Posture variation among office workers when using different information and communication technologies at work and away from work

Abstract

Office workers perform tasks using different information and communication technologies (ICT) involving various postures. Adequate variation in postures and muscle activity is generally believed to protect against musculoskeletal complaints, but insufficient information exists regarding the effect on postural variation of using different ICT. Thus, this study among office workers aimed to determine and compare postures and postural variation associated with using distinct types of ICT. Upper arm, head and trunk postures of 24 office workers were measured with the Physiometer® over a whole day in their natural work and away-from-work environments. Postural variation was quantified using two indices: APDF_(90-10) and EVA_(sd). Various ICT had different postural means and variation. Paper-based tasks had more non-neutral, yet also more variable postures. Electronics-based tasks had more neutral postures, with less postural variability. Tasks simultaneously using paper- and electronics-based ICT had least neutral and least variable postures. Tasks without ICT usually had the most posture variability. Interspersing tasks involving different ICT could increase overall exposure variation among office workers and may thus contribute to musculoskeletal risk reduction.

Abstract

Practitioner Summary: This study in office workers assessed posture variation, which is believed to protect against musculoskeletal complaints. Electronics-based tasks had more neutral upper body postures but less posture variation than other tasks. Combining tasks based on different technologies could increase postural variation in and outside the job for office workers.

Keywords::

• ICT
• posture
• exposure variation analysis
• APDF_(90-10)

Acknowledgements

The authors thank Paul Davey for writing the LabVIEW™ software program used in data processing, and James Lyra for assistance with observations. A National Health and Medical Research Council of Australia Public Health Scholarship and a research grant from the Western Australian Occupational Therapists' Registration Board supported this study.