[THE DIFFERENCES OF CHANGES IN BODY WEIGHT ON THE HYPERTENSION IN ADOLESCENTS 12-13 YEARS].

The aim of the research was to study the differences of overweight, obesity to the level of AH among 12-13 years old. We carried out a cross-sectional study of 1493 adolescents aged 12-13 years in Semey. The risk factor of diseases of the circulatory system was studied, such as obesity and its correlation with the level of arterial pressure. The population with normal blood pressure (BP) was 87.4% (n=1305), persons with arterial hypertension (AH) (1 and 2 degrees) 12.6% (n=188). There were no statistically significant differences in prevalence of AH by ethnicity (Pearson's χ² criterion = 0.18, df=1, p=0.671). By weight, body mass index (BMI), systolic blood pressure (SBP), diastolic blood pressure (DBP), statistically significant differences were detected (p <0.001). According to the data of the study, the following data were revealed in the structure of individuals with normal BP according to the value of BMI: underweight in 29.5% (n=385), normal weight in 65.1% (n = 850), overweight in 4.7% (n=61), obesity in 0.7% (n=9). In the structure of persons with arterial hypertension, the BMI value was: underweight 12.3% (n=23), normal weight 66.7% (n=126), overweight 19.4% (n=36), obesity 1.6% (n=3). A significant prevalence of hypertension in the population of adolescents aged 12-13 years was found, roughly to 12.6%. In the groups of adolescents with normal BP and AH, statistically significant differences in the ratio of the body weight categories of adolescents determined by BMI were revealed, to a greater extent this was related to overweight.