Author:
Weitzman Elliot D.,deGraaf Andries S.,Sassin Jon F.,Hansen Tomar,Godtlibsen Ole B.,Perlow Mark,Hellman Leon
Abstract
ABSTRACT
A group of 7 healthy male subjects was studied in regard to sleep stages and 24 h plasma cortisol and growth hormone patterns during the 4 seasons of the year in an Arctic environment (Tromsø, Norway). No difference in total sleep or sleep stage per cents was found for any of the yearly seasons. A small but statistical significant increase in mean plasma cortisol concentration and amount secreted for 24 h was found for the autumn-winter seasons, as compared with the spring and summer. However, no difference in the circadian curve of cortisol hormonal pattern was found. All subjects secreted growth hormone shortly after sleep onset at night and no difference was found as a function of season of the year.
Subject
Endocrinology,General Medicine,Endocrinology, Diabetes and Metabolism
Cited by
59 articles.
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