China Institute of Sport Science, Beijing 100061, China.
Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China.
Fa Yi Xue Za Zhi. 2022 Dec 25;38(6):702-708. doi: 10.12116/j.issn.1004-5619.2021.411008.
To investigate the relationship between the perpetrator's sex, victim's position and slashing location as well as anthropometric parameters on distance and space required for slashing, to provide the theoretical basis for the judgment of whether the crime scene was consistent with the criminal activity space.
The kinematics data of 12 male and 12 female subjects slashing the neck of standing and supine mannequins as well as the chest of the standing mannequins with a kitchen knife were obtained by using a 3D motion capture system. The relationship between the perpetrator's sex-victim's position, the perpetrator's sex-slashing location, and anthropometric parameters and the distance and space required for the slashing were analyzed by two-factor repeated measures ANOVA and Pearson correlation analysis respectively.
Compared with slashing the neck of supine mannequins, the distance () and normalized () of slashing the neck of standing mannequins were greater, while vertical distance () and normalized () of the knife side were smaller. Compared with slashing the neck of standing mannequins, the and slashing the chest of standing mannequins were greater, while and were smaller. Horizontal distance () and normalized () of the knife side in males were greater than that in females. Height and arm length were positively correlated with , , and when striking the standing mannequins.
When slashing the neck of supine or standing victims, the slashing distance is shorter and the slashing height is greater. Furthermore, the distance and space required for slashing are correlate with anthropometric parameters.
探讨施害者性别、受害者体位和切割位置与切割所需距离和空间的人体测量学参数之间的关系，为判断犯罪现场是否与犯罪活动空间一致提供理论依据。
采用三维运动捕捉系统获取 12 名男性和 12 名女性受试者对仰卧和站立人体模型颈部以及站立人体模型胸部进行切割的运动学数据。采用双因素重复测量方差分析和 Pearson 相关分析分别分析施害者性别-受害者体位、施害者性别-切割位置与人体测量学参数与切割所需距离和空间的关系。
与切割仰卧人体模型颈部相比，切割站立人体模型颈部的距离（）和归一化（）更大，而刀侧的垂直距离（）和归一化（）更小。与切割站立人体模型颈部相比，切割站立人体模型胸部的 和 更大，而 和 更小。男性切割刀侧的水平距离（）和归一化（）大于女性。身高和臂长与切割站立人体模型时的、、呈正相关。
在切割仰卧或站立受害者的颈部时，切割距离更短，切割高度更大。此外，切割所需的距离和空间与人体测量学参数相关。
