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Discomfort of seated persons exposed to low frequency lateral and roll oscillation: Effect of backrest height

Discomfort of seated persons exposed to low frequency lateral and roll oscillation: Effect of backrest height
Discomfort of seated persons exposed to low frequency lateral and roll oscillation: Effect of backrest height

Backrests influence the comfort of seated people. With 21 subjects sitting with three backrest heights (no backrest, short backrest, high backrest) discomfort caused by lateral, roll, and fully roll-compensated lateral oscillation was investigated at frequencies between 0.25 and 1.0 Hz. With lateral oscillation, the short backrest reduced discomfort at frequencies less than 0.63 Hz and the high backrest reduced discomfort at frequencies less than 1.0 Hz. With roll oscillation, the high backrest reduced discomfort at frequencies less than 0.63 Hz, but increased discomfort at 1.0 Hz. With fully roll-compensated lateral oscillation, the short backrest reduced discomfort at 0.4 Hz and the high backrest reduced discomfort at 0.5 and 0.63 Hz. As predicted by current standards, a backrest can increase discomfort caused by high frequencies of vibration. However, a backrest can reduce discomfort caused by low frequencies, with the benefit depending on the frequency and direction of oscillation and backrest height.

Backrest, Discomfort, Vibration
0003-6870
51-61
Beard, George F.
7319e731-3fa5-4172-bbed-335df92d7e87
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8
Beard, George F.
7319e731-3fa5-4172-bbed-335df92d7e87
Griffin, Michael J.
24112494-9774-40cb-91b7-5b4afe3c41b8

Beard, George F. and Griffin, Michael J. (2016) Discomfort of seated persons exposed to low frequency lateral and roll oscillation: Effect of backrest height. Applied Ergonomics, 54, 51-61. (doi:10.1016/j.apergo.2015.11.010).

Record type: Article

Abstract

Backrests influence the comfort of seated people. With 21 subjects sitting with three backrest heights (no backrest, short backrest, high backrest) discomfort caused by lateral, roll, and fully roll-compensated lateral oscillation was investigated at frequencies between 0.25 and 1.0 Hz. With lateral oscillation, the short backrest reduced discomfort at frequencies less than 0.63 Hz and the high backrest reduced discomfort at frequencies less than 1.0 Hz. With roll oscillation, the high backrest reduced discomfort at frequencies less than 0.63 Hz, but increased discomfort at 1.0 Hz. With fully roll-compensated lateral oscillation, the short backrest reduced discomfort at 0.4 Hz and the high backrest reduced discomfort at 0.5 and 0.63 Hz. As predicted by current standards, a backrest can increase discomfort caused by high frequencies of vibration. However, a backrest can reduce discomfort caused by low frequencies, with the benefit depending on the frequency and direction of oscillation and backrest height.

Text
14787 GFB-MJG 2016 Effect of backrest_height_on_discomfort_with_lateral_and_roll_oscillation - Accepted Manuscript
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Accepted/In Press date: 25 November 2015
e-pub ahead of print date: 17 December 2015
Published date: 1 May 2016
Keywords: Backrest, Discomfort, Vibration
Organisations: University of Southampton, Human Factors Research Unit

Identifiers

Local EPrints ID: 406283
URI: https://eprints.soton.ac.uk/id/eprint/406283
ISSN: 0003-6870
PURE UUID: 2cfb37a8-8fb7-465b-9564-99a4d9454106
ORCID for Michael J. Griffin: ORCID iD orcid.org/0000-0003-0743-9502

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Date deposited: 10 Mar 2017 10:44
Last modified: 05 Nov 2019 02:08

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Author: George F. Beard

University divisions

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