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

随着世界医学和医疗的进步，老年人口急剧增加。在我们的生活中，随着出生率的下降，迫切需要工程技术来恢复福利和人体工程学。在这样的背景下，针对老年人日常生活中行走功能低下的问题，本研究主要针对老年人行走功能低下的情况，对老年人日常生活中的肢体状况进行提取。为了研究健康人步行方式的运动特征，对稳定步行条件下的三维测量数据分别在正面和侧面进行了分析。重点研究了腰部、膝部、踝部的频率传递特性。另一方面，通过分析得到健康步行条件下的动态步态模型，并对其进行仿真，将真实步行模式与模型步行模式进行比较。对实验数据和模拟数据的频率传递特性进行了比较。健康人在稳定状态下的步态在频率传递特性上表现出一定的相位延迟，通过分析和实验获得了几个有意义的数据。

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.