[Various indicators of metabolism and energy expenditure in inadequate nutrition].

The authors studied energy, nitrous, lipid, carbohydrate, mineral and vitamin metabolism in subjects aged 18-21 years exposed during 8 days to high physical loads within 4540-8495 kkal/day and given the daily diet consisting of natural food with an energy value of 3220 kkal. During the observation period, the body weight losses amounted to 3.7 kg (5.3%) of the initial weight magnitude on the average, whereas the amount of fatty component dropped by 23.9%. The test subjects manifested a decrease in work fitness, a fall in the main metabolism by 23%, reduction of the respiratory ratio to 0.67, and considerable alterations in the majority of metabolic indices. The recovery of the body status till the attainment of the initial level lasted 3-5 days. The subjects with a good physical stature tolerated the period of inadequate nutrition fairly well.