Validation testing demonstrates efficacy of a 7-day fluid record to estimate daily water intake in adult men and women when compared with total body water turnover measurement

Evan C. Johnson, François Péronnet, Lisa T. Jansen, Catalina Capitan-Jiménez, J. D. Adams, Isabelle Guelinckx, Liliana Jiménez, Andy Mauromoustakos, Stavros A. Kavouras

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Background: Mean daily water intake from fluids (WATER-FL) has proven to be difficult to measure because of a range of nonvalidated data collection techniques. Few questionnaires have been validated to estimate WATER-FL against selfreported diaries or urinary hydration markers, which may limit their objectivity. Objectives: The goals of this investigation were 1) to assess the validity of a 7-d fluid record (7dFLR) tomeasureWATER-FL (WATER-FL-7dFLR) through comparison with WATER-FL as calculated by measuring deuterium oxide (D2O) disappearance (WATER-FL-D2O), and 2) to evaluate the reliability of the 7dFLR in measuring WATER-FL. Methods: Participants [n = 96; 51% female; mean ± SD age: 41 ± 14 y; mean ± SD body mass index (in kg/m2): 26.2 ± 5.1] completed body water turnover analysis over 3 consecutiveweeks. They completed the 7dFLR and food diaries duringweeks 2 and 4 of the observation. The records were entered into nutritional software to determine the water content of all foods and fluids consumed. WATER-FL-D2Owas calculated fromwater turnover (via the D2Odilution method),minus water from food and metabolic water. The agreement between the 2 methods of determining WATER-FL were compared according to a Bland- Altman plot at week 2. The test-retest reliability of 7dFLR between weeks 2 and 4 was assessed via intraclass correlation (ICC). Results: The mean ± SD difference between WATER-FL-7dFLR and WATER-FL-D2Owas 2131 ± 845 mL/d. In addition, no bias was observed (F[1,94]=0.484; R2=0.006; P = 0.488).When comparingWATER-FL-7dFLR fromweeks 2 and 4, no significant difference (mean6 SD difference: 716 75 mL/d; t[79] = 0.954; P = 0.343) and an ICC of 0.85 (95%CI: 0.77, 0.90) was observed. Conclusions: The main findings of this study were that the use of the 7dFLR is an effective and reliable method to estimate WATER-FL in adults. This style of questionnaire may be extremely helpful for collecting water intake data for large-scale epidemiologic studies.

Original languageEnglish (US)
Pages (from-to)2001-2007
Number of pages7
JournalJournal of Nutrition
Volume147
Issue number10
DOIs
StatePublished - Oct 1 2017
Externally publishedYes

Keywords

  • 7-day record
  • Deuterium oxide
  • Diet record
  • Dietary assessment
  • Fluid intake
  • Hydration
  • Liq.in
  • Water
  • Water turnover

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics

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