Hewson David J, Singh Neeraj K, Snoussi Hichem, Duchene Jacques
University of Technology of Troyes (UTT), France.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:3678-81. doi: 10.1109/IEMBS.2010.5627649.
Falls are a leading cause of death in the elderly. One of the most common methods of predicting falls is to evaluate balance using force plate measurement of the Centre of Pressure (COP) displacement. This signal, known as a stabilogram, can be decomposed into movement in anteroposterior (AP) and mediolateral (ML) directions. It has been suggested that studying the velocity of COP displacement could lead to new insights into fall risk. The aim of this study was to attempt to classify elderly fallers and non-fallers, as well as control subjects based on COP velocity measurements. Three groups of 10 subjects (controls, elderly fallers, and elderly non-fallers) were compared. Discriminant function analysis was able to correctly classify 90% of the subjects based only on COP velocity measurements. Further work is needed to determine whether this parameter might be of use in longitudinal measurement of fall risk in home-dwelling elderly.
跌倒是老年人死亡的主要原因之一。预测跌倒最常用的方法之一是通过压力板测量压力中心（COP）位移来评估平衡。这个信号，即所谓的稳定图，可以分解为前后（AP）和内外侧（ML）方向的运动。有人提出，研究COP位移的速度可能会为跌倒风险带来新的见解。本研究的目的是尝试根据COP速度测量结果对老年跌倒者、非跌倒者以及对照受试者进行分类。对三组各10名受试者（对照组、老年跌倒者和老年非跌倒者）进行了比较。判别函数分析仅根据COP速度测量就能正确分类90%的受试者。需要进一步开展工作来确定该参数是否可用于居家老年人跌倒风险的纵向测量。
