Haibach Pamela S, Slobounov Semyon M, Newell Karl M
Department of Kinesiology, The Pennsylvania State University, USA.
Gait Posture. 2008 Feb;27(2):303-8. doi: 10.1016/j.gaitpost.2007.04.004. Epub 2007 May 23.
The purpose of this study was to investigate whether the moving room paradigm could be used to assess fall risk in older people. A group of young adults (18-29 years) and two groups of elderly adults (60-79 years) with and without a history of falls were placed into a simulated moving room. Participants stood still facing an oscillating three dimensional virtual room moving in the antero-posterior plane with three types of room movement conditions, continuous oscillatory, discrete anterior and discrete posterior. The young adults performed with less postural motion and coherence with the virtual motion than the older age groups. The group of elderly fallers exhibited more postural motion [center of pressure (COP) length, p<0.05], a trend towards higher coherence with the object motion (p=0.07), and the greatest amount of time-to-stability (p<0.05). A virtual moving room incorporating measures of time-to-stability and egomotion appears useful in predicting risk for falls.
本研究的目的是调查移动房间范式是否可用于评估老年人的跌倒风险。一组年轻人（18 - 29岁）以及两组有和没有跌倒史的老年人（60 - 79岁）被置于一个模拟的移动房间中。参与者静止站立，面对一个在前后平面内振荡的三维虚拟房间，该房间有三种类型的房间运动条件，即连续振荡、离散向前和离散向后。与老年组相比，年轻人在姿势运动和与虚拟运动的连贯性方面表现较差。有跌倒史的老年组表现出更多的姿势运动[压力中心（COP）长度，p<0.05]，与物体运动的连贯性有升高趋势（p = 0.07），以及最长的达到稳定所需时间（p<0.05）。一个结合了达到稳定所需时间和自我运动测量的虚拟移动房间似乎有助于预测跌倒风险。
