position body parts accurately and that the recent history of muscle contraction can play a part in that interference. In this study, we tested whether repositioning errors could be induced in a normal population by contraction or shortening of the neck muscles. In the experimental protocol, volunteers free of neck problems first found a comfortable neutral head posture with eyes closed. They deconditioned their cervical muscles by moving their heads 5 times in either flexion/extension or lateral flexion and then attempted to return to the same starting position. Two conditioning sequences were interspersed within the task: hold the head in an extended or laterally flexed position for 10 seconds; or hold a 70% maximum voluntary contraction in the same position for 10 seconds. A computer-interfaced electrogoniometer was used to measure head position while a force transducer coupled to an auditory alarm signaled the force of isometric contraction. The difference between the initial and final head orientation was calculated in 3 orthogonal planes. Analysis...Continue Reading

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Citations

Jun 10, 2009·European Journal of Applied Physiology·Eva-Maj MalmströmMåns Magnusson
May 17, 2008·The Journal of Chiropractic Education·Lee R GoldenbergJoel G Pickar
May 5, 2009·The Journal of Orthopaedic and Sports Physical Therapy·Eythor Kristjansson, Julia Treleaven
Mar 28, 2017·Surgical and Radiologic Anatomy : SRA·Victor ChangYener N Yeni
Oct 27, 2020·Work : a Journal of Prevention, Assessment, and Rehabilitation·Zahra VahediEhsan Garosi
Mar 10, 2020·Musculoskeletal Science & Practice·Ibai López-de-Uralde-VillanuevaTamara Del Corral
May 27, 2020·The Journal of the American Osteopathic Association·Richard C Hallgren, Jacob J Rowan
Aug 12, 2014·Journal of Manipulative and Physiological Therapeutics·Richard C HallgrenLawrence L Prokop

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