O'Hara W J, Allen C, Shephard R J, Gill J W
Br J Sports Med. 1977 Jun;11(2):83-7. doi: 10.1136/bjsm.11.2.83.
A 55 year old runner covered 160 km within a 20 hour period. His speed averaged 8.16 km/h, at an estimated 59.1% of maximum oxygen intake. After the first four hours of running, one of five fluids was taken in rotation every twelve minutes. Volumes ingested whe heart rate for the final four hours (125/min) was not increased relative to oxygen consumption for this portion of the run. Constancy of heart rate, continued urine production and formal fluid balance calculations all indicate that hydration was well maintained over the run. Caloric intake averaged 480 kcal/h (2.01 MJH), being greatest fro the ice-creas/syrup mixture; the energy deficit (56/KA/H, 235 kJ/h) was small during that part of the run in which food was provided.
一名55岁的跑步者在20小时内跑完了160公里。他的平均速度为8.16公里/小时，估计为最大摄氧量的59.1%。在最初的四个小时跑步后，每12分钟轮流摄入五种液体中的一种。在最后四个小时（心率为125次/分钟）摄入的液体量相对于该部分跑步的耗氧量并未增加。心率恒定、持续的尿液生成以及正式的液体平衡计算均表明，在整个跑步过程中水分摄入得到了良好维持。热量摄入平均为480千卡/小时（2.01兆焦/小时），其中冰淇淋/糖浆混合物的热量摄入最高；在提供食物的那段跑步过程中，能量 deficit（56千卡/小时，235千焦/小时）很小。 （注：原文中“energy deficit (56/KA/H, 235 kJ/h)”这里的“56/KA/H”表述似乎有误，可能是“56 kcal/h” ）
