Abstract
The normal patterns of human growth hormone (HGH) secretion in an ovulatory mentrual cycle were studied. Nineteen normal subjects recorded daily basal body temperatures (BBT). Their mean day of BBT rise was 15.6. They were each studied on day 5 and day 25 of the cycle with an insulin tolerance test in a fasting ambulatory state using 0.1 unit of regular insulin per kilogram as a stimulus. Measurements of blood glucose and plasma HGH showed no significant difference between the two tests. Fasting nonesterified fatty acid levels (NEFA) were also measured and these were not different. One subject was followed through an ovulatory cycle with daily fasting basal blood samples and these were analyzed for their glucose and HGH content. Although the glucose level did not change the HGH level rose at ovulation and premenstrually. It is concluded that HGH secretion does not change significantly between the proliferative and the secretory phases of the menstrual cycle.
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