Moscow University
Anthropology
Bulletin
Anthropology
Bulletin
Lomonosov Moscow State University, Anuchin Institute and Museum of Anthropology, Mochovaya st., 11, Moscow, 125009, Russia
Permiakova Ekaterina Yurievna, PhD; ORCID: 0000-0002-6490-4004; ekaterinapermyakova@gmail.com.
This study is the second stage of the work devoted to the development of percentile body mass index (BMI) standards for Moscow children and adolescents, comparing the data obtained with the WHO standards, as well as assessing the frequency of individuals with borderline values and their distribution in the examined group. Materials and methods. The analysis included 925 Moscow boys 7–17 years old, examined by standard anthropometric methods. In accordance with the objectives of the study, similar to the previous stage, the analysis used the descriptive characteristics of BMI, converted using the LMS transformation method of the variational series on the basis of the WHO tables and presented in the form of z-values of the indicator. Statistical processing of the results was carried out using the standard statistical software packages Statistica 10.0 and Minitab 17.3. Results. A shift in the median BMI values is shown: median z-score values reach significantly higher values compared to the reference values at the age of 10 and 12 years, as well as at 8 and 9 years. Analysis of percentile BMI standards allowed us to record a positive shift in the lower boundaries of the variation of the trait against the background of the control group; for low and medium values of the indicator, these differences are smoothed out by 16 years (with the exception of variants with increased BMI). By the magnitude of the indicator corresponding to obesity, Moscow boys come to the fore only after reaching the age of 13. The differences themselves at this distribution boundary are more pronounced. The incidence of individuals with a severe thinness and obesity slightly increases with age, with overweight and thinness – it remains unchanged. Conclusion. Thus, the range of BMI variability in Moscow boys is gradually shifting toward higher values of the indicator, which confirms the assessment of both its absolute values corresponding to the percentiles used in the WHO classification and z-scores. The percentiles obtained in this study and their graphical display indicate a shift in the upper bound of the distribution characterizing obesity variants, the opposite of how it was recorded for girls. The totality of these facts allows us to conclude that the boys are more pronounced changes occurring in the physical development of Moscow schoolchildren.
Moscow boys; WHO data; z-scores; obesity
DOI: 10.32521/2074-8132.2020.1.039-046
Цит.: Permiakova E.Yu. Body mass index percentile standards of Moscow children and adolescents based on WHO data. Part II // Moscow University Anthropology Bulletin (Vestnik Moskovskogo Universiteta. Seria XXIII. Antropologia), 2020; 1/2020; с. 39-46
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