|Title:||A Comparison of Sitting Posture Adaptations of Pregnant and Non-Pregnant Females||Authors:||LEE, YUNG-HUI
|Keywords:||pregnant women;seated workstation;sitting posture||Issue Date:||1999||Journal Volume:||v.23||Journal Issue:||n.5-6||Start page/Pages:||391-396||Source:||INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS||Abstract:||
The postural differences between seated pregnant and non- pregnant subjects were studied, and the effects of various sitting workstation designs were assessed. Five pregnant and five non-pregnant subjects participated in this study. The experimental variables were the table- chair-vertical- distance (35 cm and 30 cm) and the seat-inclination-angle (0 degrees, + 10 degrees and + 20 degrees). The seated working postures of the last 10 min of a 50-min sitting session were videotaped and analyzed using a 2D motion analysis system. Postural differences were observed between the pregnant and non-pregnant groups which may be attributed to the changes and/or mechanisms associated with pregnancy. The increased size of the abdomen requires more room in front of the body; in the pregnant subjects this was obtained by holding the upper-arm further from the body, inclining the upper trunk more anterior, and extending the hip more. A seat with a sloping angle of 10 degrees was found to reduce the biomechanical loading on the lower back and in subjective ratings from both groups, was preferred over the other seat angles.
|Appears in Collections:||醫學系|
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