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The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity

Jenny Peel, Melitta McNarry Orcid Logo, Shane Heffernan Orcid Logo, Venturino R. Nevola, Liam Kilduff Orcid Logo, Kathryn Coates, Ed Dudley, Mark Waldron Orcid Logo

European Journal of Applied Physiology

Swansea University Authors: Jenny Peel, Melitta McNarry Orcid Logo, Shane Heffernan Orcid Logo, Liam Kilduff Orcid Logo, Kathryn Coates, Ed Dudley, Mark Waldron Orcid Logo

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DOI (Published version): 10.1007/s00421-024-05478-3

Abstract

Purpose To determine the effect of taurine supplementation on sweating and core temperature responses, including the transition from compensable to uncompensable heat stress, during prolonged low-intensity exercise of a fixed-heat production (~200W/m2) in hot conditions (37.5°C), at both fixed and i...

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Published in: European Journal of Applied Physiology
ISSN: 1439-6319 1439-6327
Published: Springer Science and Business Media LLC 2024
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URI: https://cronfa.swan.ac.uk/Record/cronfa65883
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Participants were assessed for whole-body sweat loss (WBSL), local sweat rate (LSR), sweat gland activation (SGA), core temperature (Tcore), breakpoint of compensability (Pcrit) and calorimetric heat transfer components. Plasma volume and plasma taurine concentrations were established through pre- and post-trial blood samples.Results Taurine supplementation increased WBSL by 26.6% and 5.1% (p=0.035), LSR by 15.5% and 7.8% (p=0.013), SGA (1x1cm) by 32.2% and 29.9% (p&lt;0.001) and SGA (3x3cm) by 22.1% and 17.1% (p=0.015) during the fixed- and ramped-humidity exercise periods, respectively. Evaporative heat loss was enhanced by 27% (p=0.010), heat-storage reduced by 72% (p=0.024) and Pcrit was greater in taurine vs placebo (25.0mmHg vs 21.7mmHg; p=0.002).Conclusion Taurine supplementation increased sweating responses during fixed Ḣprod in hot conditions, prior to substantial heat strain and before the breakpoint of compensability, demonstrating improved thermoregulatory capacity. The enhanced evaporative cooling and reduced heat-storage delayed the subsequent upward inflection in Tcore –represented by a greater Pcrit– and offers a potential dietary supplementation strategy to support thermoregulation.</abstract><type>Journal Article</type><journal>European Journal of Applied Physiology</journal><volume>0</volume><journalNumber/><paginationStart/><paginationEnd/><publisher>Springer Science and Business Media LLC</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1439-6319</issnPrint><issnElectronic>1439-6327</issnElectronic><keywords>Taurine, sweating, heat, uncompensability, evaporative cooling, thermoregulation</keywords><publishedDay>6</publishedDay><publishedMonth>4</publishedMonth><publishedYear>2024</publishedYear><publishedDate>2024-04-06</publishedDate><doi>10.1007/s00421-024-05478-3</doi><url/><notes/><college>COLLEGE NANME</college><department>Science and Engineering - Faculty</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>FGSEN</DepartmentCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders>Swansea University</funders><projectreference/><lastEdited>2024-04-17T14:16:19.6333790</lastEdited><Created>2024-03-22T14:09:49.2475731</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Sport and Exercise Sciences</level></path><authors><author><firstname>Jenny</firstname><surname>Peel</surname><order>1</order></author><author><firstname>Melitta</firstname><surname>McNarry</surname><orcid>0000-0003-0813-7477</orcid><order>2</order></author><author><firstname>Shane</firstname><surname>Heffernan</surname><orcid>0000-0002-3297-9335</orcid><order>3</order></author><author><firstname>Venturino R.