scholarly journals Cavity ring‐down spectrometer for total energy expenditure using doubly‐labeled water

2010 ◽  
Vol 24 (S1) ◽  
Author(s):  
Bruce A. Richman ◽  
Dale A. Schoeller ◽  
Tom Thorsen ◽  
Tim Shriver ◽  
Eric R. Crosson
1990 ◽  
Vol 259 (4) ◽  
pp. E576-E585 ◽  
Author(s):  
M. I. Goran ◽  
E. J. Peters ◽  
D. N. Herndon ◽  
R. R. Wolfe

Total energy expenditure (TEE) was measured in 15 burned children with the doubly labeled water technique. Application of the technique in burned children required evaluation of potential errors resulting from nutritional intake altering background enrichments during studies and from the high rate of water turnover relative to CO2 production. Five studies were discarded because of these potential problems. TEE was 1.33 +/- 0.27 times predicted basal energy expenditure (BEE), and in studies where resting energy expenditure (REE) was simultaneously measured, TEE was 1.18 +/- 0.17 times REE, which in turn was 1.16 +/- 0.10 times predicted BEE. TEE was significantly correlated with measured REE (r2 = 0.92) but not with predicted BEE. These studies substantiate the advantage of measuring REE to predict TEE in severely burned patients as opposed to relying on standardized equations. Therefore we recommend that optimal nutritional support will be achieved in convalescent burned children by multiplying REE by an activity factor of 1.2.


2002 ◽  
Vol 23 (3_suppl1) ◽  
pp. 76-81 ◽  
Author(s):  
Manuel Hernández-Triana ◽  
Gabriela Salazar ◽  
Erik Díaz ◽  
Vivian Sánchez ◽  
Beatriz Basabe ◽  
...  

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1175-1175
Author(s):  
Megan McCrory ◽  
Hannah Bernard ◽  
Owen Maroney ◽  
Rashmi Sharma ◽  
Susan Roberts

Abstract Objectives The doubly labeled water (DLW) method is the gold standard for assessing total energy expenditure (TEE), but is costly. Questionnaires and prediction equations for TEE are nearly cost-free but research on their validity is scarce. We evaluated the validity of TEE assessed by two questionnaires and two prediction equations in comparison with TEE assessed by DLW. Based on previous work, we hypothesized that the questionnaires would be valid at a group level, and that the prediction equations would be valid at an individual level. Methods Data from a 10-d observational study in 124 healthy, nonsmoking adults were used (63% F, aged 29.8 ± 12.2 y, BMI 24.5 ± 3.9 kg/m2 (Mean ± SD)). TEE was measured by DLW using a mixed oral 2H218O dose containing 0.15 g 2H218O and 0.07 g of 2H2O per kg body weight. Analysis of urine samples and calculations of TEE were carried out using standard methodology. TEE was estimated from the 7-day Physical Activity Recall (7dPAR; Sallis et al. 1985), the Block Work and Home Survey (BWHS; Block et al. 2009), Dietary Reference Intakes (DRI) equations for estimated energy requirements of adults with normal weight or overweight/obesity (IOM 2005), and the BOD POD air displacement plethysmograph. 7dPAR TEE was estimated by multiplying MET-min/day with resting metabolic rate estimated from DRI basal energy expenditure equations. The BOD POD measured body composition by densitometry and TEE was estimated from fat-free mass and fat mass (Nelson et al. 1992) and an activity factor (WHO 1985). Results TEE values were 2430 ± 535 (DLW), 2375 ± 445 (7dPAR), 2407 ± 750 (BWHS), 2335 ± 388 (DRI), 2134 ± 439 (BOD POD) kcal/d (Mean ± SD), with DRI and BOD POD significantly lower than DLW (P <0.01). Mean ± 2SD limits of agreement (kcal/d) between DLW and 7dPAR (−766, 877) and BWHS (−1420, 1468) were wider than those between DLW and DRI (−630, 822) and BOD POD (−463, 1057). The R2 and SEE of the method associations with DLW ranged from 0.17 to 0.54 and 264 to 688 kcal/d, respectively (all P = 0.000). Conclusions The 7dPAR and BWHS were valid for estimating TEE at a group level. While the DRI and BOD POD equations were more accurate at estimating TEE of individuals, none of the tools are recommended for individual assessment of TEE due to their low R2 and wide Bland-Altman limits of agreement with DLW. Funding Sources NIH R01 DK075862 and Purdue University.


1997 ◽  
Vol 97 (9) ◽  
pp. 966-970 ◽  
Author(s):  
RACHEL K JOHNSON ◽  
HEIDI G HILDRETH ◽  
STEPHEN H CONTOMPASIS ◽  
MICHAEL L GORAN

2017 ◽  
Vol 14 (1) ◽  
Author(s):  
Keisuke Komura ◽  
Satoshi Nakae ◽  
Kazufumi Hirakawa ◽  
Naoyuki Ebine ◽  
Kazuhiro Suzuki ◽  
...  

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