Indices of electrocardiogram dispersion mapping during five-day exposure to dry immersion

Иванов, Г. Г.; Baevsky, R. M.; Bersenev, E. Yu.; Rusanov, V. V.; Larina, I. M.; Пастушкова, Л. Х.

doi:10.1134/s0362119714070056

Cited by 3 publications

(2 citation statements)

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“…Studies of cardiovascular system changes in DI have revealed the subsequent involvement of electrical (increase of amplitude of QRS complex) and then – energy metabolic (decrease of heart rate and water-electrolyte balance alterations) processes changes in the myocardium; the most prominent changes were registered on the 5th day of DI (Ivanov et al, 2011). Autonomic regulation also appears to shift in the direction of the sympathetic component (Iwase et al, 2000; Eshmanova et al, 2008, 2009; Kabulova and Eshmanova, 2008).…”

Section: Effects On the Cardiorespiratory Systemmentioning

confidence: 99%

Dry Immersion as a Ground-Based Model of Microgravity Physiological Effects

et al. 2019

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Dry immersion (DI) is one of the most widely used ground models of microgravity. DI accurately and rapidly reproduces most of physiological effects of short-term space flights. The model simulates such factors of space flight as lack of support, mechanical and axial unloading as well as physical inactivity. The current manuscript gathers the results of physiological studies performed from the time of the model’s development. This review describes the changes induced by DI of different duration (from few hours to 56 days) in the neuromuscular, sensory-motor, cardiorespiratory, digestive and excretory, and immune systems, as well as in the metabolism and hemodynamics. DI reproduces practically the full spectrum of changes in the body systems during the exposure to microgravity. The numerous publications from Russian researchers, which until present were mostly inaccessible for scientists from other countries are summarized in this work. These data demonstrated and validated DI as a ground-based model for simulation of physiological effects of weightlessness. The magnitude and rate of physiological changes during DI makes this method advantageous as compared with other ground-based microgravity models. The actual and potential uses of the model are discussed in the context of fundamental studies and applications for Earth medicine.

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Section: Effects On the Cardiorespiratory Systemmentioning

confidence: 99%

Dry Immersion as a Ground-Based Model of Microgravity Physiological Effects

et al. 2019

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“…The value of II "Myocardium" ≤ 14 % at rest and ≤ 17 % with physical activity (PhA) was interpreted as normal. II "Myocardium" 15-19 %, 20-25 % and more than 25 % reflected the borderline state associated with the MEPhS stress of (prenosological state), overstrain (premorbid state) and depletion of myocardial function reservesdevelopment of signs of pathology, respectively [5]. Two functional tests were performed: a test with PhA and the active ortoclinostatic test (AOCT).…”

Section: Methodsmentioning

confidence: 99%

Unresolved Cardiovascular Disease Prevention Issues

Esina¹,

Zuykova²,

Strachova³

et al. 2019

Proceedings of the International Conference on Health and Well-Being in Modern Society (ICHW 2019)

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The prevalence of risk factors for cardiovascular diseases and the electrophysiological state of the myocardium in male patients with somatoform dysfunction of the vegetative nervous system was studied. Among the risk factors, the leading positions were taken by stress, low physical activity and smoking. A method has been developed for diagnosing prenosological changes in the electrophysiological state of the myocardium associated with the tension of the regulatory systems in male patients with somatoform dysfunction of the vegetative nervous system in order to identify prenosological conditions and increased risk of the cardiovascular disease. The correlation between the sum of points according to the developed method and indicators characterizing the state of the sympathetic section of the vegetative nervous system and the electrophysiological state of the myocardium have been proved. The threshold score for risk factors for the cardiovascular disease, corresponding to the presence of prenosological changes in the electrophysiological state of the myocardium in male patients with somatoform dysfunction of the vegetative nervous system is 8. The diagnostic sensitivity of the method in male patients with somatoform dysfunction of the vegetative nervous system with a threshold score of 8 was 80 %, specificity-70.8 %.

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