给予两种膳食能量摄入水平时智利年轻男性的 obligatory 尿氮和粪氮损失。注：“obligatory”在这里可能需要结合上下文来准确理解其含义，比如可理解为“必需的”“ obligatory nitrogen losses”可译为“必要氮损失” ，由于要求不添加解释，故保留英文。

Obligatory urinary and faecal nitrogen losses in young Chilean men given two levels of dietary energy intake.

Uauy R, Yáñez E, Ballester D, Barrera G, Guzmán E, Saitúa M T, Zacarías I

Br J Nutr. 1982 Jan;47(1):11-20. doi: 10.1079/bjn19820004.

Abstract

The obligatory nitrogen losses were measured in young adult males of the low socio-economic group, consuming an N-free diet at 192 kJ (46 kcal)/kg per d from day 1 to 10 and 243 kJ (58 kcal)/kg per d from day 11 to 18. 2. All subjects, except one, lost weight compatible with N loss. 3. A kinetic evaluation of the results showed that the asymptotically derived urinary N loss after stability had been reached was 35.8 mg N/kg per d. The mean time to stability was 6.5 d. The subjects showed a trend toward decline in N loss while consuming the high-energy N-free diet. 4. The obligatory faecal N loss for days 1-10 was 16.1 mg N/kg per d and 8 mg N/kg per d for days 11-18. 5. Based on the factorial approach the total obligatory N loss of our subjects, for the initial 10 d, was 57.5 mg N/kg per d.

摘要

对社会经济地位较低的年轻成年男性进行了 obligatory 氮损失测量，他们从第1天到第10天以每天每千克192千焦（46千卡）的无氮饮食进食，从第11天到第18天以每天每千克243千焦（58千卡）的无氮饮食进食。2. 除一人外，所有受试者的体重减轻都与氮损失相符。3. 对结果进行的动力学评估表明，达到稳定状态后渐近得出的尿氮损失为每天每千克35.8毫克氮。达到稳定状态的平均时间为6.5天。受试者在食用高能量无氮饮食时氮损失呈下降趋势。4. 第1 - 10天的 obligatory 粪便氮损失为每天每千克16.1毫克氮，第11 - 18天为每天每千克8毫克氮。5. 根据析因法，我们的受试者在最初10天的总 obligatory 氮损失为每天每千克57.5毫克氮。