ADAPTIVE CAPABILITIES OF CHILDREN OF DIFFERENT AGE GROUPS IN DISTANCE LEARNING UNDER MARTIAL LAW CONDITIONS

The study focuses on the adaptive capabilities of children in different age groups in the context of distance learning, which is particularly relevant in the era of globalization, digitalization, and the continuous modernization of educational technologies. In Ukraine, distance learning has become a necessary measure and a tool for ensuring the educational process during military conflicts. The primary drawback of the distance learning format is physical inactivity, which has become a common way of life for students. The consequences of physical inactivity primarily affect the state of the cardiovascular system, with its indicators reflect the reserves of the body’s adaptive capabilities. In the course of the study, the definition of adaptive potential and Robinson’s index were used as criteria for the adaptive capabilities of the cardiovascular system.A comparison of the adaptive potential of younger school-age children (middle childhood) and middle school-age children (adolescents) revealed a trend of decreasing adaptive capacity of the cardiovascular system with age. Among students aged 7–8 years old, 88% of boys and 90% of girls have a degree of adaptation, while in adolescents this figure decreases to 70% in boys and 80% in girls. Research has shown that most children, regardless of age group, have an average level of cardiovascular endurance according to the Robinson Index (in the range of 81-90), but its adaptation reserve is limited.An analysis of gender differences in adaptation revealed that girls in both age groups have higher cardiovascular endurance according to the Robinson Index compared to boys. Specifically, medium and high endurance levels were more frequently observed among girls, while a significant proportion of boys showed below-average endurance, particularly in high school (up to 40%). The results indicate that under distance learning conditions, the cardiovascular system in girls operates with sufficient functional (adaptive) reserves of the body, while in boys, optimal adaptive capacity is maintained through higher-than-normal levels of strain, leading to increased expenditure of the body’s functional reserves.