Relationship between race pace fluctuation and blood glucose fluctuation during 100 km marathon race

本研究旨在通过对历届比赛成绩的分析，明确实现100公里高成绩的比赛节奏模式。此外，我们还测量了100公里马拉松比赛中的血糖波动，旨在探讨血糖波动与比赛速度波动的关系。结果表明，在7小时内完成比赛的优秀超级马拉松运动员的比赛速度减慢幅度明显较小。另一方面，跑步者在完成比赛超过9小时后，跑步速度突然减慢。此外，在优秀的超级马拉松跑步者中，在7小时内完成比赛的人的血糖浓度比在9小时左右完成比赛的人的血糖浓度下降得更小，即使是跑得更快的人的能量摄入量也更小。结果表明，100公里跑速度波动较小是获得最高水平成绩的关键，无论能量摄入量多少，防止血糖突然下降的能力和适当的能量摄入时机可能与100公里跑的高水平成绩有关。

The present study aimed to clarify the race pace pattern to achieve high 100 km performance by analyzing past race results. Additionally, we measured blood glucose fluctuation during 100km marathon race and aimed to investigate the relationship between blood glucose fluctuation and race pace fluctuation. From results, it was clarified that race pace decrement was significantly smaller in elite ultra-marathon runners who finish the race under 7 hours. On the other hand, abrupt decrement in running velocity was observed in runners finishing the race over 9 hours. Furthermore, in elite ultra-marathon runners who finish the race under 7 hours showed smaller decrease in blood glucose concentration compared to a runner who finished the race around 9 hours, even the energy intake amount was smaller in the faster runner. As conclusion, it was suggested that it is important to run a 100km race with small race pace fluctuation to achieve top level performance, and a capacity to prevent abrupt blood glucose decrement regardless to energy intake amount and an appropriate timing of energy intake could relate to high 100 km race performance.