Some effects of lumbar support contour on driver seated posture.

Author(s)
Reed, M.P. Schneider, L.W. & Eby, B.A.H.
Year
Abstract

An appropriately contoured lumbar support is widely regarded as an essential component of a comforatble auto seat. A frequently stated objective for a lumbar support is to maintain the sitter's lumbar spine in a slightly extended, or lordotic, posture. Although sitters have been observed to sit with substantial lordosis in some short-duration testing, long-term postural interaction with a lumbar support has not been documented quantitatively in the automotive environment. A laboratory study was conducted to investigate driver posture with three seatback contours. Subjects from four anthropometric groups operated an interactive laboratory driving simulator for one-hour trials. Posture data were collected Posture data were collected by means of a sonic digitizing system. The data identify driver-selected postures over time for three lumbar support contours. An increase of 25 mm in the lumbar support prominence from a flat contour did not substantially change lumbar spine posture. (A)

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Publication

Library number
C 3792 (In: C 3790) /83 /91 / IRRD 875191
Source

In: Human factors in vehicle design : lighting, seating, and advanced electronics : papers presented at the International Congress and Exposition, Detroit, Michigan, February 27 - March 2, 1995, SP-1088, SAE technical paper No. 950141, p. 9-20, 25 ref.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.