Kimura K
Kimura Auxological Institute, Sayama, Japan.
Kaibogaku Zasshi. 1996 Feb;71(1):39-46.
Viewed as a function of chronological age and skeletal maturity (K method), this paper examined growth of the second metacarpal in the hybrids between American men and Japanese women. Radiographs of their right hand and wrist were taken from 1958 to 1965 longitudinally. The semi-longitudinal samples comprised those of 458 American Black- and 653 American White-Japanese hybrids and 429 Japanese, 3-19 years old. According to age, the hybrids followed roughly a similar pattern of growth in the bone length to their paternal Americans. Their values were usually placed in an almost intermediate position between those of their parental groups. The bone showed few differences in width between the hybrids and their parental groups, but the relationship between them was complicated. In the width/length index, the hybrids followed roughly a similar course of age changes rather to the Japanese at the early ages, but after puberty, they were placed in an intermediate position between their parental groups. According to skeletal maturity, the bone length and width revealed a significant linear regression in each group. Significant differences were found for the regression of the length to skeletal maturity between the hybrids and Japanese. The bone length increased more rapidly in the hybrids than in the Japanese as it matures. Thus, the genetic control could become dominant gradually in the bone length at least from the start, as skeletal maturity progresses.
将其视为实足年龄和骨骼成熟度（K 法）的函数，本文研究了美国男性与日本女性杂交后代第二掌骨的生长情况。从1958年到1965年对他们的右手和手腕进行了纵向X线摄影。半纵向样本包括458名美国黑人与653名美国白人 - 日本杂交后代以及429名3至19岁日本人的样本。按年龄来看，杂交后代在骨长度上的生长模式大致与其美国父系相似。他们的值通常处于其亲本群体之间的几乎中间位置。杂交后代与其亲本群体在骨宽度上差异不大，但它们之间的关系很复杂。在宽/长指数方面，杂交后代在早期大致遵循与日本人相似的年龄变化过程，但在青春期后，他们处于其亲本群体之间的中间位置。根据骨骼成熟度，每组的骨长度和宽度都显示出显著的线性回归。在杂交后代和日本人之间，骨长度对骨骼成熟度的回归存在显著差异。随着骨骼成熟，杂交后代的骨长度比日本人增加得更快。因此，至少从一开始，随着骨骼成熟度的进展，遗传控制在骨长度方面可能会逐渐占据主导地位。
