Does carbohydrate ingestion before endurance exercise really cause hypoglycemia?

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12673
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Sports science
• Research Institution: Waseda University
• Principal Investigator: HIGUCHI Mitsuru 早稲田大学, スポーツ科学学術院, 教授 (20192289)
• Co-Investigator(Renkei-kenkyūsha): Sakamoto Shizuo 早稲田大学, スポーツ科学学術院, 教授 (00266032) ; Taguchi Motoko 早稲田大学, スポーツ科学学術院, 教授 (90360734) ; Higashida Kazuhiko 滋賀県立大学, 人間文化学部, 准教授 (50634466)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: インスリンショック / 血糖値 / 糖質摂取 / 持久性運動

Outline of Final Research Achievements

Previous studies demonstrated that carbohydrate (CHO) feeding 30-45 min before exercise results in transient hypoglycemia shortly after onset of exercise. The purpose of this study was thus to directly compare the effects of fasting vs. feeding on plasma glucose kinetics following pre-exercise carbohydrate ingestion. This results show that, transient hypoglycemia shortly after onset of exercise may occur not only after an overnight fast, but also in the fed state. In addition, subjects with higher aerobic fitness and enhanced insulin secretory capacity seem to be more prone to transient hypoglycemia following pre-exercise carbohydrate ingestion under fed and fasted conditions, respectively.

Free Research Field

スポーツ栄養学