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American Journal of Clinical Nutrition, Vol 7, 175-179, Copyright © 1959 by The American Society for Clinical Nutrition, Inc.

Food Intake and Weight Changes of Youths on an Exploring Expedition

A. M. W. PORTER M.B., B.S.

The opportunity was taken during an expedition to central Iceland to record at frequent intervals the body weights of the 50 schoolboy members. These subjects could be divided into two groups: 28 "marchers" who worked hard but intermittently, and 20 "surveyors" whose task was less strenuous but more continuous.

The ration scale provided an intake of about 3,640 cal/day for all the subjects; at base camp the rations were occasionally supplemented to increase the over-all mean intake to about 3,670 cal/day.

The majority of subjects lost weight while out on a march; the most frequent rates of loss were 0.1 and 0.2 kg/day. Only minor fluctuations occurred in the body weights of the "surveyors."

It is concluded that the ration scale was inadequate for the "marchers" and of doubtful adequacy for the "surveyors."






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Copyright © 1959 by The American Society for Nutrition