Intergroup variability of age dynamics of sexual dimorphism of body dimensions in infancy in connection with ethnic factor

Introduction. Monthly dynamics of sexual dimorphism, SD, main anthropometric dimensions in pairs groups different ethnicity, residing several capitals former USSR Republics, is under discussion. Materials and methods. 6 ethnic (1965-1981 years research) are analyzed — Kalmyk Russian Elista, Turkman Ashkhabad, Moldavian Kishinev, Latvian Riga, Tatar Kazan, rural Chuvash Cheboksary. region Data borrowed from textbooks on physical development, published by Science research institute child adolescents hygiene health protection, collected treated according to common standard requests. The quantitative estimation the value dimorphism based Kullback divergence. Results. Relative stability patterns weight height their SD contrast with significant increase through first three trimesters. acceleration boys compared girls fixed for Ashkhabad samples without connection ethnicity. characterized more intensive indices transversal body all. have trimester, fourth trimester; infants or less stable height, but higher levels – third trimesters year. Cheboksary as both skeletal growth Russians show decrease towards end year, keep high weight. In Riga rates further advantage only weight; leave behind trimester trimester. Conclusion. Analysis «aboriginal - population» revealed that factor has a influence forming intergroup variability processes infancy. Different one same anthropoecological niche each somatic dimension ethno-specific peculiarities age dimensions.