[Multivariate statistical analysis in stabilometry in human upright standing (the first report)--age-related factor].
[Multivariate statistical analysis in stabilometry in human upright standing (the first report)--age-related factor].
复制标题
人体直立稳定性测量的多因素统计分析（第一篇报告）——年龄相关因素[J].
DOI：
10.3950/jibiinkoka.92.899
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
K. Yagi
中科院分区：
文献类型：
--
作者：
K. Yagi
姿势学并不是一个定义明确的考试。近年来，稳定测量中的许多参数都可以通过计算机得到。为了评估每个参数并确定其正常范围，必须考虑受试者的年龄。采用多元回归分析和聚类分析对稳定性测定中发现的年龄相关因素进行了研究。本研究使用的参数如下：用于拒绝的椭圆面积和显示在X-Y记录仪上的图形面积，X轴（左右方向）和Y轴（前后方向）上的最大宽度，每个方向上的总长度和偏移之和，均方根，速度，加速度，以及X和Y方向上身体摆动的平均频率。测试了100名年龄在20岁至60岁之间的正常受试者，每10岁各有10名男性和10名女性。每个实验对象被要求以Romberg的姿势站在一个平台上60秒，双眼睁开或闭上。经多元回归分析，预测年龄的显著参数为（P < 0.05）：闭眼时Y方向的平均频率，睁眼时X方向的最大宽度，闭眼时拒绝椭圆和图形的面积，睁眼时Y方向的最大宽度，睁眼时X方向的椭圆面积和速度。通过聚类分析，将所有受试者成功分为两组。一组为年龄小于40岁的年轻组，另一组为年龄不小于40岁的老年组。而睁眼与闭眼的均方根、平均频率在两性和每10年的差异均不显著（P < 0.01）。男女之间的差异在Y方向上在年轻人中是显著的，在X方向上在老年人中是显著的。
Posturography is not a clearly defined examination. Recently a number of parameters can be obtained in stabilometry by means of computers. To evaluate each parameter and to decide its normal range, subject's age must be considered. The age-related factors found in stabilometry were studied in terms of both multiple regression analysis and cluster analysis. The parameters used in this study were as follows: the area of an ellipse for rejection and of the figure displayed on an X-Y recorder, the maximum width on both the X axis (left and right direction) and the Y axis (anterior and posterior direction), the total length and the sum of excursion in each direction, the root mean square, the velocity, the acceleration, and the averaged frequency of body sway in both X and Y directions. One hundred normal subjects, aged from the second to sixth decade, including 10 males and 10 females in each decade, were tested. Each subject was asked to stand on a platform in Romberg's position for 60 seconds with both eyes open and closed. The significant parameters to predict age, which were determined by multiple regression analysis, were as follows (P less than 0.05): the averaged frequency in the Y direction with eyes closed, the maximum width in the X direction with eyes open, the area of the ellipse for rejection and of the figure with eyes closed, the maximum width in the Y direction and the area of the ellipse and the velocity in the X direction with eyes open. All test subjects were successfully classified into two groups by cluster analysis. One was the younger group aged less than 40 years and the other was the older group not younger than 40-year-old. However, the difference between with eyes open and with eyes closed was not significant (P less than 0.01) as regards the parameters of root mean square and averaged frequency in both sexes and at every decade. The difference between both sexes was supposed to be significant in the Y direction in the younger group and in the X direction in the older one.