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Currently, obesity is considered as a risk factor for many comorbid conditions. Computed tomography (CT) is considered the «gold standard» for analyzing the composition of the human body, in particular adipose tissue, but this method carries radiation exposure. The most accessible alternative non-invasive method is bioimbisometry (BIM), but the accuracy of its indicators in clinical practice today is questioned. Target. To carry out a comparative analysis of the indicators of visceral and parietal fat obtained by methods of non-invasive and minimally invasive diagnostics to identify the most informative, safe, cost-effective screening markers. Materials and methods. After basic anthropometric studies and angiography (AH) of the arteries of the head and neck in patients with clinical manifestations of vascular disorders of varying severity, an analysis of the body composition (BSC) of those examined using the Tanita analyzer scales was carried out. Results. It was found that the body mass index (BMI) changed depending on the absence or presence of arterial stenosis on CT data. According to CT, depending on the degree of progression of stenosis by plaques, a positive correlation was found between the growth of epicardial adipose tissue (EFT) and perivascular adipose tissue (PAT); between BMI, obtained by anthropometry and RVT, obtained by CT; between the percentage of visceral fat obtained by the BIM method and EFT obtained by the CT method. The study obtained a negative correlation between the degree of hydration of the body and EFT. The BMI obtained by the anthropometry method and the BIM method when compared by the Mann-Whitney test did not differ statistically significantly, which indicates the possibility of express BMI assessment by the BIM method, taking into account the measurement error. Conclusions. The volume of EFT and RVT, measured on CT, can act as an independent marker in assessing the severity of atherosclerotic lesions. In the course of the study, it was proved that the CST indices obtained by the BIM method did not contradict the CT data, and increased depending on the progression of arterial stenosis.

The research involved 479 schoolchildren living on the territory of the Khanty-Mansi Autonomous Okrug – Yugra (KMAO – Yugra). Two groups were singled out: the Khanty and 1st and 2nd generation descendants of newcomers. The following parameters were studied: blood pressure, heart rate, double product, and index of functional changes; the frequency of deviations from standard values was identified. In addition, the dominant type of circulation was determined. The analysis of the children’s circulatory system parameters revealed some ethnicity-related features. It was established that Khanty children have higher aerobic capacity of the cardiovascular system and lower blood pressure than newcomers’ descendants. Blood pressure deviations from the norm (high blood pressure in girls and arterial hypertension in boys) were statistically more common in newcomers’ descendants. Virtually one in two children had heart rate exceeding the normal values. Moreover, we observed increased stress of the cardiovascular system in the group of newcomers’ descendants (in girls aged 12–15 and boys aged 14–17 years) which was indicated by higher values of double product and index of functional changes. Hyperkinetic type of circulation was predominant in both groups, being, however, more frequent in Khanty children. The revealed features of the cardiovascular system in children of different ethnic groups living in KMAO – Yugra highlight the importance of developing regional and ethnic standards for an objective evaluation of children’s health. For citation: Govorukhina A.A., Kon’kova K.S. Features of the Circulatory System in 8–17-Year-Old Children of Different Ethnic Groups Living in the Khanty-Mansi Autonomous Okrug – Yugra. Journal of Medical and Biological Research, 2021, vol. 9, no. 2, pp. 126–137. DOI: 10.37482/2687-1491-Z050

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The article presents the results of assessing the functional status of female students participating in the implementation of the standards of the GTO complex (Ready for Labor and Defense complex). Morphofunctional indices, hemodynamic features and parameters of the vascular bed were analyzed. Differences in the adaptability of students participating in the implementation of the standards of GTO complex have been established.