Zinc Losses during Prolonged Cold Water Immersion
Fluid and ion shifts have been reported during head-out immersion, cold exposure and under hyperbaric conditions, with diuresis, natriuresis, and kaliuresis consistent observations (1). The finding that the time courses of water, Na, K, Ca, Mg and Zn excretion coincide after volume expansion in man (3) suggests that similar changes may occur for Zn during immersion. However, this has not been studied. Zn serves vital roles in many cellular responses, including energy metabolism and muscle function, and depletion could impair performance during prolonged immersion in cold water. Thus, characterizing changes in Zn was of interest.
KeywordsCold Exposure Cold Water Immersion Hyperbaric Condition Prolonged Immersion 2Naval Medical Research Institute
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- 2.Ohno, HT, K Yahata, R Yamashita, R Doi, N Taniguchi and A Kuroshima. Zinc metabolism in human blood during acute exposure to cold. Res Comm Chem Path Pharm 52: 251–256, 1986.Google Scholar