Effects of mild hypohydration on cooling during cold-water immersion following exertional hyperthermia

European Journal of Applied Physiology
Cory L ButtsBrendon P McDermott

Abstract

We investigated the effects of mild hypohydration compared to euhydration on the cooling efficacy of cold-water immersion (CWI). Fourteen participants (eight male, six female; age 26 ± 5 years; ht 1.77 ± 0.08 m; wt 72.2 ± 8.8 kg; 20.6 ± 7.4 % body fat) completed one euhydrated (EU) trial followed by one hypohydrated trial (HY; via 24 h fluid restriction) in an environmental chamber (33.6 ± 0.9 °C, 55.8 ± 1.7 % RH). Volitional exercise was performed in a manner that matched end-exercise rectal temperature (T re) through repeating exercise mode and intensity. Participants were then immersed in ice water (2.0 ± 0.8 °C) until T re reached 38.1 °C or for a maximum of 15 min. T re, heart rate (HR), skin blood flux (SBF) and mean skin temperature (T sk) were monitored continuously during cooling. Pre-cooling body mass was decreased in the HY trial (-2.66 ± 1.23 % body mass) and maintained in the EU trial (-0.66 ± 0.44 %) compared to baseline mass (P < 0.001). Cooling rates were faster when EU (0.14 ± 0.05 °C/min) compared to HY (0.11 ± 0.05 °C/min, P = 0.046). HR, SBF, and T sk were not different between EU and HY trials (P > 0.05), however, all variables significantly decreased with immersion independent of hydration status (P < 0.00...Continue Reading

References

Aug 1, 1985·Medicine and Science in Sports and Exercise·L E ArmstrongW J Fink
Aug 1, 1993·Journal of Applied Physiology·A GabrielsenP Norsk
Nov 1, 1995·Applied Human Science : Journal of Physiological Anthropology·D MoranY Shapiro
Apr 1, 1997·Journal of Applied Physiology·J González-AlonsoE F Coyle
Nov 24, 1998·The Journal of Physiology·J González-AlonsoB Nielsen
Mar 6, 1999·Journal of Applied Physiology·J González-AlonsoB Nielsen
Feb 9, 2000·American Journal of Physiology. Heart and Circulatory Physiology·J González-AlonsoE F Coyle
Nov 10, 2000·European Journal of Applied Physiology·M J TiptonC M Eglin
Mar 11, 2003·Journal of Applied Physiology·C I ProulxG P Kenny
May 1, 1964·Journal of Applied Physiology·N L RAMANATHAN
Oct 17, 2003·The Journal of Physiology·Nisha CharkoudianMichael J Joyner
Mar 22, 2005·European Journal of Applied Physiology·Clare M Eglin, Michael J Tipton
Apr 14, 2005·The American Journal of Sports Medicine·Sandra Fowkes GodekArthur R Bartolozzi
Dec 13, 2005·European Journal of Applied Physiology·C I ProulxG P Kenny
Jun 14, 2006·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Elizabeth A StoverRobert Wildman
Aug 30, 2006·Sports Medicine·Ian M WilcockWayne A Hing
Jul 11, 2007·Exercise and Sport Sciences Reviews·Douglas J CasaCarl M Maresh
Oct 3, 2007·Medicine and Science in Sports and Exercise·Daniel A JudelsonJeffrey M Anderson
Jun 10, 2008·British Journal of Sports Medicine·J J PeifferP B Laursen
Jan 31, 2009·Journal of Athletic Training·Kristin L OsterbergLindsay B Baker
Jul 2, 2009·Medicine and Science in Sports and Exercise·Bruno B LemireGlen P Kenny
May 19, 2010·International Journal of Sport Nutrition and Exercise Metabolism·Lawrence E ArmstrongCarl M Maresh
Mar 18, 2011·Scandinavian Journal of Medicine & Science in Sports·S A KavourasL S Sidossis
Jun 4, 2011·Scandinavian Journal of Medicine & Science in Sports·Y Epstein, W O Roberts
Feb 4, 2012·European Journal of Applied Physiology·Ilkka HeinonenKari K Kalliokoski
Apr 11, 2012·Journal of Athletic Training·Douglas J CasaKatie M Walsh
Jul 27, 2012·Scandinavian Journal of Medicine & Science in Sports·D GagnonG P Kenny
Jan 1, 2013·Medicine and Science in Sports and Exercise·Lindsay J DistefanoCarl M Maresh
Apr 26, 2013·Journal of Strength and Conditioning Research·Brendon P McDermottCarl M Maresh
Oct 5, 2013·Medicine and Science in Sports and Exercise·Shunsaku KogaDavid C Poole
Nov 16, 2013·Journal of Thermal Biology·Michael J TiptonNigel A S Taylor
Nov 19, 2013·Medicine and Science in Sports and Exercise·Chris MawhinneyWarren Gregson
Feb 12, 2014·Journal of Strength and Conditioning Research·Giannis ArnaoutisLabros S Sidossis
May 3, 2014·Medicine and Science in Sports and Exercise·Brian J FriesenGlen P Kenny
Jul 2, 2014·Medicine and Science in Sports and Exercise·Julie K DemartiniJohn Jardine
Aug 15, 2014·European Journal of Applied Physiology·Andreas D FlourisGlen P Kenny
Dec 3, 2014·Journal of Thermal Biology·Nigel A S TaylorGlen P Kenny
Apr 25, 2015·Medicine and Science in Sports and Exercise·Yang ZhangPhillip A Bishop
Jun 5, 2015·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Mohammed IhsanChris R Abbiss
Sep 19, 2015·Journal of Athletic Training·Douglas J CasaSusan W Yeargin

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