RESEARCH ARTICLE


Ergonomic Comparison of a Sit-Stand Workstation With a Traditional Workstation in Visual Display Unit Work



Nina Nevala1, 2, *, Dong-Shik Choi1, 3
1 Finnish Institute of Occupational Health, Ergonomics and Usability, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland
2 University of Jyväskylä, Gerontology Research Centre and Department of Health Sciences, Box 35, FI-40014 University of Jyväskylä, Finland
3 Korea Occupational Safety and Health Agency, Pohang, 790-823, South-Korea


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Nevala et al.; Licensee Bentham Open

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Finnish Institute of Occupational Health, Ergonomics and Usability, Topeliuksenkatu 41 a A, FI-00250 Helsinki, Finland; Tel: +358 40 7344166; E-mail: nina.nevala@ttl.fi


Abstract

Purpose:

To compare ergonomics of an electrically adjustable sit-stand workstation with a traditional workstation in video display unit (VDU) work.

Methods:

Twelve female workers (aged 27-53 years) participated in this experimental study. Electromyography, wrist postures, subjective assessments, and productivity were used to make the ergonomic comparison.

Results:

The muscle activity of the right trapezius (p=0.01) and left wrist extensors (p=0.02), extension of the right (p=0.05) and left (p=0.002) wrist, and perceived strain of the arms (p=0.05) were lower and productivity was better (p=0.02) when the workers used a low-sitting, high-sitting, or standing posture at the sit-stand workstation than when using a low-sitting posture at the traditional workstation. In the whole, the subjects were more satisfied (p=0.05) with the sit-stand workstation than with the traditional workstation.

Conclusions:

Working both in sitting and standing postures was more productive and caused lower strain of the workers’ upper limbs than work only in a sitting posture. The electrically adjustable sit-stand workstation offers the possibility to reduce the sedentary behavior and inactivity in VDU work.

Keywords: Ergonomics, sedentary work, sit-stand workstation, standing, visual display unit.