BABEL, UMR 8045, CNRS, UP, 2 Voie Mazas, 75012, Paris, France.
UMR 7206 Ecoanthropology, MNHN, CNRS, UP, Musée de l'Homme, 17 place du Trocadéro, 75016, Paris, France.
Sci Rep. 2021 Mar 1;11(1):4817. doi: 10.1038/s41598-021-84327-1.
Patterns of human growth established for one population have rarely been tested in other populations. In a previous study, three growth curves from puberty were modelled for each sex in a longitudinal study of a Caucasian population based on stature, age at peak of growth and biological maturation. Each curve represents the canalisation of growth associated with the type of puberty. The high precision (± 3 cm) of individual adult stature predictions shows that growth kinetics are already set up at puberty and are canalised depending on biological maturity. Our aim is to assess whether this model can be extrapolated to other populations to test whether growth canalisation is a population-dependent phenomenon or if the model reflects a canalisation pattern specific to our species. The modelled curves predicted adult stature with the same high degree of precision in basketball players and the Baka pygmies. Therefore, (1) the relationship between growth kinetics and age at maturity is similar in all populations and (2) growth according to pubertal stages follows the same canalisation patterns in the populations despite the wide differences in their average adult statures. It suggests that morphological diversity in modern humans results from processes taking place in early development.
为一个人群建立的人类生长模式很少在其他人群中进行测试。在之前的一项研究中，对基于身高、生长高峰年龄和生物成熟度的白种人纵向研究中的每一种性别进行了三次青春期生长曲线建模。每条曲线代表与青春期类型相关的生长渠道化。个体成年身高预测的高精度（±3cm）表明，生长动力学在青春期已经建立，并根据生物成熟度进行渠道化。我们的目的是评估该模型是否可以推广到其他人群，以检验生长渠道化是人群依赖性现象，还是该模型反映了我们物种特有的渠道化模式。在篮球运动员和巴卡俾格米人中，模型曲线以相同的高精度预测了成年身高。因此，（1）所有人群中生长动力学与成熟年龄之间的关系相似，（2）尽管其平均成年身高差异很大，但根据青春期阶段的生长遵循相同的渠道化模式。这表明现代人类的形态多样性是由早期发育过程中发生的过程导致的。
