Inter- and intraindividual correlations of background abundances of 2H, 18O and 17O in human urine and implications for DLW measurements

The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This experiment examined the behavior of natural background isotope abundance fluctuations within and between individuals over time to assess possible methods of accounting for variations in the background isotope abundances to potentially improve the precision of the DLW measurement.In this work, we measured natural...