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首页> 外文期刊>Wilderness & environmental medicine >Case Study: Providing Nutritional Support to an Ultraendurance Runner in Preparation for a Self-Sufficient Multistage Ultramarathon: Rationed Versus Full Energy Provisions
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Case Study: Providing Nutritional Support to an Ultraendurance Runner in Preparation for a Self-Sufficient Multistage Ultramarathon: Rationed Versus Full Energy Provisions

机译：案例研究：为超级安全跑步者提供营养支撑，以准备自给自足的多级ullaramaraton：配给与全能量规定

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To assess the impact of rationed versus full estimated energy provisions on markers of physiological strain in response to a simulated 250 km multistage ultramarathon (MSUM), on two separate occasions, the ultraendurance runner performed a laboratory simulated MSUM, with rationed (RP: 3303 +/- 75 kcal.day(-1)) and full (FP: 7156 +/- 359 kcal.day(-1)) provisions. Total daily energy expenditure was determined using dual-method indirect calorimetry. Resting metabolic rate, iDXA, and body water were measured at baseline, day 3, and post-MSUM. Blood, urine, and feces were collected, and mood state was measured, d 1 to 5 (before and after running) to determine various physiological strain indices. Heart rate, RPE, thermal comfort, gastrointestinal symptoms, and non-protein oxidation rates were measured every 30 min during running. Data were analyzed using single-subject design analysis and interpreted using Cohen's effect size. Energy expenditure was lower on RP (6943 +/- 145 kcal.day(-1)) than FP (7486 +/- 143 kcal.day(-1)) (Cohen's delta=-3.1). More pronounced exertional strain (RPE delta=1.2, thermal conform delta=0.6, rectal temperature delta=1.0, and plasma cortisol concentration delta=1.7) was observed on RP as the MSUM progressed. Total carbohydrate and fat oxidation during running decreased (0.76 vs. 1.82 g.min(-1); delta=-3.9) and increased (0.91 vs. 0.54 g.min(-1); delta=3.7), respectively, more profoundly on RP as the MSUM progressed. Gastrointestinal symptoms were modestly lower in RP (delta=-0.26). Exercise-induced leukocytosis, cytokinaemia, and neutrophil responses were higher on RP. Iron status markers were trivial. Higher mood disturbance and fatigue were reported on RP. The ultraendurance runner presented greater physiological and psycho physiological disturbances, in response to a laboratory simulated MSUM, on rationed energy provisions, despite the lighter pack-weight.
机译：为了评估对生理菌株标志物的配给与全估计能量规定的影响，以响应模拟的250 km多级超声（MSUM），在两个独立的场合，超级安全转换器进行了实验室模拟MSUM，配备了（RP：3303 + / - 75 kcal.day（-1））和完整（fp：7156 +/- 359 kcal.day（-1））规定。使用双方法间接量热法测定每日总能量支出。在基线，第3天和Msum后测量休息代谢率，IDXA和体水。收集血液，尿和粪便，测量情绪状态，D 1至5（跑步前后）以确定各种生理应变指数。在跑步期间每30分钟测量每30分钟测量心率，RPE，热舒适度，胃肠道症状和非蛋白质氧化率。使用单对象设计分析分析数据，并使用Cohen的效果大小解释。在RP（6943 +/- 145 kcal.day（-1））上的能源支出低于FP（7486 +/- 143 kcal.day（-1））（Cohen的Delta = -3.1）。随着MSUM的进展，在RP上观察到更明显的稳定菌株（RPE delta = 1.2，热甜甜合实的δ= 0.6，直肠温度delta = 1.0和血浆皮质醇浓度delta = 1.7）。在运行过程中碳水化合物总量和脂肪氧化（0.76 vs.1.82 g.82 g.1）; delta = -3.9）并增加（0.91 vs.0.54 g.min（-1）; delta = 3.7），更深刻在MSUM进展时，RP。 RP（Delta = -0.26）中胃肠道症状适度降低。 rp运动诱导的白细胞增多症，细胞因子血症和中性粒细胞反应较高。铁状态标记是微不足道的。 RP报告了更高的情绪扰动和疲劳。尽管包装重量较轻，超级尿路赛道呈现出更大的生理和心理生理干扰，响应于实验室模拟的MSUM。

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