Energy requirements assessed using the doubly-labelled water method
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چکیده
منابع مشابه
Energy requirements assessed using the doubly-labelled water method.
Energy requirements of animals and man were originally determined in intake–balance studies, measuring the energy intake to maintain energy balance. Nowadays energy requirements are preferably determined by measuring energy expenditure. During growth, energy expenditure is combined with a figure for energy deposition. The reasons for the switch from intake to expenditure measurements are twofol...
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RATIONALE The doubly labelled water (DLW) method is the reference method for the estimation of free-living total energy expenditure (TEE). In this method, where both 2 H and 18 O are employed, different approaches have been adopted to deal with the non-conformity observed regarding the distribution space for the labels being non-coincident with total body water. However, the method adopted can ...
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The doubly-labelled-water method is now being regularly exploited to measure energy expenditure in human studies. Initial differences of opinion relating to the fine details of the methodology have to a large extent been resolved, and we have arrived at a stage where it is likely that researchers unschooled in mass spectrometry and the use of stable isotopes may wish to apply the method to prob...
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In the 1980s the development of the doubly labelled water (DLW) technique made it possible to determine the validity of dietary assessment methods using external, independent markers of intake in free-living populations. Since then, the accuracy of self-reported energy intake (EI) has been questioned on a number of occasions as under-reporting has been found to be prevalent in many different po...
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Free-living energy expenditure was estimated by doubly-labelled water (DLW) and continuous heart-rate (HR) monitoring over nine consecutive days in nine healthy men with sedentary occupations but different levels of leisure-time physical activity. Individual calibrations of the HR-energy expenditure (EE) relationship were obtained for each subject using 30 min average values of HR and EE obtain...
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ژورنال
عنوان ژورنال: British Journal of Nutrition
سال: 1998
ISSN: 0007-1145,1475-2662
DOI: 10.1017/s0007114598001251