Accession Number : ADA289834
Title : Energy Balance In Military Recruits Performing Intense Physical Efforts Under Extreme Climate Conditions.
Descriptive Note : Final rept.,
Corporate Author : HELLER INST OF MEDICAL RESEARCH TEL HASHOMER (ISRAEL)
Personal Author(s) : Burstein, Ruth ; Askew, W. ; Coward, A. ; Irving, C. ; Moran, D.
PDF Url : ADA289834
Report Date : 13 NOV 1994
Pagination or Media Count : 33
Abstract : We assessed the energetic status of soldiers exposed to intense physical activities in cold and warm weather. Thirty subjects performing routine field maneuvers participated in a two phase study: group A (n=18) in the winter phase and group (n:12) in the summer. Energy expenditure (EE) was measured by the doubly-labeled water (DLW) technique; after a single, oral dosing of deuterium oxygen-15, daily urine sample were collected for 12 successive days. Energy intake (El) was assessed from detailed food records filled up at 'real-time' and analyzed by computerize food charts. Energy balance (EB) was calculated as the difference between El and EE for each subject. Mean (*SE) daily EE was 4281*17O and 3937*159 kcal/day for the winter and summer groups, respectively. Mean daily El was 2792*124 kcal/day in group A and similar in group B. A negative energy balance of 1422*163 kcal/day and 924*23 kcal/day (N.S) was calculated for group A and B, respectively. We concluded that the total energy expenditure is primarily determined by the level of activity rather than by environmental conditions. Energy intake, unaffected by climate conditions, is insufficient to offset the high energy requirements under these conditions, thus, leading to a negative energy balance in these troops.
Descriptors : *MILITARY OPERATIONS, *CLIMATE, *MANEUVERS, ISRAEL, MILITARY PERSONNEL, WEATHER, ARMY PERSONNEL, PHYSICAL PROPERTIES, ENERGY, INTENSITY, HIGH ENERGY, WINTER, BALANCE, CHARTS, MEAN, RECORDS, COLD WEATHER, ENERGETIC PROPERTIES, FOOD, RECRUITS, ENERGY CONSUMPTION, DAILY OCCURRENCE, FIELD CONDITIONS, SUMMER, URINE, COLD TOLERANCE.
Subject Categories : Military Operations, Strategy and Tactics
Humanities and History
Distribution Statement : APPROVED FOR PUBLIC RELEASE