Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/22892
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles
Peer Review Status: Refereed
Title: A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index
Authors: Maughan, Ronald J
Watson, Phillip
Cordery, Philip A A
Walsh, Neil P
Oliver, Samuel J
Dolci, Alberto
Rodriguez-Sanchez, Nidia
Galloway, S D
Contact Email: s.d.r.galloway@stir.ac.uk
Keywords: fluid balance
dehydration
rehydration
euhydration
electrolytes
macronutrients
gastric emptying
intestinal absorption
renal excretion
urine
Issue Date: Mar-2016
Publisher: American Society for Nutrition
Citation: Maughan RJ, Watson P, Cordery PAA, Walsh NP, Oliver SJ, Dolci A, Rodriguez-Sanchez N & Galloway SD (2016) A randomized trial to assess the potential of different beverages to affect hydration status: development of a beverage hydration index, American Journal of Clinical Nutrition, 103 (3), pp. 717-723.
Abstract: Background: The identification of beverages that promote longer-term fluid retention and maintenance of fluid balance is of real clinical and practical benefit in situations in which free access to fluids is limited or when frequent breaks for urination are not desirable. The postingestion diuretic response is likely to be influenced by several beverage characteristics, including the volume ingested, energy density, electrolyte content, and the presence of diuretic agents.  Objective: This study investigated the effects of 13 different commonly consumed drinks on urine output and fluid balance when ingested in a euhydrated state, with a view to establishing a beverage hydration index (BHI), i.e., the volume of urine produced after drinking expressed relative to a standard treatment (still water) for each beverage.  Design: Each subject (n= 72, euhydrated and fasted male subjects) ingested 1 L still water or 1 of 3 other commercially available beverages over a period of 30 min. Urine output was then collected for the subsequent 4 h. The BHI was corrected for the water content of drinks and was calculated as the amount of water retained at 2 h after ingestion relative to that observed after the ingestion of still water.  Results: Total urine masses (mean ± SD) over 4 h were smaller than the still-water control (1337 ± 330 g) after an oral rehydration solution (ORS) (1038 ± 333 g,P< 0.001), full-fat milk (1052 ± 267 g,P< 0.001), and skimmed milk (1049 ± 334 g,P< 0.001). Cumulative urine output at 4 h after ingestion of cola, diet cola, hot tea, iced tea, coffee, lager, orange juice, sparkling water, and a sports drink were not different from the response to water ingestion. The mean BHI at 2 h was 1.54 ± 0.74 for the ORS, 1.50 ± 0.58 for full-fat milk, and 1.58 ± 0.60 for skimmed milk.  Conclusions: BHI may be a useful measure to identify the short-term hydration potential of different beverages when ingested in a euhydrated state. This trial was registered atwww.isrctn.comasISRCTN13014105.
Type: Journal Article
URI: http://hdl.handle.net/1893/22892
URL: http://ajcn.nutrition.org/content/early/2015/12/23/ajcn.115.114769.short
DOI Link: http://dx.doi.org/10.3945/​ajcn.115.114769
Rights: This is a free access article, distributed under terms (http://www.nutrition.org/publications/guidelines-and-policies/license/) that permit unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited:
Affiliation: Loughborough University
Loughborough University
Loughborough University
Bangor University
Bangor University
Bangor University
University of Stirling
Sport

Files in This Item:
File Description SizeFormat 
Am J Clin Nutr-2016-Maughan-717-23.pdf810.01 kBAdobe PDFView/Open


This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.