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A study of the kinematics of ingress and egress of upright and recumbent seats

Issue title: IEA 2012: 18th World congress on Ergonomics - Designing a sustainable future

Article type: Research Article

Authors: Moore, Christopher | Nimbarte, Ashish | Rajulu, Sudhakar | Aghazadeh, Fereydoun

Affiliations: Industrial and Management Systems Engineering, West Virginia University, PO Box 6070, Morgantown, WV, USA | Anthropometry and Biomechanics Facility, Johnson Space Center, NASA, 2101 NASA Rd 1, Houston, TX, USA | Department of Construction Management & Industrial Engineering, Louisiana State University, 3132 - B Patrick F. Taylor Hall, Baton Rouge, LA, USA

Keywords: ingress, egress, recumbent seat, 3D kinematics, planer reach

DOI: 10.3233/WOR-2012-0317-1316

Journal: Work, vol. 41, no. Supplement 1, pp. 1316-1322, 2012

Published: 2012
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Abstract

Research has been done on the maximum reach and ingress/egress of upright seats. However, research on recumbent seats and comparisons between recumbent and upright seats is limited. By using an eight-camera Vicon motion capture system and C-motion Visual 3D modeling software, this research compared the ingress/egress joint kinematics and maximal planar reach of an upright seat with a recumbent seat. Mean range of motion and mean peak angle for each ingress/egress task were determined and the values for the upright seat were compared to the values for the recumbent seat. For each reach task, three extreme points were extracted and compared between the upright and recumbent seat. Seat orientation was found to have a statistically significant effect on the range of motion of several joints during the ingress/egress tasks, as well as one of the extreme points during the reaching tasks.

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