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1、2351-9789 © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of AHFE Co

2、nference doi: 10.1016/j.promfg.2015.07.898 Procedia Manufacturing 3 ( 2015 ) 5889 – 5896 Available online at www.sciencedirect.com ScienceDirect6th International Conference on Applied Human Factors and Ergonomics

3、(AHFE 2015) and the Affiliated Conferences, AHFE 2015 The impact of work clothing design on workers’ comfort Sara Bragançaa,*, Liliana Fontesb, Pedro Arezesa, Elazer R. Edelmanc, Miguel Carvalhob a Department of Pr

4、oduction and Systems, University of Minho, Guimarães, Portugal b Department of Textile Engineering, University of Minho, Guimarães, Portugal c Institute for Medical Engineering and Science, Massachusetts Inst

5、itute of Technology, Cambridge, USA Abstract Physical and physiological comfort, at work and during leisure time, is important to human health and motivation. A growing number of jobs require workers to sit. Most clothe

6、s, except those intended for wheelchair users, were designed for walking or the standing position. Clothing designs should be user-oriented and meet users’ needs. Garment design should conform to body position and post

7、ure, not just shape and size. In this paper we present the ergometric impact of a new type of trousers designed to adapt to changes in position. Concentrations of compression forces, temperature and pressure were docume

8、nted in an exploratory pilot study and contrasted to traditional designs. The new trousers showed significant decreases in compression force concentration, especially in and around the knees and waist. Most participant

9、s identified comfort as an important factor when purchasing a pair of trousers and that, for working purposes, they would prefer these special trousers rather than traditional designs. © 2015 The Authors. Publishe

10、d by Elsevier B.V. Peer-review under responsibility of AHFE Conference. Keywords: Sitting position; Clothing design; Comfort; Compression; Pressure. 1. Introduction People are increasingly sedentary, especially at work,

11、 where they may spend 8 to 9h with minimal mobility [1]. Most working adults spend 1/2 to 2/3 of their time at work in a sitting position [2], and in some jobs, such as the case of call centers, the time spent on sedent

12、ary behavior can reach 90% [3]. * Corresponding author. Tel.: +351 964 228 094. E-mail address: saraabraganca@gmail.com © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY

13、-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer-review under responsibility of AHFE Conference5891Sara Bragança et al. / Procedia Manufacturing 3 ( 2015 ) 5889 – 5896 to allow for l

14、ong periods of use while seating down, keeping in mind the ergonomics of this position, which differs largely from the ergonomics of a human body standing. These revolutionary jeans have the following principle charact

15、eristics: ? Reduction of pressure points on contact surfaces; ? Possibility of waistband growth in accordance with the demand of changing waist dimensions with changes in posture. This allows a reduction in pressure fo

16、rces in the region where the trousers grip the waist; ? Possibility of opening an invisible zipper in the sacral area when the user sits, allowing for the growth of the crotch length (with inner tissue). This allows a

17、reduction of the compression forces by repositioning the trouser waistband, providing higher levels of comfort; ? Removal of excess tissue accumulated on the back of the knee when the user assumes the sitting position.

18、 This paper presents a pilot exploratory study of workers’ perception of regular jeans, designed for the standing position, and FYT jeans specially designed for dynamic and sitting positions. 2. Methods 2.1. Data collec

19、tion Six subjects participated in this pilot test. Since an important aspect of this study was the perceived comfort reported by the users in the sitting position, the selected participants were limited to people that w

20、ork in the seated position and that usually wear trousers similar to those tested in this study. In this test, variables related to compression, temperature and pressure were analyzed, using appropriate sensors (Figur

21、e 1). Compression was measured with six Plux© compression sensors (Figure 1a). These sensors were physically connected to a device, which then transmitted recorded data via Bluetooth to a tablet. The same device

22、supported one temperature sensor (NTC thermistor) that was attached to the back of the participant’s right knee (Figure 1b). Pressure was measured using a Tekscan’s ConformatTM #5330 (Figure 1c) and Research software.

23、This mat is composed by 1024 piezoresistive organized in a 32x32 square array. The compression sensors and the temperature sensor were placed with adhesive tape on several body locations, (Figure 2). The mat was placed

24、 on a typical office chair where participants sat and worked as usual, thus enabling the recording of the contact pressure between the seat and the participant. a) Compression sensor b) Temperature sensor c) Pressure

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