Lindeman A K
Department of Applied Health Science, Indiana University, Bloomington 47405.
Int J Sport Nutr. 1991 Mar;1(1):79-85. doi: 10.1123/ijsn.1.1.79.
Meeting the energy demands of ultraendurance cycling requires careful planning and monitoring of food and fluid intake. This case study presents the nutrient intake of a cyclist while training for and competing in the Race Across AMerica (RAAM). Carbohydrate accounted for 65% of the calories consumed during training (4,743 kcal), 75% during 24-hr races (10,343 kcal), and 78% during RAAM (8,429 kcal). Gastrointestinal complaints during RAAM included nausea, feeling of fullness, and abdominal distension. Although probably exacerbated by sleep deprivation, these problems were all diet related. Based on this experience, it appears that by controlling the carbohydrate concentration of beverages, limiting dietary fiber, and relying on carbohydrate as the primary energy source, one could both control gastrointestinal symptoms and promote optimal performance in training and in ultramarathon cycling.
满足超耐力自行车运动的能量需求需要精心规划和监控食物及液体摄入。本案例研究展示了一名自行车运动员在为环美自行车赛（RAAM）进行训练及参赛期间的营养摄入情况。在训练期间（4743千卡），碳水化合物占所摄入热量的65%；在24小时比赛期间（10343千卡），占75%；在环美自行车赛期间（8429千卡），占78%。环美自行车赛期间的胃肠道不适包括恶心、饱腹感和腹胀。尽管这些问题可能因睡眠不足而加剧，但均与饮食有关。基于这一经验，似乎通过控制饮料中的碳水化合物浓度、限制膳食纤维并将碳水化合物作为主要能量来源，既能控制胃肠道症状，又能在训练和超长距离自行车赛中促进最佳表现。
