The effect of exercise intensities on exogenouse carbohydrate metabolism after ^<13>C-glucose ingestion

Research Project

Project/Area Number	61580091
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	体育学
Research Institution	University of Tsukuba
Principal Investigator	ITO Akira University of Tsukuba, Institute of Health and Sport Sciences,assistant professer., 体育科学系, 助教授 (80056639)
Co-Investigator(Kenkyū-buntansha)	KURIBAYASHI Toru University of Iwate, Faculty of Education, Lecturer., 教育学部, 講師 (70161768)
Project Period (FY)	1986 – 1987
Project Status	Completed (Fiscal Year 1987)
Budget Amount *help	¥1,800,000 (Direct Cost: ¥1,800,000) Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000) Fiscal Year 1986: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywords	exogenous carbohydarte metabolism / stable isotope / ^<13>C-glucose / exercise prescription / 60%VO_2max exercise / インスリン非依存性糖尿病 / 糖代謝 / 【^(13)C】蕉糖 / 糖尿病連動処方
Research Abstract	The present study was divided into two experiments. One of the experiment was effects of 40%, 60%, 80%, 100%VO_2 max bicycle ergometer exercise on exogenous carbohydrate metabolism after cane sugar (contained naturally labeled ^13SC-glucose) ingestion. Subjects were five healthy male students, aged 20-24 yr. The results were as follows. 1) The blood glucose and serum insulin after 30min end of 60%VO_2max exercise were the lowest levels of comparison with other exerxise intensities, but since blood glucose and serum insulin levels were increased. 2) The oxidation of exogeneous carbohydrate was remarkable increased 40% , 60%VO_2 max exercise. The other experiment was effects of 60% VO_2 max 20min 3sets exercise on exogeneous carbohydrate metabolism after cane sugar ingestion. Subjects were three non-insulin dependent diabetic patients, aged 48-53 yr. The results were as follows. 1) The decrease of blood glucose and serum insulin levels were remarkable, moreover since after 60 min end of exercise, it was not increased. 2) The oxidation of exogeneous carbohydrate, uring first set 20min exercise was showed 13.4%, during second sets was showed 29.4%, and during third sets was showed 47.7%. These both results were suggested, that optimal exercise prescription for decrease of blood glucose, serum insulin, and for increase of exogeneous carbohydrat oxidation was 60% VO_2max 20 min 3sets exercise.