Abstract: the physical development of children is one of the essential indicators of the state of health, which reflects the general standard of living of various population groups and is an indicator of sensitivity to environmental changes.
The aim of the work is to study the age-sex characteristics of physical development and the rate of maturation in children with undifferentiated connective tissue dysplasia living in the northern region.
Material and methods. To achieve the goal of the study, 208 students of schools in the city of Khanty-Mansiysk from 7 to 17 years old were examined with a determination of the temp of physical development ( somatotype) and phenotypic signs of connective tissue dysplasia.
Results. An analysis of the data showed that in children with undifferentiated dysplasia of the connective tissue, the rates of physical development are distributed as follows. The period of middle childhood: boys – 1.96% (microsomy); 72.55% (mesosomy); 25.49% (macrosomia); girls – 0% (microsomy); 71.43% (mesosomy); 28.57% (macrosomia). Adolescence: boys – 4% (microsomy); 84% (mesosomy); 12% (macrosomia); girls – 40% (microsomy); 60% (mesosomy); 0% (macrosomia). In the 2 period of childhood, no inter-gender differences were observed, in adolescents a slowdown in the rate of maturation is in girls. In healthy children in the period of middle childhood: boys – 10% (microsomy); 60% (mesosomy); 30% (macrosomia); girls – 12.50% (microsomy); 56.25% (mesosomy); 31.25% (macrosomia). Adolescence: boys – 0% (microsomy); 100% (mesosomy); 0% (macrosomia); girls – 42.86% (microsomy); 57.14% (mesosomy); 0% (macrosomia). The ratio of somatotypes in age and gender groups is similar to those for undifferentiated connective tissue dysplasia.
Conclusions. Despite the more frequent occurrence of undifferentiated dysplasia of connective tissue in high latitudes, its presence does not affect gender and age differences in the rates of physical development of 7 to 17 years old children living in the northern region.
Keywords: undifferentiated dysplasia of connective tissue, rates of physical development, children, north