</firstname><surname>Nevola</surname><order>4</order></author><author><firstname>Liam</firstname><surname>Kilduff</surname><orcid>0000-0001-9449-2293</orcid><order>5</order></author><author><firstname>Kathryn</firstname><surname>Coates</surname><order>6</order></author><author><firstname>Ed</firstname><surname>Dudley</surname><order>7</order></author><author><firstname>Mark</firstname><surname>Waldron</surname><orcid>0000-0002-2720-4615</orcid><order>8</order></author></authors><documents><document><filename>65883__30045__554e948e06854f99a0fd70ee6b8c57aa.pdf</filename><originalFilename>65883.VoR.pdf</originalFilename><uploaded>2024-04-17T14:14:29.4707482</uploaded><type>Output</type><contentLength>1392450</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>© The Author(s) 2024. 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spelling v2 65883 2024-03-22 The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity 86316fdeb6b4ee7ce0206f789eec781c Jenny Peel Jenny Peel true false 062f5697ff59f004bc8c713955988398 0000-0003-0813-7477 Melitta McNarry Melitta McNarry true false 72c0b36891dfbec0378c0d0f7916e807 0000-0002-3297-9335 Shane Heffernan Shane Heffernan true false 972ed9a1dda7a0de20581a0f8350be98 0000-0001-9449-2293 Liam Kilduff Liam Kilduff true false c98a9f7646a8c9360de034071d3992de Kathryn Coates Kathryn Coates true false c7d05f992a817cd3b9a5f946bd909b71 Ed Dudley Ed Dudley true false 70db7c6c54d46f5e70b39e5ae0a056fa 0000-0002-2720-4615 Mark Waldron Mark Waldron true false 2024-03-22 FGSEN Purpose To determine the effect of taurine supplementation on sweating and core temperature responses, including the transition from compensable to uncompensable heat stress, during prolonged low-intensity exercise of a fixed-heat production (~200W/m2) in hot conditions (37.5°C), at both fixed and incremental vapour-pressure.Methods Fifteen females (n=3) and males (n=12; 27±5years, 78±9kg, ̇O2max 50.3±7.8mL/kg/min), completed a treadmill walking protocol (~200W/m2 heat production [Ḣprod]) in the heat (37.5±0.1°C) at fixed- (16mmHg) and ramped-humidity (Δ1.5mmHg/5-min) following one week of oral taurine supplementation (50mg/kg/bm) or placebo, in a double-blind, randomised, cross-over design. Participants were assessed for whole-body sweat loss (WBSL), local sweat rate (LSR), sweat gland activation (SGA), core temperature (Tcore), breakpoint of compensability (Pcrit) and calorimetric heat transfer components. Plasma volume and plasma taurine concentrations were established through pre- and post-trial blood samples.Results Taurine supplementation increased WBSL by 26.6% and 5.1% (p=0.035), LSR by 15.5% and 7.8% (p=0.013), SGA (1x1cm) by 32.2% and 29.9% (p<0.001) and SGA (3x3cm) by 22.1% and 17.1% (p=0.015) during the fixed- and ramped-humidity exercise periods, respectively. Evaporative heat loss was enhanced by 27% (p=0.010), heat-storage reduced by 72% (p=0.024) and Pcrit was greater in taurine vs placebo (25.0mmHg vs 21.7mmHg; p=0.002).Conclusion Taurine supplementation increased sweating responses during fixed Ḣprod in hot conditions, prior to substantial heat strain and before the breakpoint of compensability, demonstrating improved thermoregulatory capacity. The enhanced evaporative cooling and reduced heat-storage delayed the subsequent upward inflection in Tcore –represented by a greater Pcrit– and offers a potential dietary supplementation strategy to support thermoregulation. Journal Article European Journal of Applied Physiology 0 Springer Science and Business Media LLC 1439-6319 1439-6327 Taurine, sweating, heat, uncompensability, evaporative cooling, thermoregulation 6 4 2024 2024-04-06 10.1007/s00421-024-05478-3 COLLEGE NANME Science and Engineering - Faculty COLLEGE CODE FGSEN Swansea University SU Library paid the OA fee (TA Institutional Deal) Swansea University 2024-04-17T14:16:19.6333790 2024-03-22T14:09:49.2475731 Faculty of Science and Engineering School of Engineering and Applied Sciences - Sport and Exercise Sciences Jenny Peel 1 Melitta McNarry 0000-0003-0813-7477 2 Shane Heffernan 0000-0002-3297-9335 3 Venturino R. Nevola 4 Liam Kilduff 0000-0001-9449-2293 5 Kathryn Coates 6 Ed Dudley 7 Mark Waldron 0000-0002-2720-4615 8 65883__30045__554e948e06854f99a0fd70ee6b8c57aa.pdf 65883.VoR.pdf 2024-04-17T14:14:29.4707482 Output 1392450 application/pdf Version of Record true © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License. true eng http://creativecommons.org/licenses/by/4.0/
