Elsevier

Applied Ergonomics

Volume 30, Issue 6, 1 December 1999, Pages 477-486
Applied Ergonomics

Validity of self-reported duration of work postures obtained by interview

https://doi.org/10.1016/S0003-6870(99)00018-6Get rights and content

Abstract

The aim of the study was to validate interview data concerning the duration of four work postures (1) sitting, (2) standing/walking with hands above shoulder level, (3) standing/walking with hands between shoulder and knuckle level, and (4) standing/walking with hands below knuckle level. The self-reported time spent in each posture was tested in relation to observations and technical measurements in 20 subjects during two full working days. The linear relationships between self-reports and observations were strong for the three postures; sitting (r2=0.55), hands above shoulder level (r2=0.58) and hands below knuckle level (r2=0.69). Thus, using this interview technique, self-reports concerning time spent in (1) sitting, (2) standing/walking with hands above shoulder level and, (3) standing/walking with hands below knuckle level may be accurate enough for studying these work postures in epidemiological studies.

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