BIOELECTRICAL PHASE ANGLE IN YOUNG PEOPLE WITH OVERWEIGHT

Purpose: to determine the diagnostic value of the phase angle (PA) in young people with overweight and normal body weight based on its correlation with body composition indicators. Materials and methods. Bioimpedance analysis data and correlation analysis were used. Results. It was found that in the examined individuals with excess body weight, PA was significantly lower than in the control group. In women, this difference was 0.66о (p<0.05), and in men - 0.74о (p<0.05). In terms of body fat index (BF), women in the main group significantly differed from the control group (+7.2 %, p<0.05), while in men no significant differences were found. Similar ratios were observed in the groups of women and men regarding the percentage of skeletal muscles (SM). In women in the main group it was 4.9 % (p<0.05) lower than in the control group, and in men it did not differ statistically. The largest difference in body composition indicators was observed in relation to the sarcopenic index (SI), which was significantly lower in the main group in both women and men, respectively, by 0.98 kg/m2 (p<0.01) and 0.83 kg/m2 (p<0.01). No significant difference was observed in body hydration as measured by total body water (TBW, %) in both girls and boys when comparing the main and control groups. As for the assessment of the relationship between PA and body composition indicators, a strong positive correlation was observed only between PA and SI. The correlation coefficients in women and men were r=0.53 (p=0.002) and r=0.61 (p=0.001) respectively. Conclusions. The strong positive correlation between PA and sarcopenic index indicates the potential informativeness of РА for assessing the state of skeletal muscles in order to prevent the development of sarcopenia or its correction in young people.