Long-Term Dynamics of Changes of Anthropometrical Indices of School Students

Abstract

Introduction. The relevant direction of studying the physical development of children and adolescents is the study of the dynamics of changes anthropometric indices from generation to generation. Systematic monitoring of regular indices in different regions is necessary. Material and methods. A one-step study of anthropometric indices of 2990 healthy boys of East Kazakhstan aged from 6 to 17 years was carried out in 2016. Children were clustered into age groups and ethnicity according to the principles of anthropology. The research of anthropometric indices was performed according to generally accepted methods in the morning. The chest circumference was measured during the pause period. The values of anthropometric indices of schoolchildren in 2016 were compared with the values of similar indices of children in 1986. Microsoft Office Excel 2007 was used to statistically process the data. Results. In modern boys of the Kazakh nationality there is a harmonization of growth and weight indices. The maximum weight gain and chest circumference increase occurs at the same time as the “growth jump,” while 1986 schoolchildren had an average annual body weight gain one year late after the start of the rapid growth period. In Russian boys born in 1986 the maximum weight gain is established at 14 years, and in modern children - at the age of 13 years. Conclusions. A comparative analysis of the multi-year dynamics of children’s anthropometric indices revealed acceleration trends reliably confirmed by the higher values of these indices in modern boys compared to their 1986 peers.There have been established national characteristics in the physical development of boys.

Long-term dynamics of the physical development of children in Russia

“…В ряде исследований, опубликованных в последние десятилетия, показано увеличение тотальных размеров тела (длина тела, масса тела, окружность грудной клетки) и ускорение полового созревания у детского населения, представляющего различные этнические группы, проживающего в различных климатогеографических условиях, сельской местности и городах миллионниках, например, Москве, Санкт-Петербурге [8][9][10][11][12][13][14].…”