Effects of age-related changes in step length and step width on the required coefficient of friction during straight walking
Effects of age-related changes in step length and step width on the required coefficient of friction during straight walking
复制标题
与年龄相关的步长和步宽变化对直行所需摩擦系数的影响
DOI：
10.1016/j.gaitpost.2019.02.005
复制
发表时间：
2019
期刊：
影响因子：
2.4
通讯作者：
Masani Kei
中科院分区：
文献类型：
--
作者：
Yamaguchi Takeshi;Masani Kei
背景滑倒是老年人福尔斯跌倒的主要原因之一。老年人被认为是一个小的前后（AP）组件和一个大的内外侧（ML）组件所需的摩擦系数（RCOF），由于短步长和宽步宽，分别步行。然而，有限的信息是available.Research QuestionWhat是老化的影响所得的RCOF（RCOFres）和ML（RCOFML）和AP（RCOFAP）组件在直线行走？方法我们使用了来自公开数据库（国立先进工业科学技术研究所步态数据库2015）的188名年龄在20-77岁的参与者的动力学和运动学数据。参与者被分为以下三组：年轻组（n = 56;年龄范围，20-34岁），中年组（n = 50;年龄范围，35-64岁），老年组（n = 82;年龄范围，65-77岁）。但老年组的RCOFML高于其他组，且步长大于其他组。老年组较高的RCOFM和较低的RCOFAP可能与更侧向的滑动有关。建议在横向方向上具有高防滑性的鞋，以防止老年人危险的横向滑动。
BackgroundSlipping is one of the leading causes of falls among older adults. Older adults are considered to walk with a small anteroposterior (AP) component and a large mediolateral (ML) component of the required coefficient of friction (RCOF) owing to a short step length and a wide step width, respectively. However, limited information is available.Research questionWhat are the effects of aging on the resultant RCOF (RCOFres) and its ML (RCOFML) and AP (RCOFAP) components during straight walking?MethodsWe used the kinetic and kinematic data of 188 participants aged 20–77 years from a publicly available database (National Institute of Advanced Industrial Science and Technology Gait Database 2015). The participants were divided into the following three groups: young group (n = 56; age range, 20–34 years), middle-aged group (n = 50; age range, 35–64 years), and old group (n = 82; age range, 65–77 years).ResultsThe RCOFresand RCOFAPwere lower in the old group than in the other groups, indicating a lower slip risk in this group. However, the RCOFMLwas higher and the step width was greater in the old group than in the other groups. The higher RCOFMLand lower RCOFAPin the old group might be associated with slips in a more lateral direction.SignificanceOur findings suggest that older adults have a high risk of slipping in a more lateral direction. Shoes with high-slip resistance in the lateral direction are recommended to prevent hazardous lateral slips among older adults.