[Methodological approaches to quantitative evaluation of the influence of pilot overload on functional durability and occupational health of pilots (basic concepts)].

The article presents various concepts underlying the quantitative methods that assess influence of piloting overload on pilots. The authors also consider principal differences between acute and chronic overload of + Gz direction, its adaptational and cumulative effects. The most important items are based on phasic nature of physiologic response to single and repeated overload of + Gz direction, on a law describing summation of delta-effects caused by various conditions of pilot's occupational activities, considering the risk of disorders determining potential unreliability of pilots in maneuver flight and probability of cumulative effects. The theoretical items are illustrated by some practical examples.