Buchholz B, Armstrong T J
Department of Work Environment, University of Lowell, MA 01854.
Hum Factors. 1991 Aug;33(4):429-41. doi: 10.1177/001872089103300405.
The goal of this study was to collect anthropometric data that describe the geometry of the surface of the hand and to model this anthropometry as a function of gross external hand measurements. The depth and breadth of each segment of the hand were measured at points that were spaced at approximately equal distances between the joints of the hand. Linear models using hand breadth as the independent variable explained from 12% to 47% of the variation in segment breadths and from 6% to 74% in segment depths. Ellipsoids are used in biomechanical models as an efficient mathematical description of the shape of kinematic segments for use in the determination of contact with other objects. Therefore the primary objectives of this study were to approximate the semiaxis dimensions for these hand segment contact bodies using a linear model of the gross anthropometry and to evaluate the accuracy with which ellipsoids describe the geometry of the hand segments. Graphical comparisons showed that differences between the ellipsoidal approximations and the breadth and depth measurements were largest near the joints. Data collected in this study could be used to create a set of overlapping ellipsoids that would provide a more accurate representation of hand geometry, and this representation could be adapted to biomechanical models that use ellipsoids to define segment geometry.
本研究的目的是收集描述手部表面几何形状的人体测量数据，并将这种人体测量学建模为手部外部总体测量的函数。在手的关节之间以大致相等的距离间隔的点处测量手的每个节段的深度和宽度。以手宽作为自变量的线性模型解释了节段宽度变化的12%至47%以及节段深度变化的6%至74%。在生物力学模型中，椭球体被用作运动节段形状的有效数学描述，用于确定与其他物体的接触。因此，本研究的主要目标是使用总体人体测量学的线性模型来近似这些手部节段接触体的半轴尺寸，并评估椭球体描述手部节段几何形状的准确性。图形比较表明，椭球体近似值与宽度和深度测量值之间的差异在关节附近最大。本研究中收集的数据可用于创建一组重叠的椭球体，这些椭球体将提供更准确的手部几何形状表示，并且这种表示可适用于使用椭球体定义节段几何形状的生物力学模型。
