JMSSJ On-line

JMSSJ On-line, Vol. 47 (1999) No. 5, pp. 315-317

Measurement Method of Carbohydrate Metabolism during Prolonged Exercise by Monitoring ¹³CO₂ as Tracer		>> Full Text PDF >> References
*Jun FUTAMI^a), Isao NISHI^b), and Yoshio EN^c)** ^a) Department of Economic Informatics, Faculty of Economics, Higashi Nippon International University (37 Suganezawa, Kamata, Taira, Iwaki-city, Fukushima 970-8567, Japan)* ^b) Department of Electronics and Computer, Faculty of Science and Engineering, Science University of Tokyo in Yamaguchi (1-1-1 Daigakudori, Onoda-city, Yamaguchi 756-0884, Japan) ^c) Institute of Exercise Physiology, Nippon Sport Science University (7-1-1 Fukasawa, Setagaya-ku, Tokyo 158-8508, Japan)

The discriminative measurement method of the dynamic metabolic change of an administered glucose and a pre-reserved carbohydrate is clearly demonstrated during the prolonged exercise (75 W bicycle ergometer work). The administered glucose is an ordinary commercial available medical use. The isotopic abundance difference ratio of the glucose is as high as 20‰ comparing to that of the expired CO₂ before the administration. This paper proposed the discriminative measurement method and showed a trail measurement for inspecting the method.

Key words: Energy metabolism, ¹³CO₂ isotopic tracing, Respiratory gas analysis