The effects of long-term microgravity on autonomic regulation of blood circulation in crewmembers of the international space station

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The effects of long-term microgravity on autonomic regulation of blood circulation in crewmembers of the international space station

Roman –ú. Baevsky1Irina I. Funtova1–ēlena S. Luchitskaya1–źnna G. Chernikova1*

1 Institute of Biomedical Problems of the Russian Academy of Sciences, 123007, Russia, Moscow, 76A Khoroshevskoye Ch.

* Corresponding author:
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The article presents the results of space experiment ‚ÄúPneumocard‚ÄĚ. The investigation involved all 25 Russian members of the ISS crew. The total of 226 sessions were made including 130 aboard the ISS, 50 prior to launch and 46 on return from mission.

The objective was to study effects of the spaceflight factors on autonomic regulation of blood circulation, respiration and cardiac contractility during long-duration mission. The purpose was to secure new research data that would clarify our present view of adaptation mechanisms.

Registered were the following signals: electrocardiogram, impedance cardiogram, seismic cardiogram, pneumotachogram, finger photoplethysmogram. A set of hard- and software was used.

Autonomic regulation of blood circulation by HRV analysis was investigated. It was shown that at the onset of a space mission parasympathetic involvement in regulation increases typically with subsequent mobilization of additional functional reserve. It guided the development of a functional states mathematical model incorporating the established types of autonomic regulation.

Our data evidence that the combination of HRV analysis, pre-nosology diagnosis and probabilistic estimate of the pathology risk can reinforce the medical care program in space missions.

Imprint

Roman –ú. Baevsky, Irina I. Funtova, –ēlena S. Luchitskaya, –źnna G. Chernikova. The effects of long-term microgravity on autonomic regulation of blood circulation in crewmembers of the international space station; Cardiometry; No.5; November 2014; p.35-49; DOI:10.12710/cardiometry.2014.5.3549 Available from: www.cardiometry.net/no5-november-2014/long-term-microgravity

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