DiDomenico Angela, McGorry Raymond W, Chang Chien-Chi
Liberty Mutual Research Institute for Safety, Hopkinton, MA, USA.
Appl Ergon. 2007 Sep;38(5):533-9. doi: 10.1016/j.apergo.2006.09.001. Epub 2006 Nov 13.
Falls precipitated by slipping are listed among the leading causes of occupational injuries. Several factors may influence the risk of slips and falls, including perception of surface conditions. The current research examined the relationship between perceptions of slipperiness and slip distance at heel strike. The investigation compared objective and subjective measures for 31 participants ranging in age from 19 to 67 years old. Subjective slipperiness ratings for several floor surface and walking velocity conditions were obtained. Small slips were not generally perceived, but a uniform slip distance threshold could not be identified due to the large variability in ratings. The Pearson correlation coefficient between slip distance and subjective ratings for slides (30-100mm) was r=-0.17. Results indicate that subjective ratings should be used cautiously as a measure of slipperiness, partially due to possible underestimation of slipperiness and the variability in perceptions.
因滑倒导致的跌倒被列为职业伤害的主要原因之一。有几个因素可能会影响滑倒和跌倒的风险，包括对地面状况的感知。当前的研究考察了足跟触地时对滑度的感知与滑倒距离之间的关系。该调查比较了31名年龄在19岁至67岁之间的参与者的客观和主观测量结果。获得了几种地面状况和步行速度条件下的主观滑度评级。小的滑倒通常未被察觉，但由于评级差异很大，无法确定统一的滑倒距离阈值。滑倒距离与滑动（30 - 100毫米）主观评级之间的皮尔逊相关系数为r = -0.17。结果表明，主观评级作为滑度的一种测量方法应谨慎使用，部分原因是可能低估了滑度以及感知的变异性。
