Ziegler E E, O'Donnell A M, Stearns G, Nelson S E, Burmeister L F, Fomon S J
Am J Clin Nutr. 1977 Jun;30(6):939-46. doi: 10.1093/ajcn/30.6.939.
A total of 1148 nitrogen balance studies were conducted in 100 boys and 23 girls 1 to 11 years old. Mixed, customary diets supplied between 8.9 and 21.4% of calories from protein. Duration of balance studies ranged from 72 hr in the youngest subjects to 120 hr in older children. Regressions and 95% confidence intervals of nitrogen retention on nitrogen intake are presented. The slope of the regression was significantly greater for children 12 to 18 months old than for children of other age groups. Correlation coefficients between various parameters of nitrogen balance and energy intake are presented. Although variability in results of nitrogen balances within subjects appears to be rather large, a significant difference between subjects was observed.
对100名1至11岁的男孩和23名女孩进行了总共1148项氮平衡研究。混合的日常饮食提供的热量中，蛋白质占8.9%至21.4%。平衡研究的持续时间从最年幼受试者的72小时到年龄较大儿童的120小时不等。给出了氮潴留量与氮摄入量的回归方程及95%置信区间。12至18个月大儿童的回归斜率明显大于其他年龄组的儿童。给出了氮平衡各参数与能量摄入量之间的相关系数。尽管受试者体内氮平衡结果的变异性似乎相当大，但受试者之间仍观察到显著差异。
