Document Detail


Determinants of sedentary 24-h energy expenditure: equations for energy prescription and adjustment in a respiratory chamber.
MedLine Citation:
PMID:  24500151     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Achieving energy balance is critical for the interpretation of results obtained in respiratory chambers. However, 24-h energy expenditure (24EE) predictions based on estimated resting metabolic rate and physical activity level are often inaccurate and imprecise.
OBJECTIVE: We aimed to develop and validate equations to better achieve energy balance in a respiratory chamber by adding or subtracting food items.
DESIGN: By using a randomized data set with measures of 24EE (n = 241) performed at the Pennington Biomedical Research Center, we developed equations to predict 24EE from anthropometric, demographic, and body composition variables before and at 3 and 7 h into the chamber measurement. The equations were tested on an independent data set (n = 240) and compared with published predictive equations.
RESULTS: By using anthropometric and demographic variables, the equation was as follows: 24EE (kcal/d) = 11.6 [weight (kg)] + 8.03 [height (cm)] - 3.45 [age (y)] + 217 (male) - 52 (African American) - 235. The mean prediction error was -9 ± 155 kcal/d (2046 ± 305 compared with 2055 ± 343 kcal/d for measured 24EE; P = 0.36). The prediction achieved a precision of ±10% of measured 24EE in 83% of the participants. Energy prescription was then refined by equations with the use of energy expenditure values after 3 h, 7 h, or both into the chamber study. These later equations improved the precision (±10% of measured 24EE) to 92% (P = 0.003) and 96% (P < 0.0001) of the participants at 3 and 7 h, respectively. Body composition did not improve 24EE predictions.
CONCLUSIONS: We showed the use of a set of equations to prescribe and adjust energy intake to achieve energy balance in respiratory chambers over 24 h. These equations may be used in most respiratory chambers and modified to accommodate exercise or specific feeding protocols.
Authors:
Yan Y Lam; Leanne M Redman; Steven R Smith; George A Bray; Frank L Greenway; Darcy Johannsen; Eric Ravussin
Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Validation Studies     Date:  2014-02-05
Journal Detail:
Title:  The American journal of clinical nutrition     Volume:  99     ISSN:  1938-3207     ISO Abbreviation:  Am. J. Clin. Nutr.     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-03-21     Completed Date:  2014-05-22     Revised Date:  2014-06-17    
Medline Journal Info:
Nlm Unique ID:  0376027     Medline TA:  Am J Clin Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  834-42     Citation Subset:  AIM; IM    
Data Bank Information
Bank Name/Acc. No.:
ClinicalTrials.gov/NCT00099151;  NCT00493701;  NCT00565149;  NCT00829140;  NCT00936130;  NCT00943215;  NCT00945633;  NCT01275235;  NCT01672632;  NCT01775163;  NCT01898949
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
African Americans
Basal Metabolism
Body Composition
Body Mass Index
Energy Intake* / ethnology
Energy Metabolism*
European Continental Ancestry Group
Feasibility Studies
Female
Humans
Louisiana
Male
Middle Aged
Models, Biological*
Nutrition Assessment*
Nutritional Requirements* / ethnology
Overweight / ethnology,  metabolism
Sedentary Lifestyle
Young Adult
Grant Support
ID/Acronym/Agency:
P30 DK072476/DK/NIDDK NIH HHS; P30DK072476/DK/NIDDK NIH HHS; R01 AG030226/AG/NIA NIH HHS; R01 DK060412/DK/NIDDK NIH HHS; R01 DK60412/DK/NIDDK NIH HHS; U01 AG022132/AG/NIA NIH HHS; U01 AG20478/AG/NIA NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Neurodevelopment, nutrition, and growth until 12 mo of age in infants fed a low-energy, low-protein ...
Next Document:  Plasma and breast-milk selenium in HIV-infected Malawian mothers are positively associated with infa...