Abstract
From one length and three circumferences of the trunk, the second formula of the trunk was originated, of which the quantitative measurements were:
1) Trunk-length : the vertical distance to the suprasternale from the symphysion.
2) Trunk-circumference I: the circumference of shoulders,
3) Trunk-circumference II: the horizontal circumference passing the substernale, namely, lower circumference of the chest,
4) Trunk-circumference III: the pelvic circumference.
From the above four quantitative measurements, the following six indices; namely,
I) Trunk length-circumference index I (LUI) : = Trunk-length. 100/trunk-circumference I,
II) Trunk length-circumference index II (LUII) : = Trunk-length. 100/trunk-circumference II,
III) Trunk length-circumference index III (LUIII) : Trunk-length. 100/trunk-circumference III,
IV) Trunk circumference index A (UA) : = Trunk-circumference I. 100/trunk-circumference II,
V) Trunk circumference index B (UB) : = Trunk-circumference I. 100/trunk-circumference III,
VI) Trunk circumference index C (UC) : = Trunk-circumference II. 100/trunk-circumference III.
These indices were sought from the anthropological ages of many cases of men and women, and centered around arithmetical averages of indices; five or six types of classifications were made with considerations for standard variations.
These types were symbolized simply from one to five or six which in turn were charted in parallel arrangements in order of indices LUI LUII LUIII UA UB UC, producing a form which was named the Second Formula of the Trunk.