title The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
spellingShingle The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
Jenny Peel
Melitta McNarry
Shane Heffernan
Liam Kilduff
Kathryn Coates
Ed Dudley
Mark Waldron
title_short The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
title_full The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
title_fullStr The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
title_full_unstemmed The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
title_sort The effect of 8-day oral taurine supplementation on thermoregulation during low-intensity exercise at fixed heat production in hot conditions of incremental humidity
author_id_str_mv 86316fdeb6b4ee7ce0206f789eec781c
062f5697ff59f004bc8c713955988398
72c0b36891dfbec0378c0d0f7916e807
972ed9a1dda7a0de20581a0f8350be98
c98a9f7646a8c9360de034071d3992de
c7d05f992a817cd3b9a5f946bd909b71
70db7c6c54d46f5e70b39e5ae0a056fa
author_id_fullname_str_mv 86316fdeb6b4ee7ce0206f789eec781c_***_Jenny Peel
062f5697ff59f004bc8c713955988398_***_Melitta McNarry
72c0b36891dfbec0378c0d0f7916e807_***_Shane Heffernan
972ed9a1dda7a0de20581a0f8350be98_***_Liam Kilduff
c98a9f7646a8c9360de034071d3992de_***_Kathryn Coates
c7d05f992a817cd3b9a5f946bd909b71_***_Ed Dudley
70db7c6c54d46f5e70b39e5ae0a056fa_***_Mark Waldron
author Jenny Peel
Melitta McNarry
Shane Heffernan
Liam Kilduff
Kathryn Coates
Ed Dudley
Mark Waldron
author2 Jenny Peel
Melitta McNarry
Shane Heffernan
Venturino R. Nevola
Liam Kilduff
Kathryn Coates
Ed Dudley
Mark Waldron
format Journal article
container_title European Journal of Applied Physiology
container_volume 0
publishDate 2024
institution Swansea University
issn 1439-6319
1439-6327
doi_str_mv 10.1007/s00421-024-05478-3
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Sport and Exercise Sciences
document_store_str 1
active_str 0
description Purpose To determine the effect of taurine supplementation on sweating and core temperature responses, including the transition from compensable to uncompensable heat stress, during prolonged low-intensity exercise of a fixed-heat production (~200W/m2) in hot conditions (37.5°C), at both fixed and incremental vapour-pressure.Methods Fifteen females (n=3) and males (n=12; 27±5years, 78±9kg, ̇O2max 50.3±7.8mL/kg/min), completed a treadmill walking protocol (~200W/m2 heat production [Ḣprod]) in the heat (37.5±0.1°C) at fixed- (16mmHg) and ramped-humidity (Δ1.5mmHg/5-min) following one week of oral taurine supplementation (50mg/kg/bm) or placebo, in a double-blind, randomised, cross-over design. Participants were assessed for whole-body sweat loss (WBSL), local sweat rate (LSR), sweat gland activation (SGA), core temperature (Tcore), breakpoint of compensability (Pcrit) and calorimetric heat transfer components. Plasma volume and plasma taurine concentrations were established through pre- and post-trial blood samples.Results Taurine supplementation increased WBSL by 26.6% and 5.1% (p=0.035), LSR by 15.5% and 7.8% (p=0.013), SGA (1x1cm) by 32.2% and 29.9% (p<0.001) and SGA (3x3cm) by 22.1% and 17.1% (p=0.015) during the fixed- and ramped-humidity exercise periods, respectively. Evaporative heat loss was enhanced by 27% (p=0.010), heat-storage reduced by 72% (p=0.024) and Pcrit was greater in taurine vs placebo (25.0mmHg vs 21.7mmHg; p=0.002).Conclusion Taurine supplementation increased sweating responses during fixed Ḣprod in hot conditions, prior to substantial heat strain and before the breakpoint of compensability, demonstrating improved thermoregulatory capacity. The enhanced evaporative cooling and reduced heat-storage delayed the subsequent upward inflection in Tcore –represented by a greater Pcrit– and offers a potential dietary supplementation strategy to support thermoregulation.
published_date 2024-04-06T14:16:16Z
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score 11.012678

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