Biochemical Responses of Men to Simulated Air Dives of 100 Feet
NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
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Six men were subjected to a simulated dive in air to 100 FSW for one hour followed by a 70-minute decompression. Total 24 hour excretions of 12 urinary parameters were measured for two days prior to and 11 days following the dives. Blood serum constituents were determined in pre-dive samples, in samples taken immediately upon reaching the surface and in sera obtained for 9 post-dive days. Urinary hydroxyproline increased on the 7th day while phosphorus decreased on the 6, 8, and 9th days post-dive. Serum electrolyte imbalance occurred during the first 24 hours after the dive and again on the 7th day. The first episode results primarily from low potassium excretion while the second from a high sodium output. The present findings provide tentative evidence that recovery periods of 7-9 days may necessarily follow shallow or medium depth dives.
- Stress Physiology