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[Body fat compartment and its relationship to food intake and clinical chemical parameters during extreme endurance performance].

The purpose of this study was to examine the changes of the fat compartment and its relations to the corresponding blood chemistry and nutritional parameters of 55 participants of an ultra long distance run of 1000 km which consisted of 20 daily runs of 50 km. During the whole event the weight showed a falling tendency, significantly paralleling the cholesterol levels. In the middle of the run the values did not change any longer. The fat mass and all skinfolds and circumferences showed a continuously falling tendency. Only the thigh-skinfold initially grew and came down from the 4th day on. The serum blood concentrations of cholesterol and triglycerides of both sexes were decreased until the 6th and 8th day. Then a distinct increase was observed, but the initial values were not restored. The average daily energy intake of the men (women) was 4260 (3033) kcal/d, the average nutrient intake being 602.7 (431.5) g carbohydrates/d, 146.5 (103.3) g fat/d, 53.1 (38.4) g saturated fatty acids/d, 43.1 (31.3) g monounsaturated fatty acids/d, 25.3 (17.2) g polyunsaturated fatty acids/d and 382.8 (279.1) mg cholesterol/d. The correlations between the cumulative fat and food-supplies on one hand and the decrease of the anthropometric measurements of fatness on the other are negative, hence body fat mass followed closely total energy and fat intake.