Functional Variability of the Indices of Ventilation and Gas Exchange in Healthy Young Men in Western Siberia

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The variability of standardized values of indices of the external respiration function (ERF) of healthy young men living in Western Siberia has been estimated. Three different states of ERF have been found: (i) normal respiration (normal ventilation efficiency at different levels); (ii) compensatory hyperventilation, during which the ventilation apparatus is strained, which indicates that there are some changes in the morphological structure of the respiratory regions of the lungs (this state can be considered a borderline between the normal state and pathology); and (iii) deep, highly effective respiration; it has no signs of the tension of the function or the apparatus of external respiration, and it can be considered a normal genotypic/phenotypic variant.

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