title: Seat pan and backrest pressure distribution while sitting in office chairs.
abstract: Nowadays, an increasing amount of time is spent seated, especially in office environments, where sitting comfort and support are increasingly important due to the prevalence of musculoskeletal disorders. The aim of this study was to develop a methodology for chair-specific sensor mat calibration, to evaluate the interconnections between specific pressure parameters and to establish those that are most meaningful and significant in order to differentiate pressure distribution measures between office chairs. The shape of the exponential calibration function was highly influenced by the material properties and geometry of the office chairs, and therefore a chair-specific calibration proved to be essential. High correlations were observed between the eight analysed pressure parameters, whereby the pressure parameters could be reduced to a set of four and three parameters for the seat pan and the backrest respectively. In order to find significant differences between office chairs, gradient parameters should be analysed for the seat pan, whereas for the backrest almost all parameters are suitable.
authors.affiliation: Institute for Biomechanics, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland. Electronic address: zempr@ethz.ch.
authors.forename: Roland
authors.initials: R
authors.lastname: Zemp
authors.affiliation: Institute for Biomechanics, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland.
authors.forename: William R
authors.initials: WR
authors.lastname: Taylor
authors.affiliation: Institute for Biomechanics, ETH Zürich, Vladimir-Prelog-Weg 3, 8093 Zürich, Switzerland.
authors.forename: Silvio
authors.initials: S
authors.lastname: Lorenzetti
mesh_terms: D000328:Adult; D001415:Back; D002081:Buttocks; D002138:Calibration; D004867:Equipment Design; D006804:Ergonomics; D005260:Female; D006801:Humans; D007374:Interior Design and Furnishings; D008297:Male; D055641:Mathematical Concepts; D011187:Posture; D011312:Pressure; D014160:Transducers, Pressure; D055815:Young Adult
keywords: Chair-specific calibration; Pressure distribution; Sitting behaviour