Required coefficient of friction during level walking is predictive of slipping
Required coefficient of friction during level walking is predictive of slipping
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DOI：
10.1016/j.gaitpost.2016.06.003
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发表时间：
2016-07-01
期刊：
影响因子：
2.4
通讯作者：
Redfern, Mark S.
中科院分区：
文献类型：
--
作者：
Beschorner, Kurt E.;Albert, Devon L.;Redfern, Mark S.
文献中经常报告所需摩擦系数（RCOF）作为滑动倾向的指标。本研究的目的是进一步发展滑动预测模型的基础上RCOF检查滑适度湿滑条件下的RCOF约等于可用的摩擦系数。基线RCOF被发现正常行走试验，然后一个意想不到的滑动被引入与中度湿滑靴地板污染物组合的31名受试者。Slip结局（即，受试者是否经历了滑倒）基于放置在脚跟上的标记的位移来评估。使用逻辑回归分析来模拟RCOF对滑动的影响。结果表明，研究人员发现，以较大RCOF行走的受试者滑倒的可能性更高。预测的RCOF滑动概率范围为3%至95%，RCOF增加0.01与滑动优势比1.7相关。因此，RCOF的适度差异可能对滑动倾向产生巨大影响。这项研究表明，RCOF可以是一个敏感和有效的预测在现实的摩擦环境中的滑动。(C)2016爱思唯尔B.V.保留所有权利。
The required coefficient of friction (RCOF) is frequently reported in the literature as an indicator of slip propensity. This study aimed to further develop slip prediction models based on RCOF by examining slips under moderately slippery conditions where the RCOF was approximately equal to the available coefficient of friction. Baseline RCOFs were found for normal walking trials and then an unexpected slip was introduced with a moderately slippery boot-floor contaminant combination for thirty-one subjects. Slip outcomes (i.e., whether a subject experienced a slip) were assessed based on the displacement of a marker placed on the heel. A logistic regression analysis was used to model the impact of RCOF on slipping. Results showed that subjects who walked with a greater RCOF were found to have a higher probability of slipping. The predicted probability of a slip across the RCOF ranged from 3% to 95% and an increase of 0.01 in RCOF was associated with a slipping odds ratio of 1.7. Thus, modest differences in RCOF can have a dramatic impact on slip propensity. This study shows that RCOF can be a sensitive and valid predictor of slipping in realistic frictional environments. (C) 2016 Elsevier B.V. All rights reserved.