Energy expenditure variations in soldiers performing military activities under cold and hot climate conditions

被引:24
作者
Burstein, R
Coward, AW
Askew, WE
Carmel, K
Irving, C
Shpilberg, O
Moran, D
Pikarsky, A
Ginot, G
Sawyer, M
Golan, R
Epstein, Y
机构
[1] Israel Defence Forces Medical Corps, Institute of Military Physiology
[2] Dunn Nutrition Laboratories
关键词
D O I
10.1093/milmed/161.12.750
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
This study assessed the energetic status of soldiers exposed to intense physical activities in cold and warm weather. Thirty subjects participated in a two-phase study: group A (n = 18) in the winter phase and group B (n = 12) in the summer phase. Energy expenditure (EE) was measured by the doubly labeled mater technique; after a single, oral dosing of (H2O)-H-2-O-18, daily urine samples were collected for 12 successive days. Energy intake (EI) was assessed from detailed food records analyzed by computerized food charts. Energy balance was calculated as the difference between EI and EE for each subject Mean (+/-SE) daily EE was 4,281 +/- 170 and 3,937 +/- 159 kcal/day for the winter and summer groups, respectively. Dairy EI was 2,792 +/- 124 kcal/day in group A and almost identical in group B. A negative energy balance of 1,422 +/- 163 kcal/day and 924 +/- 232 kcal/day (not significant) was calculated for groups A and B, respectively. Energy expenditure is primarily determined by the level of activity rather than by climate conditions; EI is insufficient to offset the high energy requirements under these conditions.
引用
收藏
页码:750 / 754
页数:5
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