Up to now several researchers use values of basic inertial quantities of human body parts obtained for old cadavers. Taking into account the trunk researchers presented this body part often as one segment only and rarely as few-segment part. The purpose of this study was obtaining values of basic inertial quantities of body parts including five parts of the trunk for young, fit living males. Thirty young, fit males (age: 24±4 years, height: 179±6 m, body mass: 74±7 kg) were directly measured (circumferences and skin-fat folds) and photographed in order to use these data for Clauser et. al. (parts of extremities) and Erdmann’s (parts of trunk) methods for estimation of mass and location of centres of mass of body parts. These methods take into account personal data for estimating inertial quantities. Relative mass (according to the mass of the whole body) of trunk parts (sum of thorax + abdomen + pelvis but without shoulder girdle) of subjects investigated in this work was similar to that obtained by Dempster for old cadavers. Relative mass differed for shoulders and for lower extremities. Old subjects for both lower extremities had around 31-32 % of the whole body mass and young subjects had almost 37 %. Procedure for obtaining location of the whole body centre of mass for graphical method (summation of mas) was presented. Obtained data are very important for analyses of arched trunk, e.g. in high jumping, pole vault jumping, rhythmic gymnastics of young, fit athletes and also for models of young passengers in car-crash tests, for ergonomics and medical analyses and other purposes.

到目前为止，已有几位研究人员使用从旧尸体获得的人体基本惯性量值。考虑到躯干研究人员经常将这一身体部位仅分为一个部分，而很少将其分为几个部分。这项研究的目的是获得身体健康的年轻男性身体各部分的基本惯性值，包括躯干的五个部分。直接测量了30位健康的男性（年龄：24±4岁，身高：179±6 m，体重：74±7 kg）（周长和皮肤脂肪褶皱）并拍照，以便将这些数据用于Clauser等人。等 （四肢部分）和Erdmann（躯干部分）方法估计身体部位的质量和质心位置。这些方法考虑了用于估计惯性量的个人数据。在这项工作中研究的对象的躯干部分的相对质量（根据整个身体的质量）（胸部+腹部+骨盆的总和，但没有肩带）与Dempster对于旧尸体获得的质量相似。肩膀和下肢的相对质量有所不同。两个下肢的老年受试者约占整个体重的31-32％，年轻受试者约占37％。介绍了通过图形方法（mass求和）获得全身重心位置的过程。获得的数据对于拱形后备箱的分析非常重要，例如在跳高，撑竿跳高，适合身体健壮的年轻运动员的艺术体操中，以及对于在车祸测试中的年轻乘客模型，人体工程学和医学分析等。