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KMID : 0360919700130040318
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Journal of the Korean Medical Association
1970 Volume.13 No. 4 p.318 ~ p.326
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A STUDY ON THE ACCLIMATIZATION OF KOREAN MALES TO THE TROPICAL ENVIRONMENT
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沈相涅/Shim, S W
高光昱/車喆煥/金昇元/申漢秀/Ko, K W/Cha, C H/Kim, S W/Shin, Y S
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Abstract
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Exposing for healthy Korean male subjects to hot environment (temperature; 45±1°C, humidity; 50±10 % and air movement; 0.5m/sec in artificial climate room) for 2 hours a day consecutively for 14 days, an observation on the excretion of nitrogen and on serum LDH as well as its isozyme activities was made and the results obtained as follws;
1. Amounts fo sodium, chloride, nitrogen and potassium excreted in the sweat were decreased gradually as the day of exposure extended, and the phenomena of their acclimatization, which means the conservation of salt and nitrogen on excretion of sweat under hot environment, were observed. The divalent cathion, calcium and magnesium, however, displayed no declines in their excretion during the two weeks, showing no effects of acclimatization.
2. It was found that the total LDH activity in the serum was elevated by exposure to the hot environment and that the increment was progressively higher as a function of acclimatizing period, because of the rapid elevation of the M-LDH activity due to activated anaerobic glycolysis. The H-LDH activity due to activated anaerobic glycolysis. The H-LDH activity-showed lowered value until 5th day after exposure, followed by a gradual increase; and the M/H-LDH ratio in each recovery period resumed the normal end acclimatized value after 10th day exposure.
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KEYWORD
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