The hydration ability of three commercially available sports drinks and water

Hill, R.J., Bluck, L.J.C. and Davies, P.S.W. (2008) The hydration ability of three commercially available sports drinks and water. Journal of Science and Medicine in Sport, 11 2: 116-123. doi:10.1016/j.jsams.2006.12.117


Author Hill, R.J.
Bluck, L.J.C.
Davies, P.S.W.
Title The hydration ability of three commercially available sports drinks and water
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1440-2440
Publication date 2008-04-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jsams.2006.12.117
Open Access Status Not Open Access
Volume 11
Issue 2
Start page 116
End page 123
Total pages 8
Editor C. Finch
D. Bentley
D. Bishop
T. Cable
M.C.A. Paw
M. Vanpopple
P.Terry
Place of publication Australia
Publisher Elsevier Ltd
Language eng
Subject C1
111101 Clinical and Sports Nutrition
920411 Nutrition
Abstract This paper compares the hydration ability of three commercially-available sports drinks with water under conditions of rest and exercise, using a deuterium dilution technique. For the rest group, 0.05g/kg of body weight of deuterium, contained in gelatine capsules, was ingested with one of the test solutions and saliva samples were collected every five minutes for an hour while the subject remained seated. The deuterium was administered as above for the exercise group but sample collection was during one hour of exercise on a treadmill at 55% of the subject's maximum heart rate. The enrichment data for each subject were mathematically modelled to describe the kinetics of hydration and the parameters obtained were compared across drinks using a basic Anova. At rest, significant differences were found for t(1), t(1/2), and the percent of drink absorbed at t(1). The differences between drinks were not significant for t(2) or the maximum absorption rate. For the exercise group, the only significant difference was found between water and the sports drinks at t(1). Therefore, we conclude that labelling with a deuterium tracer is a good measure of the relative rate ingested fluids are absorbed by the body. Because of the lack of differences found at t(2), which is indicative of the 100% absorption time, both at rest and during exercise, it may be speculated that, compared to water, the sports drinks studied in this paper did not hydrate the body at a faster rate.
Keyword Isotope labelling, stable
Dueterium
Mathamatical
modelling
Absorption
Exercise
Rest
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID MC_U105960396
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Medicine Publications
 
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