Biomedical subjects

S G Krivoshchekov

Publications and source records attributed to S G Krivoshchekov.

At least 19 recordsLinked to original sources

PubMed1998

[Systemic reactions and the central mechanisms of respiratory regulation in adaptation to cold and hypoxia].

Respiratory and circulatory changes in response to various physiological stimuli (hypoxia, cold, etc.) were studied. The respiratory center was found to play the leading role in the developing a response. Upon repeated exposures to cold and hypoxia, the central regulatory mechanisms include nonspecific compensatory mechanisms by changing the sensitivity of the respiratory center and its thresholds. Various regulatory strategies were found at different stages of adaptive processes. There was a correlation between the changes in the respiratory center and thermoregulatory shifts. The respiratory center was demonstrated to play a system-forming role. It is suggested that determination of the sensitivity of the respiratory center may serve for prognostic and diagnostic purposes.

Adaptation, Physiological↗

PubMed1994

[Psychophysiologic predisposing factors of health disturbances in workers of various shifts in Northern expeditions].

It has been shown that the mental status of the body determines the direction of psychophysiological and somatic adaptation of the workers of industrial North expeditions. This should be taken into account while predicting the risk and development of diseases and their prevention.

Adaptation, Physiological↗

PubMed1992

[The characteristics of the energy support for muscular activity in different somatotypes].

62 healthy untrained males of different somatotypes were given a 30-minute bicycle ergometry [correction of veloergometric] load at the threshold of aerobic exchange. Subjects with a higher percentage of muscular tissue and decreased percentage of fat had their ventilation threshold at a minimal distance from the point of anaerobic transition as compared with the subjects with a more developed fat component. The latters revealed a more active utilisation of lipids whereas the subjects with developed muscles used the carbohydrates rather as the energy substrate.

Adult↗

PubMed1990

[Ventilatory response to hypercapnic stimulation in subjects of various somatic conditions].

Hypercapnic sensitivity was tested by rebreathing method in 30 healthy untrained non-obese men. The S coefficient (ventilatory sensitivity) dependence on the fat accumulation (kg and %) and on the muscle mass (%) was found during the factor, regression and correlation analyses. The dependence seems to be associated with the metabolism and energy supply of muscular activity in subjects of different bodily constitution.

Adipose Tissue↗

PubMed1989

[Individual typological characteristics of the cardiovascular reaction to partial body cooling in workers on field-watch assignments].

Due to the use of a cluster analysis 5 types of the individual cardiovascular response to hand local cooling and of cold thermosensitivity were identified. The following groups were determined: I. non-cold-adapted group with elevated cold thermosensitivity and vascular response to local cooling, young age and short-term length of service on watch; 2. the group with different levels of thermal adaptation on the verge of the 3-year period of work, the age being similar; 3. the group with extremely low cold thermosensitivity and moderate vascular response to local cold. The group is characterized by long-term length of service and positive forecast as to individual work under subextreme conditions of being on dispatch watch.

Acclimatization↗

PubMed1989