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Results for “SLEEP DEPRIVATION”

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PubMed1983

The effect of sleep deprivation on the plasma levels of hormones during prolonged physical strain and calorie deficiency.

The effect of sleep on the serum levels of hormones during prolonged heavy physical strain and calorie deficiency were investigated in 19 young men participating in a 5 day ranger training course with a calorie consumption of 35,000-50,000 kJ X 24 h-1, and a calorie intake of about 6,000 kJ X 24 h-1. The subjects were divided into two groups: the stress group (8 cadets) were allowed no organized sleep during the course, whereas the sleep group (9 cadets) had 3 h sleep each night. Small but significantly (p less than 0.01) higher serum levels were found in the sleep group compared to the stress group for cortisol, growth hormone and testosterone. No such differences were found for catecholamines, androstendione, dihydrotestosterone, LH, triiodothyronine and thyroxine. Androstendione and dihydrotestosterone decreased in parallel with testosterone (r = 0.5) during the course, changes which directly or indirectly seem to be due to decreased testicular secretion. The changes found during this investigation for the other hormones are similar to changes found during previous courses. LH showed only small variation during the course and cannot explain the decreased secretion from the testis or the difference between the two groups for testosterone. All hormones were normal within 23 days after the end of the course.

Adrenal Cortex Hormones↗
PubMed1983

[Study approach and initial results of the effect of sleep deprivation on the depressive syndrome].

After a brief review of previous investigations into the antidepressant effect of sleep withdrawal, attention is drawn to problems arising from simultaneous treatment with antidepressants. A method for recording the effects of sleep withdrawal alone is also described. The results indicate that treatment by partial withdrawal of sleep during the second half of the night, tends to have a positive effect on the symptoms of depression and on the psychophysical status of the patients. The author concludes with an overview of the problems still outstanding.

Combined Modality Therapy↗
PubMed1992

Sleep deprivation and the postnatal blues.

This prospective study of 63 women was designed to investigate the relationship between sleep disruption prior to the birth, during labour and in the early postpartum period and the subsequent development of the postnatal blues. The results from this preliminary study suggest that two factors: (a) a night-time labour; and (b) a history of sleep disruption in the latter stages of pregnancy, may have aetiological importance in the development of postnatal blues. There was little evidence from this study to suggest that sleep disruption on the nights following the birth, the third sleep factor investigated, had any impact on the expression of the blues.

Adult↗