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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: The spinal curvature of three different sitting positions analysed in an open MRI scanner
Authors: Baumgartner, Daniel
Zemp, Roland
List, Renate
Stoop, Mirjam
Naxera, Jaroslav
Elsig, Jean Pierre
Lorenzetti, Silvio
DOI: 10.21256/zhaw-4913
Published in: The Scientific World Journal
Volume(Issue): 2012
Issue: 184016
Issue Date: 2013
Publisher / Ed. Institution: Hindawi
ISSN: 2356-6140
Language: English
Subject (DDC): 610: Medicine and health
Abstract: Sitting is the most frequently performed posture of everyday life. Biomechanical interactions with office chairs have therefore a long-term effect on our musculoskeletal system and ultimately on our health and wellbeing. This paper highlights the kinematic effect of office chairs on the spinal column and its single segments. Novel chair concepts with multiple degrees of freedom provide enhanced spinal mobility. The angular changes of the spinal column in the sagittal plane in three different sitting positions (forward inclined, reclined, and upright) for six healthy subjects (aged 23 to 45 years) were determined using an open magnetic resonance imaging (MRI) scanner. An MRI-compatible and commercially available office chair was adapted for use in the scanner. The midpoint coordinates of the vertebral bodies, the wedge angles of the intervertebral discs, and the lumbar lordotic angle were analysed. The mean lordotic angles were (mean ± standard deviation) in a forward inclined position, in an upright position, and in a reclined position. All segments from T10-T11 to L5-S1 were involved in movement during positional changes, whereas the range of motion in the lower lumbar segments was increased in comparison to the upper segments.
Fulltext version: Published version
License (according to publishing contract): CC BY 3.0: Attribution 3.0 Unported
Departement: School of Engineering
Organisational Unit: Institute of Mechanical Systems (IMES)
Appears in collections:Publikationen School of Engineering

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