Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Head repositioning errors in normal student volunteers: a possible tool to assess the neck's neuromuscular system. | BioMed Central Chiropractic Osteopathy Research Open Access Head repositioning errors in normal student volunteers a possible tool to assess the neck s neuromuscular system Edward F Owens Jr1 Charles NR Henderson1 M Ram Gudavalli1 3 and Joel G Pickar 2 3 Address Associate Professor Palmer Center for Chiropractic Research 741 Brady Street Davenport IA 52803 USA 2Professor Palmer Center for Chiropractic Research 741 Brady Street Davenport IA 52803 USA and 3Adjunct Associate Professor Dept of Biomedical Engineering University of Iowa Iowa City IA 52240 USA Email Edward F Owens - Charles NR Henderson - M Ram Gudavalli - Joel G Pickar - Corresponding author Published 06 March 2006 Received 21 December 2005 Accepted 06 March 2006 Chiropractic Osteopathy2006 14 5 doi l746-l340-l4-5 r This article is available from http content l4 l 5 2006Owens et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background 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. Methods 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 .
