alexa Evaluation of doubly labeled water for measuring energy expenditure during changing nutrition.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Obesity & Weight Loss Therapy

Author(s): Jones PJ, Winthrop AL, Schoeller DA, Filler RM, Swyer PR,

Abstract Share this page

Abstract Change in abundance of 2H and 18O in dietary water during a doubly labeled water energy period may introduce error into the calculated carbon dioxide production rate (RCO2). To examine the accuracy of 2H2(18)O during changing nutritional regimens, we compared 2H2(18)O and periodic open-circuit respiratory gas exchange (RGE) in postsurgical infants who were changing from parenteral to alternative parenteral and/or oral nutrition. The two methods were compared before and after correction for shifts in isotopic abundance of the infant water pools during the energy-expenditure period. Baseline corrections were predicted using the difference between abundances of the initial body water and final nutrient solutions. Before isotopic correction, 2H2(18)O underestimated RCO2 in eight subjects by 11.8 +/- 20.1\% (mean +/- SD). After correction, agreement between the two methods improved; the underestimate was then -8.7 +/- 12.9\%. To obtain maximum precision of 2H2(18)O, subjects should be maintained on the same nutritional regimen before and during the study unless valid correction formulae are used.
This article was published in Am J Clin Nutr and referenced in Journal of Obesity & Weight Loss Therapy

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 13th World Congress on Obesity
    Aug 24-25, 2017, Toronto, Canada
  • 13th Euro Obesity and Endocrinology Congress
    Sep 21-23, 2017, Madrid, Spain

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords