基于不同数据分析方法评价老年人穿不同鞋时的行走稳定性

发布时间：2019-04-19 14:14

【摘要】：研究目的:本研究基于三类不同原理的量化方法,评价老年女性在裸足、穿拖鞋、穿普通运动鞋、穿老年健步鞋时的行走稳定性。研究方法:受试者为60-75岁女性,分别穿三种鞋及裸足在跑步机上行走,每次行走8分钟。采用红外高速运动捕捉系统采集行走时的运动学数据。基于步态参数的变异性评价(标准差、变异系数、绝对中位差)、最大李雅普诺夫指数以及Hurst指数几种不同方法评价行走稳定性。研究结果:变异性指标分析方法中,老年人的几种不同状态间的指标均无统计学意义;最大李雅普诺夫指数的计算结果显示,据不同指标计算的不同足部穿着状态下的指数间的差异均具有统计学意义,其中裸足计算所得指数显著高于穿运动鞋及老年健步鞋的指数;通过ki宽计算出的Hurst指数结果显示,穿老年健步鞋行走时,行走数据的长程相关性显著高于其他三种状态。研究结论:1.变异性测量未能区分出老年人穿不同鞋时行走稳定性的差异2.最大Lyapunov指数的研究结果表明,裸足行走时老年人的稳定性低于穿鞋行走,而穿其他鞋之间差异不大3.依据ki宽计算得到的Hurst指数的统计结果说明老年健步鞋使得行走具有更强的长程相关性,这说明老年健步鞋更有助于老年人保持行走稳态。
[Abstract]:Objective: the purpose of this study was to evaluate the walking stability of elderly women in bare feet, slippers, general sports shoes and walking shoes based on the quantitative methods of three kinds of different principles. Methods: 60-75-year-old women were walking on treadmill with three kinds of shoes and bare feet for 8 minutes each time. The infrared high speed motion capture system is used to collect the kinematic data during walking. The walking stability was evaluated by the variability evaluation of gait parameters (standard deviation, coefficient of variation, absolute median deviation), maximum Lyapunov exponent and Hurst index. Results: in the analysis method of variability index, there was no statistical significance among the indexes of several different states of the elderly. The calculated results of the maximum Lyapunov index show that the difference between the indices of different foot wearing states calculated by different indicators is statistically significant. The index calculated by bare foot was significantly higher than that of sports shoes and walking shoes for the elderly. The results of Hurst index calculated by ki width showed that the long-range correlation of walking data was significantly higher than that of the other three states when walking with walking shoes for the elderly. Research conclusions: 1. Variability measurement failed to distinguish the difference of walking stability between the elderly when wearing different shoes. The results of the study of the maximum Lyapunov index showed that the stability of the elderly during barefoot walking was lower than that of wearing shoes, while the difference between wearing other shoes was not different by 3. According to the statistical results of Hurst index calculated by ki width, it is shown that the elderly walking shoes have stronger long-range correlation, which indicates that the elderly walking shoes are more helpful for the elderly to keep the walking steady state.
【学位授予单位】：北京体育大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：G804.6

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