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Alterations in the Mechanical Response of Deep Dorsal Neck Muscles in Individuals Experiencing Whiplash-Associated Disorders Compared to Healthy Controls: An Ultrasound Study
Linköping University, Department of Medical and Health Sciences. Linköping University, Faculty of Medicine and Health Sciences. Univ Social Welf and Rehabil Sci, Iran.
Linköping University, Department of Medical and Health Sciences, Division of Physiotherapy. Linköping University, Faculty of Medicine and Health Sciences. Uppsala Univ, Sweden.ORCID iD: 0000-0003-2492-0306
Tarbiat Modares Univ, Iran.
Umeå Univ, Sweden.
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2018 (English)In: American Journal of Physical Medicine & Rehabilitation, ISSN 0894-9115, E-ISSN 1537-7385, Vol. 97, no 2, p. 75-82Article in journal (Refereed) Published
Abstract [en]

Objective The aim of this study was to investigate and compare the mechanical responses of dorsal neck muscles in individuals with whiplash-associated disorders (WAD) versus healthy individuals. Design This study included 36 individuals with WAD (26 women and 10 men) and 36 healthy controls (26 women and 10 men). Ultrasound imaging with speckle tracking was used to measure deformation and deformation rate in five dorsal neck muscles during a neck extension task. Results Compared with controls, individuals with WAD showed higher deformations of the semispinalis cervicis (P = 0.02) and multifidus (P = 0.002) muscles and higher deformation rates (P = 0.03 and 0.0001, respectively). Among individuals with WAD, multifidus deformation and deformation rate were significantly associated with pain, disability, and fatigue (r = 0.31-0.46, P = 0.0001-0.01). Conclusions These findings indicate that the mechanical responses of the deep dorsal neck muscles differ between individuals with WAD and healthy controls, possibly reflecting that these muscles use altered strategies while performing a neck extension task. This finding provides new insight into neck muscles pathology in patients with chronic WAD and may help improve rehabilitation programs. To Claim CME Credits Complete the self-assessment activity and evaluation online at http://www.physiatry.org/JournalCME CME Objectives Upon completion of this article, the reader should be able to: (1) Summarize the mechanical responses of dorsal neck muscles during loading of the neck muscles via an extension task in individuals with chronic whiplash associated disorders and healthy volunteers; (2) Differentiate mechanical responses between five dorsal neck muscles while loading the neck via an extension task; and (3) Describe the relationships between the mechanical responses of the dorsal neck muscles with the patients perception of neck pain, disability, and fatigue. Level Advanced Accreditation The Association of Academic Physiatrists is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The Association of Academic Physiatrists designates this Journal-based CME activity for a maximum of 0.5 AMA PRA Category 1 Credit(s). Physicians should only claim credit commensurate with the extent of their participation in the activity.

Place, publisher, year, edition, pages
LIPPINCOTT WILLIAMS & WILKINS , 2018. Vol. 97, no 2, p. 75-82
Keyword [en]
Whiplash Injury; Neck Muscle; Cervical Spine; Ultrasonography
National Category
Physiotherapy
Identifiers
URN: urn:nbn:se:liu:diva-145119DOI: 10.1097/PHM.0000000000000845ISI: 000423729500004PubMedID: 29016400OAI: oai:DiVA.org:liu-145119DiVA, id: diva2:1183675
Note

Funding Agencies|Swedish government; Swedish Social Insurance Agency through the REHSAM Foundation [RS2010/009]; Uppsala Orebro Regional Research Council Sweden; Swedish Research Council, Centre for Clinical Research Sormland at Uppsala University Sweden

Available from: 2018-02-19 Created: 2018-02-19 Last updated: 2018-03-08

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The full text will be freely available from 2019-02-01 12:44
Available from 2019-02-01 12:44

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