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Excerpt
The positive relationship between dietary carbohydrate, glycogen concentration and endurance performance has already been established. The goal of this study was to evaluate dietary intake and anthromopetric characteristic of marathon athletes. It was evaluated 31 competitive marathon athletes, 8 female and 23 male, members of the Runner's School of the Federal University of Rio de Janeiro; their ages ranged from 19 to 47 years old. They trained an average of 3 hours daily, six days of week, with minimum of 3 competing events per year. Dietary data were obtained from 24 hours recall, three days self-register, and food frequency questionnaire. It was also questioned the consumption of supplements, complements and specially elaborated products for athletes. The percentage of body fat (BFP) was calculated according to Pollock(1993). Fat mass (FM), fat-free mass (FFM) and body mass index (BMI) were also determined. Kruskall-Wallis test, was used to evaluate the mean consumption of calories, macronutrients and micronutrients, as recorded in the 24-hour recall and 3-day self-register, at a 5 percent (p<0,05). Dietary carbohydrate consumption varied from 53% to 54% for male and female athletes, respectively. It was observed a high consumption of vitamin C (100% female and 64,3% male) and multivitamin and minerals as supplements(40% female and 42,8% male). 100% of female athletes and 78,3% of the male consumed some kind of product for athletes. Hydroeletrolic recharges were the most consumed product by athletes of both sexes. Female and male athletes measured respectively: 1,64m(±0,17) and 1,74 m (±0,04) of high; 59,4 Kg(±3,11) and 67,9 Kg (±9,16) of weight; 22,0(±3,25) and 22.4 (±2,48) for BMI (Kg/m2; 23,% (±5,67) and 11,26% (±6,48) for BFP. These data suggest that individual Nutritional Education is necessary for athletes of both sexes and coaches as a prevent factor from reducing endurance performance.
