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Loss of Body Fluid after Open-Water Dives Conducted at Night in Warm Water
Technical rept. Mar-Apr 1991
NAVAL MEDICAL RESEARCH INST BETHESDA MD
Pagination or Media Count:
Changes in body weight were recorded in 9 divers after nighttime dives in 26 degC 78 degF water lasting 2-5 hours. A total of 34 manned dives were made during March-April 1991 as part of operator training for a SEAL delivery Vehicle SDV. Loss of body fluid was estimated directly from changes in body weight 1 liter fluid per kg body weight. Dive duration averaged 195 - 10 min. The average loss of body weight, from pre- to post-dive, was 1.31 - 0.12 kg. This translated to an estimated loss of body fluid of 1315 - 115 ml, or an hourly rate of loss of 440 - 44 ml per hour of dive.
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