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Operational point of neural cardiovascular regulation in humans up to 6 months in space
Journal of applied physiology
Entering weightlessness affects central circulation in humans by enhancing venous return and cardiac output. We tested whether the operational point of neural cardiovascular regulation in space sets accordingly to adopt a level close to that found in the ground-based horizontal position. Heart rate (HR), finger blood and brachial blood pressure (BP), and respiratory frequency were collected in 11 astronauts from nine space missions. Recordings were made in supine and standing positions at leastdoi:10.1152/japplphysiol.00883.2009 pmid:20075261 fatcat:lqdctzpzubgwnplklzynjo56oi