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Caloric Requirements of Man in the Antarctic

Arctic Aeromedical Laboratory, Fairbanks, Alaska

Dietary surveys and estimates of energy expenditure were made in a small but representative sample of International Geophysical Year (IGY) scientists and Navy personnel at Little America V in the Antarctic during the International Geophysical Year, 1957–'58. For the IGY personnel the average daily expenditure was about 3775 Cal. and the consumption 3400 Cal. per man in March, 3370 and 4396, respectively, in June, and 4175 and 4285, respectively, in September. The Navy personnel expended 3660 Cal. and consumed 4925 Cal. per day in September. On this regimen all of the subjects gained weight during the Antarctic stay. It may therefore be assumed that the caloric intakes reported here are, on the whole, in excess of actual caloric requirements under these conditions. The values for the percentages of total calories consumed furnished by protein, fat and carbohydrate are not different from those reported for United States troops eating a garrison ration in Arctic or temperate climates.

Manuscript received 9 January 1961.