韓國人의 칼슘代謝에 對한 硏究 = A Study on Calcium Metabolism in Korean

다국어 초록 (Multilingual Abstract)

Nutritional value of calcium in food is affected by various factors such as quality and quantity of protein, amounts of calcium, other mineral, vitamins, and fiber. Among them, the level of protein in diet and calcium intake are known to be the most important factors.
The present study was undertaken to determine the effect of different levels of protein and calcium intake on urinary and fecal calcium excretion, calcium balance of the body and calcium absorption.
Six healthy adult female college students participated in this metabolic study for 20 days. The subjects ranged in age from 20 to 25 years, in height from 155.1 ㎝ to 159.3 ㎝ and in weight from 46 Kg to 61 Kg. They were eaten four kinds of Korean mixed diets with protein levels of 24.0g, 32.1g, 40.1g and 48.2g supplied consecutively, each being maintained for every 5 days, and calcium contents of which were 276.6㎎, 452.5㎎, 532.0㎎, and 634.9㎎ respectively. They had no shown metabolic disorders, and hematological and urinalysis were all within normal ranges.
Results obtained from the present experiment are illustrated as follows:
1. The calcium contents ingested from diets were 276.6㎎, 452.5㎎, 532.0㎎, and 634.9㎎ per day respectively, and each was supplied with protein of 24.0g, 32.1g, 40.1g, and 48.2g daily.
2. The average amount of calcium excreted in the urine were 87.8㎎, 101.1㎎, 134.9㎎, and 160.8㎎ per day.
3. The average amount of calcium excreted in the feces were 166.5㎎, 268.2㎎, 305.2㎎ and 350.7㎎ per day.
4. The mean daily calcium balance were 7.4㎎, 60.7㎎, 76.9㎎, and 94.6㎎ each.
5. The calcium absorption rate of subjects were 39.3%, 40.5%, 42.5%, 44.6% and the average was 41.2 ± 3.2%.
Therefore when the amount of calcium intake increased, calcium absorption and calcium retention of the body tend to increase.