Accession Number:

AD0423385

Title:

EFFECT OF STRESS ON NUTRIENT REQUIREMENTS OF MAN.

Descriptive Note:

Progress rept. 1 Nov 62-31 Oct 63,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s):

Report Date:

1963-10-31

Pagination or Media Count:

1.0

Abstract:

The major experimental projects involved three studies upon the physiological effect of the reversal of night and day and two studies on the ffect of examinations. Subjects were evaluated psychiatrically in all trials, in two of the reversal studies and one of the examination studies psychiatric interviews were nerformed in addition to the physiological and biochemical measurements. weights and pulse rates were examined routinely on all days of the experimental periods. Urines were analyzed for nitrogen, inorganic sulfate sulfur, creatinine and 17-hydroxycorticosteroids and fecal samples for total nitrogen. This involved the laboratory in some 25,000 individual determinations. Samples are still to be analysed for calcium balance, serum Vitamin A and serum chloesterol. Two studies involving two groups of five students showed that when such individuals were subjected to a reversal of night and day accompanied by an obligation to work during such reversed periods there was enhanced excretion of nitrogen, inorganic sulfate sulfur and during the reversal periods these were paralleled by the excretion of 17-hydroxysteroids very little effect was observed on the excretion of creatinine, sodium and potassium. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE