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The influence of prior exercise at anaerobic threshold on decompression sicknessThis study was conducted to examine the effects of exercise prior to decompression on the incidence of altitude decompression sickness (DCS). In a balanced, two-period, crossover trial, 39 healthy individuals were each exposed twice, without denitrogenation, to an altitude of 6400 m in a hypobaric chamber. Under the experimental condition, subjects exercised at their predetermined anaerobic threshold levels for 30 min each day for 3 d prior to altitude exposure; the other condition was a non-exercise control. Under both conditions, subjects performed exercise simulating space extravehicular activities at altitude for a period of 3 h, while breathing 100 percent oxygen. There were nine preferences (untied responses) for DCS, four under control and five under experimental conditions; all were Type I, pain-only bends. No carry-over effects between exposures was detected, and the test for treatment differences showed p = 0.56 for symptoms. No significant difference in DCS preferences was found after subjects exercised up to their anaerobic threshold levels during the days prior to decompression.
Document ID
Document Type
Reprint (Version printed in journal)
Kumar, K. V. (Krug Life Sciences, Inc. Houston, TX, United States)
Waligora, James M. (NASA Johnson Space Center Houston, TX, United States)
Gilbert, John H., III (Krug Life Sciences, Inc. Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1992
Publication Information
Publication: Aviation, Space, and Environmental Medicine
Volume: 63
Issue: 10
ISSN: 0095-6562
Subject Category
Distribution Limits