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dc.contributor.authorRodriguez-Sanchez, Nidiaen_UK
dc.contributor.authorGalloway, Stuart D. R.en_UK
dc.description.abstractBackground Older adults are susceptible to dehydration and fluid overload due to a reduced ability to maintain homeostatic control of fluid and electrolyte balance. Purpose To assess fluid and electrolyte balance responses in young and older men following ingestion of commonly consumed beverages differing in composition. Methods 12 young and 11 older men were recruited. Euhydrated body mass was recorded. Participants consumed 1L (250 ml every 15 min) of water, fruit juice, a sports drink or low-fat milk in a randomized cross-over design. Urine and blood samples were obtained before and after the drinking period and every hour thereafter for 3-h. Samples were used to determine osmolality, electrolytes (Na+ and K+), water clearance, and glomerular filtration rate. Results Free water clearance was significantly higher in Young than Older at 1 and 2 h after the ingestion of W and S (p<0.05). Net Na+ and K+ balance were not different between Young and Older (p=0.91 and p=0.65) adults, respectively. At 3 h Na+ balance was negative after ingesting water and fruit juice, but neutral after sport drink and milk. Net K+ balance was neutral at 3 h after ingesting milk, but negative after water, fruit juice and sport drink. Conclusions Milk was retained longer than other beverages in Young, but not in Older, despite similar net electrolyte balance responses. Older had higher fluid retention in the first 2 h after the ingestion of all beverages, except for milk when compared to Young, indicating an age-related loss of ability to regulate fluid balance under current study conditions.en_UK
dc.publisherSpringer Science and Business Media LLCen_UK
dc.relationRodriguez-Sanchez N & Galloway SDR (2023) A randomised trial to assess fluid and electrolyte balance responses following ingestion of different beverages in young and older men. <i>European Journal of Applied Physiology</i>.
dc.rightsThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit
dc.subjectMacronutrients: Renal excretionen_UK
dc.titleA randomised trial to assess fluid and electrolyte balance responses following ingestion of different beverages in young and older menen_UK
dc.typeJournal Articleen_UK
dc.citation.jtitleEuropean Journal of Applied Physiologyen_UK
dc.type.statusVoR - Version of Recorden_UK
dc.subject.tagHealthy ageingen_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorRodriguez-Sanchez, Nidia|0000-0003-3960-5704en_UK
local.rioxx.authorGalloway, Stuart D. R.|0000-0002-1622-3044en_UK
local.rioxx.projectInternal Project|University of Stirling|
local.rioxx.filenameA randomised trial to assess fuid and electrolyte balance responses.pdfen_UK
Appears in Collections:Faculty of Health Sciences and Sport Journal Articles

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