[The relation of the reactivity of the human respiratory system, mental and physical work capacity and metabolic characteristics during a 1-year stay in the mountains]. / Issledovanie sviazei mezhdu reaktivnost'iu sistemy dykhaniia, umstvennoi i fizicheskoi rabotosposobnost'iu i osobennostiami metabolizma u cheloveka pri godichnom prebyvanii v gornykh usloviiakh.

People with the highest rates of mental working capacity staying for a year at an altitude of 1680 m below sea level are characterized by less pronounced responses of respiration to moderate hypoxia and great ventilatory response to maximally endured hypoxic action, by higher glucose content in blood and physical working capacity. Many relationships typical of the middle mountains are inverse ones under conditions of a one-year stay at an altitude of 3650 m below sea level. In the case of a total decrease in indices of mental and physical working capacity people with the highest rate of information processing are characterized by less reactivity of the respiratory system, greater resistance to ultimate hypoxia, lower glucose concentration, less physical working capacity.

[Human higher nervous activity during adaptation to moderate altitude]. / Vysshaia nervnaia deiatel'nost' cheloveka v usloviiakh adaptatsii k srednegor'iu.

26 practically healthy youths of 16-18 years old not adapted to the mountains earlier were investigated under the conditions of a plain (Kiev) and at the height of 2100 m and 3000 m above sea-level (Chegem). A stay under the conditions of moderate altitude for one month was found to favour amelioration of the characteristics of the functional lability (CFL) of the nervous system, information processing velocity, attention concentration and distribution, short-term memory volume, general subjective feeling as well as shortening the latent periods of visually-motor reactions. Large adaptive shifts of the CFL and more stable positive effect of mountain adaptation after returning to the plain were found in persons with initially high functional lability level in comparison to those with mean or lower values of CFL. Positive connection between the CFL and the degree of adaptive changes of external respiration was observed under the conditions of moderate altitude. Statistically significant connection of the CFL with the respiratory center sensitivity to hypercapnia was found rather than their correlation with the value of ventilatory response to acute hypoxia during gas mixtures respiration.