Dietary intake and hydration status in long-distance runners
Abstract
The aim of this study was to describe the dietary intake and hydration status in endurance runners. Ten male runners (45.5 ± 21.5years) were evaluated during a endurance run (30 km). Dietary intake was determined with a 24 h dietary recall, before the endurance run. Total energy value (TEV) and total energy expenditure (TEE) were also determined. Hydration status was measured by percentage body mass (BM) loss (Δ%), urine color and urine specific gravity (SG), before and after run. There was no significant difference (P = 0.521) between TEV (3571.0 ± 416.3) and TEE (3231.1 ± 135.4). The macronutrients intake was 60.6 ± 2.3 % (carbohydrates); 21.0 ± 2.8 % (proteins); and 18.2 ± 1.8 % (lipids). The intake of vitamin C, vitamin E, zinc, cupper and selenium were respectively: 415.3 ± 135.0 mg/d; 14.7 ± 4.6 mg/d; 9.1 ± 2.0 mg/d; 658,0 ± 118,0 μg/d and 118.0 ± 28.3 μg/d. There was a decrease of the Δ% BM (~ 3). No difference was found for GE (1026.0 ± 2.3 versus 1022.5 ± 2.8; P = 0.125) and urine color index (5.2 ± 0.6 versus 6.7 ± 0.3; P = 0.052) between pre and post endurance run, respectively. However, dehydration levels were observed among runners. It was concluded that an inadequate dietary intake and dehydration levels were observed among endurance runners.
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