SCALING SEGMENTAL MOMENTS OF INERTIA FOR INDIVIDUAL SUBJECTS
SCALING SEGMENTAL MOMENTS OF INERTIA FOR INDIVIDUAL SUBJECTS
复制标题
DOI：
10.1016/0021-9290(85)90050-8
复制
发表时间：
1985-01-01
影响因子：
2.4
通讯作者：
WILSON, BD
中科院分区：
文献类型：
--
作者：
FORWOOD, MR;NEAL, RJ;WILSON, BD
本研究的目的是验证人体各节段转动惯量的横向主轴测量方法。首先，使用两种方法来衡量Chandler等人的S(小册子DOT HS-801430和AMRL TR-74-137，俄亥俄州莱特帕特森空军基地，1975年)的平均对象数据以估计分段转动惯量。Chandler等人使用体重和节段长度(公式1)或身体质量和站立高度(公式2)对S的数据进行了缩放。然后将这些数据与使用人体测量数据最接近受试者身体的程序进行比较。标准数据(钱德勒和S的受试者数据)和比例值之间的差异被绘制在散点图上，在D.F.的置信限为p<；0.05。对于程序1，使用公式(2)(质量和站立高度)在置信度范围内绘制了43%的标定值，而使用公式(1)(质量和管段长度)绘制的比例为26%。公式(1)明显低估了最高和最重的受试者。在程序2中，分别使用公式(1)和(2)的比例值中只有16%和21%落入置信度范围内。结果表明，标度公式近似于车身各段的转动惯量，精度有限。然而，如果采用比例尺，那么来自适当数据集的平均转动惯量数据，使用合并了受试者质量和站立高度的公式，给出的结果最接近标准值。
The purpose of this investigation was to validate methods of scaling human segmental moments of inertia for the transverse principal axis. Firstly, two methods of scaling Chandler et al.''s (Pamphlets DOT HS-801 430 and AMRL TR-74-137, Wright Patterson Air Force Base, OH, 1975) mean subject data to estimate the segmental moments of inertia were used. Chandler et al.''s data were scaled using body mass and segment length (formula 1) or body mass and standing height (formula 2). These data were then compared with a procedure of using the cadaver whose anthropometric measurements most closely match those of the subject. The difference between the criterion data (Chandler''s subject data) and scaled values were plotted on scatter diagrams with confidence limits of p < 0.05 at d.f. = 17. For procedure 1, 43% of the scaled values were plotted within the confidence limits using formula (2) (mass and standing height), compared with 26% for formula (1) (mass and segment length). Formula (1) markedly underestimated the tallest and heaviest subjects. In procedure 2, only 16% and 21% of the scaled values, using formula (1) and (2), respectively, fell within the confidence limits. Results suggested that scaling formulae approximate the moment of inertia of body segments with only limited accuracy. However, if scaling was to be adopted then mean moment of inertia data from an appropriate data set, using the formula that incorporates subject mass and standing height, gave results closest to the criterion value.