EFFECTS OF DIETARY PROTEIN LEVEL ON THE ENERGY METABOLISM OF RATS DURING EXERCISE
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概要
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The experiments were designed to study the effects of exercise of various intensities in albino rats fed diets containing 8per cent or 20per cent casein. Male rats about 7 weeks old were divided into exercise groups and control (non-exercise) groups. The exercise groups were forced to run 57km or 76km in total during a 28-day period. The oxygen uptake of rats was measured in order to study the influence of exercise on energy metabolism of rats and the effects of training. Body weight and food intake were also measured. 1. In all exercise groups the total amount of food intake and body weight gain during the exercise period were smaller than those of the control groups, regardless of the protein levels of the diets. But while the rats were kept at rest after the exercise period, the food intake and body weight of these groups increased and approached those of the control groups. 2. No difference in resting metabolism was observed both in the 8per cent and 20per cent casein groups. At lower speeds up to 1.5km/hr the 8 per cent casein group indicated lower oxygen requirement during the exercise but at speeds higher than 2.0km/hr the oxygen requirement was definitely higher than that of the 20per cent casein group. The estimated optimum speed for rats weighing 300g on the average is some-where between 1.5 and 2.0km/hr if calculated on the basis of oxygen requirement for running 100m. 3. The obvious effects of training on oxygen uptake were seen in the 20per cent casein group after four weeks training, although no effect was found in the 8 per cent casein group.
- 財団法人 学会誌刊行センターの論文
著者
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小石 秀夫
大阪市大 生活科
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小石 秀夫
Department of Food and Nutrition, Faculty of the Science of Living Osaka City University
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辻 幸治
Laboratory of Health and Physical Education, Department of General Education, Osaka Institute of Technology
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片山 吉穂
Department of Food and Nutrition, Faculty of the Science of Living, Osaka City University
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小石 秀夫
Department of Food and Nutrition, Faculty of the Science of Living, Osaka City University
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