Training Effects on Nutrient Intake in Male Collegiate Cross Country Runners

Abstract

2373 Physical activity and athletic performance are enhanced by optimal nutrition. There have been few studies published investigating the dietary practices of college-age male cross-country runners. PURPOSE: To assess the nutritional adequacy of collegiate cross-country runners at three phases during their competitive season. METHODS: Three-day diet records of nine male collegiate cross-country runners were collected at three phases during a season: early season, pre-taper, and during the taper. Assessment of the nutritional adequacy of their diets was based on the Joint Position Statement published by the American College of Sports Medicine, the American Dietetic Association, and the Dietitians of Canada. RESULTS: The mean carbohydrate intake (7.9g/kg) was within the recommended range, while fat intake (33% of total energy intake) and protein intake (2.0g/kg) were consistently above the recommendations. The mean intake for all micronutrients analyzed met the Recommended Dietary Allowances (RDA) except for magnesium (61%) and vitamin E (67%). There was a tendency for all macro- and micro-nutrients to decrease from early season to pretaper and then increase during the tapering phase. Magnesium and vitamin B6 intake decreased significantly from early season to pre-taper by 29% and 34%, respectively. CONCLUSIONS: Although the mean intake for most micronutrients was close to 100% of the RDAs, a significant proportion of individual runners were not meeting the RDA. Collegiate cross-country runners should consume nutrient dense diets to insure adequate nutrient intake throughout the cross-country season.