Calcium Requirement and Adaptation in Adult Men

作者：K. Heinkel, H. Breining, H. Kinzlmeier, F. Wolf, N. Henning, J. Kleeberg, H. Berning, H. Götze · 发表于：Gastroenterologia · 年份：2009 · DOI：10.1159/000202958 · 被引用次数：97 · 研究领域：Vitamin C and Antioxidants Research

Calcium Requirem ent and Adaptation in Adult MenThe needs of the hum an body for calcium have been investigated frequently by balance studies in which the minimum requirem ents to maintain calcium equilibrium have been assessed, for which widely varying estimates have been given.These have varied between 200 and 1000 mg.daily as an average, but have not always taken into account the influence of old age and osteoporosis.Ole ./. Malm* has recently published a detailed research into this problem and reviewed critically previous reports dating back to 1905.He describes his m ethod of selecting his experim ental subjects, and the two types of diet which he employed.The subjects chosen were long-term convicts and t lie two diets used contained exactly 950 and 450 mg.calcium daily.Fourteen day metabolic periods were studied and exact balances of calcium intake and output were measured.W ith certain reservations, the author concludes that there was no statistically significant difference in regard to absorption efficiency and calcium retention in men below and above age 50.Osteoporosis in old age has probably several unrelated causes, hut one of these factors which has been little recognized, and is shown in these studies, is the influence of physical exercise on the ability to store calcium in old age.l'he prevention of old age demineralization may, as Dr. Malm states, prove to he a question not only of adequate nutrition, but also of healthy degrees of exercise.A better balance al...