Abstract

SummaryThe phospholipid composition of the blood plasma of nine healthy athletes was examined before and after the subjects were placed in a tank filled with water at 2°. It was found that the phosphatidylglycerol (GPG) content of the plasma was very significantly elevated immediately after and 7 min following the exposure to the cold. Only one other phospholipid, phosphatidic acid, showed much lesser elevation of GPG after the subjects left the cold-water tank. All the remaining individual phospholipids and total lipid phosphorus were not affected by the experiment. The possible significance of these changes of GPG in stress are discussed.

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