The Study of Sitting Workstation for Pregnant Women

• Main Authors: Ho Lee Ling, 何禮玲
• Other Authors: Lee Yung Hui
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/61357863629623686246

碩士 === 國立臺灣科技大學 === 工程技術研究所 === 83 === The postural differences between pregnant and non-pregnant subjects were studied and the effects of various sitting work- station design were assessed.Five pregnancy and five non- pregnancy subjects participated in this study.The experimental variables were the table-chair-vertical-distance (35cm and 30cm) and the seat- inclination-angles (0°,+10 and ,+20°). The seated working postures of the last 10 min. of a 50 min. sitting tasks of each subject were video recorded using a 2D motion analysis system and the sitting postures were examined. The center of gravity (COG) of the subject were registered by a ground reaction forces system. Subjective rating of body part dis- comfortable level was recorded at the end of each session. Experimental data indicated that: (1) Subjects'' trunk were maintain more straight either in a larger table-chair-vertical- distance or in a larger seat-inclination-angle. There was more lumbar lordosis when subjects were seated in a seat with a larger seat-inclination angle. (2) There was a larger anteflexion of the upper-arm and a larger trunk-thigh angle of the pregnant sub- jects than that of the non-pregnant. (3) An increase of the seat- inclination-angle would move the COG forward. There was a more left-ward COG of the pregnant group than that of the non-pregnant . (4) Rating data indicated that most of subjects considered it was uncomfortable to perform a sitting task with a seat- inclination-angle of 20°. It was recommended in this study that (1) The 10°seat- inclination- angle is recommendable for the pregnant women while performing a sitting task. (2) The table-chair-vertical-distance should range from 30 cm to 35 cm. (3) An arm-rest and back- support must be considered in the design of a seated workstation for pregnant women. (4) The rollers-added chair could be feasible to increase mobility but an attention should be paid to the maintaing of stability.