The current case study intended to measure blood glucose fluctuation in 2 marathon runners during a 100-km race using a continuous glucose-monitoring system (CGMS) and investigate the relationship between glucose profile and change in running speed. Two experienced ultramarathon runners participated in this study. A CGMS glucose sensor was inserted into the subcutaneous abdominal tissue at 35 h before the 100-km race, and the glucose profile was monitored continuously until the end of the race. Race pace and energy intake during the race were recorded. Participants finished the race in 6h:51min:17s (runner A) and 8h:56min:04s (runner B), and the race-pace decrement ratios were 17.6

作者：Yasuo, Sengoku；Kazuteru, Nakamura；Hitomi, Ogata；Yoshiharu, Nabekura；Shoichiro, Nagasaka；Kumpei, Tokuyama

来源：International journal of sports physiology and performance 2015 年 10卷 1期