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タイトル: 最大及び最大下作業中の非鍛練者と鍛練者の生理的反応の相違(II) : 循環機能について
その他のタイトル: The Physiological Responses to Maximal and Submaximal Work on Non-athletes and Athletes (II) : with special reference to circulatory functions
著者: 山地, 啓司
著者(別言語): Yamaji, Keiji
発行日: 1974年3月30日
出版者: 東京大学教育学部
掲載誌情報: 東京大学教育学部紀要. 13巻, 1974.3, p.253-259
抄録: It has been suggested that cardiac output is an important factor in oxygen transport system to determine the magnitude of oxygen uptake. Cardiac output occupies a central position in the discussion of oxygen transport from the lungs to the tissues in exercise. This study was conducted to determine max V^^・_<O_2> cardiac output (Q^^・), stroke volume (SV), heart rate (HR) and arterio-venous oxygen differences (AV^^-O_2D) during submaximal and maximal work on non-athletes and athletes. Cardiac output was measured by CO_2 method. The subjects were 10 ordinary healthy males (aged 23〜29 years), and 6 trained middle-and long-distance runners (aged 20〜25 years). The following results were obtained. 1) At submaximal work, athletes showed greater Q^^・ and SV than those in non-athletes at the same level of V^^・_<O_2>. AV^^-O_2D for athletes were smaller than that for non-athletes. 2) At maximal work, athletes had significantry greater maxV^^・_<O_2> max Q^^・ and max SV than those in non-athletes. In previous study (20), it was found that athletes had lower values for V^^・_E, V_T and RR than those for non-athletes at the same work intensity. While, in turn D_<Lco> was larger on athletes. Namely, athletes had higher qualitive capacity of respiratory function on lung level. From those data on this report, it would be said that athletes had greater quantitative capacity (Q^^・, SV) for oxygen transport both during submaximal and maximal work than those of non-athletes.
URI: http://hdl.handle.net/2261/310
ISSN: 04957849


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