title: Orthostatic heart rate responses after prolonged space flights.
abstract: Orthostatic tachycardia (POTS) can occur after space flights. We determined orthostatic heart rate responses in 18 cosmonauts before and 3-5 days after long-term space missions. Cosmonauts undergoing a cardiovascular training program in space experienced only moderate POTS after their return to earth. Cardiovascular countermeasures may have attenuated POTS. Another possible interpretation is that cardiovascular deconditioning is not sufficient to elicit full blown POTS in the absence of additional genetic or environmental factors.
authors.affiliation: Institute of Clinical Pharmacology, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany. tank.jens@mh-hannover.de
authors.forename: Jens
authors.initials: J
authors.lastname: Tank
authors.forename: Roman M
authors.initials: RM
authors.lastname: Baevsky
authors.forename: Irina I
authors.initials: II
authors.lastname: Funtova
authors.forename: André
authors.initials: A
authors.lastname: Diedrich
authors.forename: Irina N
authors.initials: IN
authors.lastname: Slepchenkova
authors.forename: Jens
authors.initials: J
authors.lastname: Jordan
mesh_terms: D000328:Adult; D018493:Cardiovascular Deconditioning / Q000502:physiology; D015444:Exercise / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D054972:Postural Orthostatic Tachycardia Syndrome / Q000503:physiopathology* / Q000517:prevention & control; D013026:Space Flight; D014893:Weightlessness / Q000009:adverse effects*