Title
Respiratory sinus arrhythmia on the ESA-short-arm human centrifuge Respiratory sinus arrhythmia on the ESA-short-arm human centrifuge
Author
Faculty/Department
Faculty of Sciences. Physics
Faculty of Medicine and Health Sciences
Publication type
article
Publication
New York ,
Subject
Human medicine
Engineering sciences. Technology
Source (journal)
IEEE engineering in medicine and biology magazine / Institute of Electrical and Electronics Engineers [New York, N.Y.] - New York
IEEE engineering in medicine and biology magazine / Institute of Electrical and Electronics Engineers [New York, N.Y.] - New York
Volume/pages
28(2009) :6 , p. 86-91
ISSN
0278-0054
0739-5175
0739-5175
ISI
000271834500016
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
In this article, we investigated the hypothesis that the effects of hypergravity on respiratory sinus arrhythmia (RSA) can mimic the effects observed after spaceflight cardiovascular deconditioning. Artificial gravity along the head-to-feet axis on a short-arm centrifuge induces gravity gradients. This physiological condition of significantly higher g at the feet than at the heart level is specific and likely induces blood sequestration in the lower limbs. After spaceflight, astronauts are in a condition of cardiovascular deconditioning, where blood pooling in the lower part of the body and autonomic adaptation are factors contributing to orthostatic intolerance and changes in heart-rate variability (HRV). ECG and respiration were recorded during imposed and controlled breathing (ICB) protocols, which were repeated at different levels of artificial gravity as well as during supine and standing control conditions, and the changes were analyzed.
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