Document Detail

Effects of a multi-hour immersion with intermittent exercise on urinary excretion and tilt table tolerance in athletes and nonathletes.
MedLine Citation:
PMID:  1115692     Owner:  NLM     Status:  MEDLINE    
The circulatory and diuretic responses of athletes and non-athletes to 6-h water i-mersion with intermittent swimming exercise (series I) as well as to 8-h inactive immersions (series II) were studied. With simultaneous intermittent exercise, the normally arising diuresis during a water bath was strongly suppressed in athletes and even abolished in nonathletes. In subsequent tilt table tests, 3 of 11 (27.3%) athletes of series I and 3 of 4 (75%) of series II collapsed, whereas all nonathletes tolerated the vertical position without any subjective complaints. By use of the so-called "orthostatic index" (4) the later group, however, was also shown to yield a substantially better orthostatic stability in series I than in series II. The protective effect of intermittent physical activity for simulation of the weightless state can possibly be explained by assuming a less-reduced plasma volume via a diminished urinary excretion.
J Stegemann; U Meier; W Skipka; W Hartlieb; B Hemmer; U Tibes
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  46     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  1975 Jan 
Date Detail:
Created Date:  1975-05-19     Completed Date:  1975-05-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  26-9     Citation Subset:  IM; S    
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MeSH Terms
Adaptation, Physiological*
Physical Exertion*
Sports Medicine*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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