Exercise response to simulated weightlessness.

Full Abstract

Two bed rest analog studies of space flight were performed; one 14 d and the other 28 d in duration. Exercise response was studied in detail during the 28 d study and following both the 14 d and 28 d studies. This paper relates the results of these studies to physiologic changes noted during and following space flight. The most consistent change noted after both bed rest and space flight is an elevated heart rate during exercise. A second consistent finding is a postflight or postbed rest reduction in cardiac stroke volume. Cardiac output changes were variable. The inability to simulate inflight activity levels and personal exercise makes a direct comparison between bed rest and the results from specific space flights difficult.

Author information

Author/s: Sawin, C F (CF); Rummel, J A (JA); Buderer, M C (MC);

Affiliation: Lyndon B. Johnson Space Center, National Aeronautics and Space Administration, Houston, TX 77058, USA.

Journal and publication information

Publication Type: Journal Article

Journal: Acta astronautica (Acta Astronaut), published in England. (Language: eng)

Reference: 1979-Oct; vol 6 (issue 10) : pp 1273-87

Dates: Created 2002/03/19; Completed 2002/06/05; Revised 2007/11/15;

PMID: 11902171, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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