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J Appl Physiol 44: 725-727, 1978;
8750-7587/78 $5.00
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Journal of Applied Physiology, Vol 44, Issue 5 725-727, Copyright © 1978 by American Physiological Society

ARTICLES

Urinary catecholamine excretion in temporary residents of high altitude

S. C. Sharma, R. S. Hoon, V. Balasubramanian and K. S. Chadha

Urinary catecholamine excretion was estimated in 50 lowlanders temporarily staying at altitudes above 3,000 m. They were divided in subgroups according to the length of their continuous stay. For comparison, 25 highlanders who were born and brought up at high altitude and 50 lowlanders who had never been to altitudes of more than 1,000 m were also studied. High catecholamine excretion was noted in temporary residents staying at high altitude for up to 30 days as compared to that in lowlanders (P greater than 0.01). The excretion rate gradually returned to basal values thereafter. Catecholamines were essentially similar in lowlanders and highlanders. The significance of these findings is discussed regarding the possible pathogenetic role of the sympathoadrenal system in the development of ill effects in respone to high-altitude exposure.




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