Effectiveness of Glycerol Ingestion for Enhanced Body Water Retention during Cold Water Immersion
Final rept. Dec 1988-Aug 1989
NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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The efficacy of ingesting an aqueous glycerol GLY solution to reduce diuresis and enhance body water retention during prolonged cold water dives was tested. Six subjects were assigned to either a water treatment WT or glycerol treatment GT group. During the predive period, divers drank approximately 2 liters of flavored water solutions 30 milliliters per kilogram mlkg lean body mass LBM with or without GLY 1.5 mlkg LBM. Total urine output did not differ between treatments. The amount of urinary glycerol uGLY collected during the hyperhydration period prehydration to 90 minutes after hydrating and the three-hour dive periods accounted for 4.1 and 10.3, respectively, of the total GLY ingested. Hyperhydration with GLY 1.2 mlkg LBM appears ineffective in significantly reducing body water loss in divers under the stress of prolonged cold water immersion.
- Medicine and Medical Research