[Maximal oxygen consumption and various physiological and somatic characteristics of students of the Białystok Medical Academy 1976-1977 and 1980-1986].

In students (men) of the 2nd course maximum oxygen uptake and some physiological features (rest systolic rate, vital lung capacity, the strength of flexors of both hands) and somatic ones (body weight, height) specific to a marked degree of physical fitness were assessed. The authors tried to find whether there exists a correlation between actual motion activity, cigarette smoking and self assessment of the health state by the students. The results of studies are presented in 16 tables and compared with the literature data.

The surgeon's mental load during decision making at various stages of operations.

In surgeons while opening the wound, during the operation proper, closing the skin and immediately after the operation, the ECG was recorded telemetrically for 5-min periods. From the ECG recordings, indices reflecting cardiac arrhythmia and emotional level were calculated. It is concluded that the process of decision making during the vital stages of operations causes a fall in the CHRV (the coefficient of heart rate variability), S2 (the variance of R-R intervals) and VR (the variability range of R-R intervals).