CHARACTERISTICS OF INTER-SYSTEM INTERACTIONS BETWEEN MORPHOTYPE AND NEURODYNAMIC OF STUDENTS WITH DIFFERENT BMI LEVELS

Purpose. To study morphotype and neurodynamic peculiarities and their intersystem relationship in students with different BMI levels living in Khanty-Mansi Autonomous Okrug – Yugra. Materials and methods. The research covered 174 first-year students of Surgut State Pedagogical University: 33 male and 141 female students. The study was conducted on a voluntary basis, with written informed consent to be examined. Anthropometric indices, body composition (Tanita BC-601), neurodynamic parameters (“NS-PsychoTest”) were evaluated. Statistical analysis was performed using the application package Statistica 7.0 (StatSoft, USA). Results. Students with different BMI levels did not differ significantly in body length. The differences in mean body weight of the examined students (with low and high BMI values) were due to the combined increase of fat mass (49.6%) and muscle mass (34.3%) in the males and the predominant increase of fat mass (96.7%) in the females, as well as to a decrease of body water content (by 23.4% in the females and 12.1% in the males). The neurodynamic characteristics of the students surveyed reflect statistically greater velocity-strength performance in young males, with less reliability in the executive systems of neurodynamic reactions. The obtained results indicate a strong correlation between morphotype and neurodynamic indices in students with low BMI (R=0,77; χ2=78,527, p=0,016), and a moderate strength relationship in the groups with medium and high BMI (R=0,64; χ2=84,688, p=0,036 and R=0,61; χ2=78,040, p=0,028 respectively). Conclusion. Values of the morphological indices of the examined students reflect the prevalence of meso- and macrosomatotypes. There is a prevalence of anthropometric indices and higher velocity and force indices of neurodynamic in males in comparison with females. In the complex of morphological and neurodynamic processes, the studied students act as a heterogeneous group, the heterogeneity of which is due not only to age-sex-specific morphotype and neurodynamic, but also to their joint interdependence.