EVALUATION OF LOWER LIMB HEALTHY CONDITION UNDER VIRTUAL REALITY CIRCUMSTANCES FOR OLD AGES

随着世界医学和医疗技术的进步，老年人口急剧增加。在我们的生活工程技术，以恢复福利和人机工程学已迫切需要沿着下降的出生率。在此背景下，本研究以健康人日常生活中的下肢状况为研究对象，以随著年龄增长而出现的行走功能沿着衰退为基础，进行下肢状况的提取。为了研究健康人步行方式的运动特征，对稳定步行状态下的三维测量数据分别进行正面和侧面方向的分析。重点研究了人体腰部、膝部、踝部的频率传递特性。另一方面，通过分析得到了健康步行条件下的动态步态模型，并利用该模型对真实的步行模式与模型进行了仿真比较。即对实验数据和仿真数据的频率传递特性进行比较。健康人稳定状态下的步态模式在频率传递特性上表现出一定的相位延迟，通过分析和实验得到了一些有意义的数据。

The population of old people has been dramatically increasing with the progress of medicine and medical treatment in the world. In our life the engineering technique to restore to the welfare and ergonomics has been urgently required along with declining birth rates. Not only for the care to the disabled person, but also the care for an old person who is not physically handicapped, has been becoming very important subject to enjoy them selves.Under these background into consideration, this research focuses on the extraction of lower limb condition for healthy people in the daily life based on the depression of walking function along with being older. In order to investigate the motion characteristic of walking style for a healthy people, the data obtained by three dimensional measurement under stable walking condition were analyzed in the direction of frontal and lateral, respectively. The frequency transfer characteristics for the waist, knee, ankle were mainly investigated. On the other hand, the dynamical gait model under healthy walking conditions was mathematically obtained through analysis and was used to simulate for comparison between real and model walking patterns. That is the frequency transfer characteristics of experimental data and the simulated data were compared. The gait pattern in the stable condition for healthy people showed a certain phase delay in the frequency transfer characteristics.Several significant data were obtained through both analysis and experiments.