Short-duration spaceflight impairs human carotid baroreceptor-cardiac reflex responses

Details Short-duration spaceflight impairs human carotid baroreceptor-cardiac reflex responses Short-duration spaceflight impairs human carotid baroreceptor-cardiac reflex responses

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992japh...73..664f&link_type=abstract

Journal of Applied Physiology (ISSN 8750-7587), vol. 73, no. 2, Aug. 1992, p. 664-671.

Astronomy and Astrophysics

Astronomy

1

Atmospheric Composition, Infrared Spectrometers, Mars Atmosphere, Mars Surface, Albedo, Carbon Monoxide, Line Spectra, Mars Volcanoes, Orography, Spectrum Analysis, Water

Scientific paper

The effect of a spaceflight on the vagally mediated baroreceptor-cardiac reflex responses of humans were investigated by measuring the responses (provoked by neck pressure changes) in supine position and the heart rate and blood pressure in the supine and standing positions in 16 astronauts before and after 4- to 5-day long Space Shuttle missions. The results showed that exposures to spaceflight resulted in reduced baseline levels of the vagal-cardiac outflow and the vagally mediated responses to changes of the arterial baroreceptor input and that these changes contribute to postflight reductions of astronauts' ability to maintain standing arterial pressures.

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