Skip to main content
main-content

12.08.2016 | Original Contribution | Ausgabe 6/2017 Open Access

European Journal of Nutrition 6/2017

Relationships between hydration biomarkers and total fluid intake in pregnant and lactating women

Zeitschrift:
European Journal of Nutrition > Ausgabe 6/2017
Autoren:
Amy L. McKenzie, Erica T. Perrier, Isabelle Guelinckx, Stavros A. Kavouras, Giselle Aerni, Elaine C. Lee, Jeff S. Volek, Carl M. Maresh, Lawrence E. Armstrong

Abstract

Introduction

Previous research established significant relationships between total fluid intake (TFI) and urinary biomarkers of the hydration process in free-living males and females; however, the nature of this relationship is not known for pregnant (PREG) and lactating (LACT) women.

Purpose

To determine the relationship between urinary and hematological hydration biomarkers with TFI in PREG and LACT.

Methods

Eighteen PREG/LACT (age: 31 ± 3 years, pre-pregnancy BMI: 24.26 ± 5.85 kg m−2) collected 24-h urine samples, recorded TFI, and provided a blood sample at 5 time points (15 ± 2, 26 ± 1, 37 ± 1 weeks gestation, 3 ± 1 and 9 ± 1 weeks postpartum during lactation); 18 pair-matched non-pregnant (NP), non-lactating (NL) women (age: 29 ± 4 years, BMI: 24.1 ± 3.7 kg m−2) provided samples at similar time intervals. Twenty-four-hour urine volume (UVOL), osmolality (UOSM), specific gravity (USG), and color (UCOL) were measured. Hematocrit, serum osmolality (SOSM), and serum total protein (STP) were measured in blood.

Results

Significant relationships were present between TFI and urinary biomarkers in all women (P < 0.004); these relationships were not different between PREG and NP, and LACT and NL, except UVOL in PREG (P = 0.0017). No significant relationships between TFI and hematological biomarkers existed (P > 0.05).

Conclusion

Urinary biomarkers of hydration, but not hematological biomarkers, have a strong relationship with TFI in PREG, LACT, NP, and NL women. These data suggest that urinary biomarkers of hydration reflect TFI during pregnancy and breast-feeding.

Unsere Produktempfehlungen

Neuer Inhalt

e.Med Interdisziplinär

Kombi-Abonnement

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Bis zum 22.10. bestellen und 100 € sparen!

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 6/2017

European Journal of Nutrition 6/2017Zur Ausgabe