FIELD USE OF D218O TO MEASURE ENERGY-EXPENDITURE OF SOLDIERS AT DIFFERENT ENERGY INTAKES
FIELD USE OF D218O TO MEASURE ENERGY-EXPENDITURE OF SOLDIERS AT DIFFERENT ENERGY INTAKES
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DOI：
10.1152/jappl.1989.67.5.1922
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发表时间：
1989-11-01
影响因子：
3.3
通讯作者：
SHARP, MA
中科院分区：
文献类型：
--
作者：
DELANY, JP;SCHOELLER, DA;SHARP, MA
为了测试双标记水在恶劣野外条件下的应用，在为期28天的野外训练演习中测量了16名特种作战士兵的能量消耗。受试者通过无脂肪质量进行匹配，并在随意即食餐饮食和2，000千卡/天的轻质口粮之间平分。受试者每天记录摄入量，并在运动前后测量身体成分。在研究开始时，受试者搬到一个新的北方位置，因此，一个新的供水。为了弥补这一点，一组没有接受重水的士兵被跟踪测量同位素基线变化。双标记水的能量消耗与摄入/平衡一致（3，400 ± 0.001）。260对3,230。520千卡/天）。双标记水的能量消耗的总体变异系数是摄入量/平衡的一半（7.6对16.1%）。双标记水重复测定的变异系数为7.3%。即食餐组的能量消耗，3，540 ±。180千卡/天，与低体重日粮组3，330 ± 1，000千卡/天无显著差异。301千卡/天。双标记水在田间条件下有效。
To test the application of doubly labeled water under adverse field conditions, energy expenditures of 16 special operations soldiers were measured during a 28-day field training exercise. Subjects were matched by fat-free mass and divided equally between an ad libitum ready-to-eat meal diet and a 2,000 kcal/day lightweight ration. Subjects recorded intakes daily, and body composition was measured before and after the exercise. At the beginning of the study, subjects moved to a new northerly location and, therefore, a new water supply. To compensate for this, a group of soldiers who did not receive heavy water was followed to measure isotopic base-line changes. Energy expenditure by doubly labeled water was in agreement with intake/balance (3,400 .+-. 260 vs. 3,230 .+-. 520 kcal/day). The overall coefficient of variation of energy expenditure by doubly labeled water was half that of intake/balance (7.6 vs. 16.1%). The coefficient of variation of repeat measures with doubly labeled water was 7.3%. Energy expenditure of the ready-to-eat meal group, 3,540 .+-. 180 kcal/day, was not significantly different from the light-weight ration group, 3,330 .+-. 301 kcal/day. Doubly labeled water was valid under field conditions.