[Physical work capacity under different levels of measured stress in relation to type-A personality in intellectual workers].

The physical work capacity of 122 designers is defined in order to characterize the effect of work activity in the individual standard types /types A and B/ at physical dosage loading. The following methods are used: bicycle ergometry with determination of lung ventilation, oxygen consumption, pulse frequency, etc. by means of the Jaeger ergooxyscreen.

[Stress reaction to work today].

The characteristic of stress factors at work and their effect upon humans is of great significance in labour optimization, detection of early changes in organism, assessment of the operative MAC and MAN, standardization and categorization of labour, etc. On the base of such studies (biochemical, physiological and psychophysiological) stress and fatigue in various occupations and working regimes are characterized. The results from the studies on stress reactions at work are presented in a summarized way, making use of complex methodical approach.

[Plasma renin and erythropoietic activity following a decrease in extracellular volume].

A reduction of the extracellular volume of the peritoneal dialysis in rats induced modifications in plasma renin activity, plasma erythropoietic activity, and in renin activity in the renal cortex. A significant increase in the renin and erythropoietic activity was revealed in the experimental animals. It is assumed that renin and erythropoietin could be regarded as two links of the same broad control system, responsible for optimum tissue oxygen supply.