Laboratory of Rehabilitation and Sports Psychophysiology

In chronic fatigue, there is an imbalance in vegetative regulation: CFS is associated with a decrease in HRV in patients who have survived cancer (Fagundes et al., 2011; Vigo et al., 2015; LaVoy et al., 2016), as well as in the population of conditionally healthy people (Tak et al., 2009). Adults with CFS also have impaired sensorimotor functions: a slowdown in reaction time and movement time when performing tasks (Van Den Eede et al., 2011), as well as a slowdown in psychomotor functions according to the results of the tapping test and a deterioration in some cognitive functions (Neu et al., 2011). Thus, the characteristics of children living with a cancer-stricken brother/sister, as a result of which they are exposed to chronic stress, have not been studied. The presence or severity of chronic fatigue in such children has not been studied. There is also little research on the relationship of subjective feelings of fatigue in children with objective autonomic and sensorimotor functions. Objective: to study the features of HRV indicators and sensorimotor functions in school-age children (from 7 to 17 years old) with varying degrees of chronic fatigue in both conditionally healthy and those who have suffered a serious disease (brain tumor), as well as siblings of cancer-affected children. The relevance of this study is determined by the growing interest of the world community in the problem of chronic fatigue, the need to improve the quality of life and performance of students, which decrease with chronic fatigue, as well as the lack of development of objective physiological manifestations of this condition.