たんぱく質の摂取量には上限がある

書誌事項

タイトル別名
  • Upper limit of protein uptake for Japanese male adults.

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説明

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In 1943, Miura worked on the nutritional study of Japanese navy sailors. From these old data., we picked up the daily requirement of protein from food, especially nitrogen balances. A middle age sailor (34 years old, weighing 60.5kg) showed the nitrogen equilibrium of 77g per day. Two other sailors (20 years and 15 years old) showed positive nitrogen balance; thus we could not get nitrogen balance data. As a simple calculation of nitrogen balance from body weight, there are two methods: The old one is 1.2g × body weight (kg). If we applied the old one the nitrogen balance of the sailor is 73g. As the present Japanese adult has ca. 70kg of body weight more than 100g of food protein might not be absorbed from the intestine.

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