Rapid Rehydration and Moderate Plasma Glucose Elevation by Fluid Containing Enzymatically Synthesized Glycogen

DOI Web Site 被引用文献2件 参考文献39件
  • INAGAKI Kei
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • ISHIHARA Kengo
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • ISHIDA Mariko
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • WATANABE Ai
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • FUJIWARA Mika
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • KOMATSU Yuko
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • SHIRAI Mika
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • KATO Yoshiho
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • TAKANEZAWA Ami
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University
  • FURUYASHIKI Takashi
    Institute of Health Sciences, Ezaki Glico Co., Ltd.
  • TAKATA Hiroki
    Institute of Health Sciences, Ezaki Glico Co., Ltd.
  • SEYAMA Yousuke
    Department of Human Nutrition, School of Life Studies, Sugiyama Jogakuen University

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Enzymatically synthesized glycogen (ESG) has high solubility and its solution has low osmotic pressure. Therefore ESG solution could be rapidly absorbed and could be adequate for water rehydration and carbohydrate supplementation during exercise. The object of this study was to evaluate the gastric emptying time and plasma glucose elevation after an administration of ESG solution in comparison with another carbohydrate solution by using a laboratory animal. Male BALB/c mice were administered 10% w/v solution of glucose, maltodextrin, starch, naturally synthesized glycogen (NSG) and ESG at a dose of 20 μL/g body weight for the measurement of gastric emptying rate (Experiment 1) and 10 μL/g body weight for the measurement of plasma glucose elevation (Experiment 2). The osmolarity of gastric content was lower in the ESG and maltodextrin group than the other carbohydrate group. Weight of gastric fluid was significantly lower in the ESG and water group than the glucose group (p<0.01). Plasma glucose level was significantly lower in the ESG group than the glucose group from 0 to 60 min after administration (p<0.01), whereas plasma glucose level was same from 60 to 120 min for the ESG and glucose group (p=0.948). In Experiment 3, BALB/c mice ran on a treadmill for 2 h and were administered 8% of ESG or glucose solution (1.75, 3.5 or 7.0 μL/g body weight) every 20 min during running. There was no difference in post-exercise muscle glycogen level. These data suggest that 1) ESG beverage does not disturb water absorption because of its short gastric emptying time and 2) ESG slowly elevates plasma glucose level and maintains it for a prolonged time compared to the glucose solution.

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