[Human nutrition in prolonged autonomous crossings over drifting ice]. / Pitanie liudei v dlitel'nykh avtonomnykh perekohdakh po dreifuiushchim l'dam.

The authors describe the experience gained with nutrition for participants of ski transitions over drifting ice of the Arctic, organized by the newspaper "Komsomolskaya Pravda" in 1972, 1976 and 1979, including a 76-day transition towards the North Pole. Use was made of dehydrated products with a daily diet mass of 800-3300 g per man, in which fat content was 40-45% of total caloricity, and that of proteins 12-18%. Hot food was taken not less than 2 times a day (breakfast and supper). If the number of transitions exceeds 8-9 a day, it is necessary to have daytime rest and to take hot food. Additional intake of vitamins, particularly of vitamin C, is required, especially during transitions lasting over 20-25 days. If the transitions last over 35-40 days, it is required that additional food and fuel should be supplied. Optimal duration of the intervals between additional food supplies constitutes 12-15 days, the maximal permissible one 25-30 days. It is advisable to have rest days and high-caloric diet every other 15-20 days. The daily energy deficiency amounting to 1250-1500 kcal per man enables the trained group to maintain high physical and intellectual working capacity. However, overall energy deficiency should not exceed 30 000-40 000 kcal per man.

[Use of freeze-dried products in weightlessness]. / Ispol'zovanie produktov sublimatsionnoi sushki v usloviiakh nevesomosti.

The paper describes the manufacture of food products that can be eaten in weightlessness with the aid of regular table-ware. The consistence of products was altered as a result of an addition of water or modified starch. The resultant products were tested during short-term weightlessness aboard the aircraft-laboratory TU-104A. It was demonstrated that in weightlessness products having sufficient viscosity can be eaten with the help of regular table-ware. An addition of thickening agents, e. g. modified starch, helped to obtain products with necessary properties.

[Nutritional pattern of the "Komsomolskaya Pravda" Arctic expedition]. / K voprosu o pitanii poliarnoi ekspeditsii "Komsomol'skoi Pravdy"

Data on the chemical composition, nutritional value and caloricity of food ration used by the "Komsomolskaya Pravda" expedition during ski marches in the Arctics are reported. The rations consisted chiefly of dehydrated products and weighed 800-1000 g. The daily caloricity of the rations amounted to 3400 and 4400 great calories.