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Direction-specific impairments in cervical range of motion in women with chronic neck pain: influence of head posture and gravitationally induced torque
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research. Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden.ORCID iD: 0000-0002-2804-3200
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research. Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden.ORCID iD: 0000-0001-7543-4397
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research. Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Umeå, Sweden.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences, Occupational health science. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0001-9327-6177
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2017 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 12, no 1, e0170274Article in journal (Refereed) Published
Abstract [en]

Background: Cervical range of motion (ROM) is commonly assessed in clinical practice and research. In a previous study we decomposed active cervical sagittal ROM into contributions from lower and upper levels of the cervical spine and found level- and direction-specific impairments in women with chronic non-specific neck pain. The present study aimed to validate these results and investigate if the specific impairments can be explained by the neutral posture (defining zero flexion/extension) or a movement strategy to avoid large gravitationally induced torques on the cervical spine.

Methods: Kinematics of the head and thorax was assessed in sitting during maximal sagittal cervical flexion/extension (high torque condition) and maximal protraction (low torque condition) in 120 women with chronic non-specific neck pain and 40 controls. We derived the lower and upper cervical angles, and the head centre of mass (HCM), from a 3-segment kinematic model. Neutral head posture was assessed using a standardized procedure.

Findings: Previous findings of level- and direction-specific impairments in neck pain were confirmed. Neutral head posture was equal between groups and did not explain the direction-specific impairments. The relative magnitude of group difference in HCM migration did not differ between high and low torques conditions, lending no support for our hypothesis that impairments in sagittal ROM are due to torque avoidance behaviour.

Interpretation: The direction- and level-specific impairments in cervical sagittal ROM can be generalised to the population of women with non-specific neck pain. Further research is necessary to clarify if torque avoidance behaviour can explain the impairments.

Place, publisher, year, edition, pages
2017. Vol. 12, no 1, e0170274
Keyword [en]
Neck Pain, Cervical Range of Motion, Kinematics, Musculoskeletal pain
National Category
Physiotherapy
Identifiers
URN: urn:nbn:se:hig:diva-23215DOI: 10.1371/journal.pone.0170274ISI: 000392380100068PubMedID: 28099504ScopusID: 2-s2.0-85009874286OAI: oai:DiVA.org:hig-23215DiVA: diva2:1062295
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1403AFA Insurance, 090288
Note

Additional funding from Centre for Environmental Research in Umeå, Award Number 1152383 and University of Gävle.

Available from: 2017-01-05 Created: 2017-01-05 Last updated: 2017-03-22Bibliographically approved

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Rudolfsson, ThomasBjörklund, MartinSvedmark, ÅsaSrinivasan, DivyaDjupsjöbacka, Mats
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CiteExportLink to record
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