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AGE RELATED CHANGES IN PHYSICAL DE VELOPMENT AND BODY MASS COMPONENTS OF MONGOLIAN YOUNG ATHLETES

L. GUNDEGMAA (1,3), E. Z. GODINA (2,3), B.-E. SHAGDAR (1,4) 1 -INSTITUTE OF PHYSICAL CULTURE OF MONGOLIA, ULAANBAATAR, MONGOLIA 2 -LOMONOSOV MOSCOW STATE UNIVERSITY, MOSCOW, RUSSIA 3 -RUSSIAN STATE UNIVERSITY OF PHYSICAL CULTURE, SPORT, YOUTH AND TOURISM, MOSCOW, RUSSIA 4 -MEDICAL STATE UNIVERSITY OF MONGOLIA, ULAANBAATAR, MONGOLIA

Objective: the purpose of the study is to investigate age changes in characteristics of physical development and body composition in young Mongolian athletes. Materials and methods: the results of an anthropological study of Mongolian males aged 9–18 years are discussed. 796 healthy boys, aged from 9 to 18 years were investigated, enrolled in secondary schools in the city of Ulaanbaatar (460 sports school students and 336 individuals from municipal schools). The data collected in 2010–2014. The program included a survey of more than 40 measurement, calculation of some parameters, descriptive signs. Only some of the body parameters are presented in this article. Body mass components were assessed with the bioimpedance analyzer ABC-01 «Medass» (Russia). This method is based on the biophysical measurement of the electrical resistance of tissues resulting in the estimation fatfree, fat, active cell and skeletal muscle mass, and the total amount of extracellular fluid. Main statistical parameters were calculated, one-way ANOVA was performed. For a comparative analysis all studies subjects were divided not only into age groups («younger» youths – 9–12 years, «teenagers» – 13–15 years and «older» youths 16-18 years), but also into groups according to sports specializations (games, single combat, cyclic, individual and the control group).
Results: boys of the younger age group (9–12 years) involved in cyclic sports show higher results of total body parameters and body composition compared to the other groups studied. In the teenagers’ group (13–15 years) boys engaged in sports games have higher indicators of physical development and body composition when compared to those of boys from other groups. At older ages (16 - 18 years old) high values of physical parameters have boys engaged in sports games and individual sports, while youths specializing in combat and individual sports differ by higher values of body components.
Conclusions: different types of sports specializations have significant influence on the parameters of physical development and body composition in Mongolian boys.
Keywords: 
sports anthropology; anthropometry; body composition; bioimpedance analysis; young athletes.