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

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

Available under License Creative Commons Attribution Non-commercial No Derivatives.

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