title: [Age-related changes in human body proportions studied by the method of principal components].
abstract: The method for analysis of the ontogenetic changes of size and shape based on the decomposition of Kullback divergence into parts corresponding to the principal components, found for intragroup variability of signs is suggested. The application of this method is illustrated by the analysis of age changes of body proportions for boys 3-17 years old. Before the pubertal period the stable tendency to a relative lengthening of extremities which changes to a contrast one at age of 12-14 has been pointed out. The definitive differences of proportions to a considerable extent is determined by variability of biological age at the group of children.
mesh_terms: D000293:Adolescent; D000375:Aging; D000886:Anthropometry / Q000379:methods*; D001824:Body Constitution; D002648:Child; D002675:Child, Preschool; D006128:Growth; D006801:Humans; D008297:Male; D013223:Statistics as Topic
vernacular_title: O vozrastnykh izmeneniiakh proportsiĭ tela cheloveka, izuchennykh s pomoshch'iu metoda glavnykh komponent.