CALCIUM BALANCE DURING HUMAN GROWTH - EVIDENCE FOR THRESHOLD BEHAVIOR
CALCIUM BALANCE DURING HUMAN GROWTH - EVIDENCE FOR THRESHOLD BEHAVIOR
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DOI：
10.1093/ajcn/55.5.992
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发表时间：
1992-05-01
影响因子：
7.1
通讯作者：
HEANEY, RP
中科院分区：
文献类型：
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作者：
MATKOVIC, V;HEANEY, RP
对 519 名从出生到 30 岁的个体进行的钙平衡分析来自 34 份已发表的报告，按年龄组进行汇总，并在摄入范围的两个极端情况下比较每组的摄入量和平衡之间的关系。在所有年龄段，从婴儿期到青年期，平衡值在较高摄入量时趋于平坦并保持恒定，而在较低摄入量时平衡值总是与摄入量高度相关。通过将数据拟合到二元、分割、线性回归模型来估计阈值摄入量和平衡。平衡不再随着摄入量而上升的阈值超过了美国对所有相关年龄组推荐的钙膳食摄入量。
Calcium balances performed on 519 individuals from birth to 30 years of age, derived from 34 published reports, were pooled by age group and the relationship between intake and balance for each group was compared at both extremes of the intake range. At all ages, from infancy through the young adult years, balance values tended to flatten and become constant at higher intakes, while at lower intakes balance was invariably highly correlated with intake. Threshold intakes and balances were estimated by fitting the data to a two-component, split, linear-regression model. The threshold values at which balance no longer rose with intake exceeded the US recommended dietary allowances for calcium for all the age groups concerned.