Human reserve evaluation problems during pre- and post space flight periods
- Paper number
IAC-06-B4.3.07
- Author
Dr. Victor M. Baranov, Institute for Biomedical Problems, Russia
- Coauthor
M.D. Andrew Pashchenko, Institute for Biomedical Problems, Russia
- Coauthor
Dr. Michail Baranov, Institute for Biomedical Problems, Russia
- Coauthor
Dr. Roman Baevsky, Institute for Biomedical Problems, Russia
- Year
2006
- Abstract
Introduction. Results of experiments conducted during long space flights on the orbital station “Mir” and ISS have shown the homeostasis of the essential systems, one of them cardiorespiratory system, is supported by activity of the regulatory systems, which have some functional reserve. It is important that both the homeostasis, traditional for medical practice and functional reserves evaluation must be before a space flight, during space flight and after landing. Methods. New way combining traditional clinical and space medicine methods has been developed for functional reserves to be evaluated during pre- and post space flight examination. Based on these new approach hardware and software systems Reserve was developed. The system Reserve includes classical cardiological methods (ECG, impedance cardiogram, phonocardiogram and so on) and space medicine methods. The new methods for arrhythmia prognosis (high resolution ECG) and ischemia diagnosis (dispersion mapping ECG) are in the system Reserve too. Many functional tests (psychophysiological, physical, and orthostatic) are used during functional reserves evaluation. The system Reserve was used during examination of 22 health volunteers, rescuers of the center “CentroSpas” (Russia), which were on 48 hours duty and 20 pilots of civil aviation during rehabilitation. Results. All examined rescuers were divided on two groups according Stress Index (SI), one of heart rate variability parameters: group 1 – SI increased after 24 hours of duty; group 2 – SI decreased after 24 hours of duty. The most changes cardiologic parameters were revealed in the group 2. The most differences were observed during orthostatic test. Another distinct parameter was VLF spectral power, which was higher in the group 2. While testing pilots of civil aviation the psychophysiological tests were applied as functional load. It was clearly, that pshychophysiological load activated sympathetic part of autonomous system, increased pulse wave velocity, speeded up breath rate, slowed down constriction of the heart, and grew up heart constriction power. The system “Reserve” was able to diagnose a first sign of dissonance in adaptation mechanism even due to slight harm influence, which caused only minor changes in regulatory system. Conclusion. There is evidence, that astronaut’s functional reserve evaluation before and after space flight can be based on series of functional tests and examination of cardiovascular regulation, heart constriction power and electrical stability of myocardium at the same time.
- Abstract document
- Manuscript document
IAC-06-B4.3.07.pdf (🔒 authorized access only).
To get the manuscript, please contact IAF Secretariat.