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Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week

Mark Waldron Orcid Logo

Archives of Physical Health and Sports Medicine

Swansea University Author: Mark Waldron Orcid Logo

Abstract

We investigated the effects of five consecutive days of short-term heat acclimation (STHA), with a 48-h recovery,onsimulated rugby league performance, peakoxygen uptake (O2peak), physiological and perceptual responses in atemperate environment.Twelve male rugby league players took part in a matched-...

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Published in: Archives of Physical Health and Sports Medicine
Published: Sryahwa Publications 2018
Online Access: http://www.sryahwapublications.com/archives-of-physical-health-and-sports-medicine/pdf/v1-i1/4.pdf
URI: https://cronfa.swan.ac.uk/Record/cronfa51607
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2019-09-03T16:12:04.4561261</datestamp><bib-version>v2</bib-version><id>51607</id><entry>2019-08-28</entry><title>Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week</title><swanseaauthors><author><sid>70db7c6c54d46f5e70b39e5ae0a056fa</sid><ORCID>0000-0002-2720-4615</ORCID><firstname>Mark</firstname><surname>Waldron</surname><name>Mark Waldron</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2019-08-28</date><deptcode>STSC</deptcode><abstract>We investigated the effects of five consecutive days of short-term heat acclimation (STHA), with a 48-h recovery,onsimulated rugby league performance, peakoxygen uptake (O2peak), physiological and perceptual responses in atemperate environment.Twelve male rugby league players took part in a matched-pairs design, cycling 60-min/day, for five days at 40% O2peak, in a control (19 &#xB1; 1C; 50 &#xB1; 3 % RH;n = 6) or STHA group (33 &#xB1; 0.5 C; 70&#xB1; 4 % RH; n = 6). Subjects completed aO2peak test and rugby simulation, followed by a time-to-exhaustion,preand post-intervention, with physiological and perceptual responses measured during the interventions. Despiteno effect on simulatedperformance (P&gt; 0.05), there were increases in time-to-exhaustion among both groups(P= 0.016), without group effects (P = 0.802). The STHA group adapted across the intervention, with lowertympanic temperature, perceptual responses and heart rate over time (P&lt; 0.05),whichwere typically higherthan the control group (P&lt; 0.05). Plasma volume did not increase over time or change between groups (P= 0.290) and O2peak reduced pre-to-post (P &lt; 0.001).There was a relationship between body mass losses andplasma volume expansion (r = -0.79, P = 0.022). STHA improvedtolerance to the heatbut not performance insimulated matches or exhaustive tests in temperate conditions, compared to thermoneutralexercise. The limitedeffects of STHA might relate to the brief post-intervention recovery period or the lack of fluid ingestion controlduring acclimation.</abstract><type>Journal Article</type><journal>Archives of Physical Health and Sports Medicine</journal><publisher>Sryahwa Publications</publisher><keywords/><publishedDay>21</publishedDay><publishedMonth>8</publishedMonth><publishedYear>2018</publishedYear><publishedDate>2018-08-21</publishedDate><doi/><url>http://www.sryahwapublications.com/archives-of-physical-health-and-sports-medicine/pdf/v1-i1/4.pdf</url><notes/><college>COLLEGE NANME</college><department>Sport and Exercise Sciences</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>STSC</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2019-09-03T16:12:04.4561261</lastEdited><Created>2019-08-28T10:30:16.1919366</Created><path><level id="1">College of Engineering</level><level id="2">Engineering</level></path><authors><author><firstname>Mark</firstname><surname>Waldron</surname><orcid>0000-0002-2720-4615</orcid><order>1</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2019-09-03T16:12:04.4561261 v2 51607 2019-08-28 Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week 70db7c6c54d46f5e70b39e5ae0a056fa 0000-0002-2720-4615 Mark Waldron Mark Waldron true false 2019-08-28 STSC We investigated the effects of five consecutive days of short-term heat acclimation (STHA), with a 48-h recovery,onsimulated rugby league performance, peakoxygen uptake (O2peak), physiological and perceptual responses in atemperate environment.Twelve male rugby league players took part in a matched-pairs design, cycling 60-min/day, for five days at 40% O2peak, in a control (19 ± 1C; 50 ± 3 % RH;n = 6) or STHA group (33 ± 0.5 C; 70± 4 % RH; n = 6). Subjects completed aO2peak test and rugby simulation, followed by a time-to-exhaustion,preand post-intervention, with physiological and perceptual responses measured during the interventions. Despiteno effect on simulatedperformance (P> 0.05), there were increases in time-to-exhaustion among both groups(P= 0.016), without group effects (P = 0.802). The STHA group adapted across the intervention, with lowertympanic temperature, perceptual responses and heart rate over time (P< 0.05),whichwere typically higherthan the control group (P< 0.05). Plasma volume did not increase over time or change between groups (P= 0.290) and O2peak reduced pre-to-post (P < 0.001).There was a relationship between body mass losses andplasma volume expansion (r = -0.79, P = 0.022). STHA improvedtolerance to the heatbut not performance insimulated matches or exhaustive tests in temperate conditions, compared to thermoneutralexercise. The limitedeffects of STHA might relate to the brief post-intervention recovery period or the lack of fluid ingestion controlduring acclimation. Journal Article Archives of Physical Health and Sports Medicine Sryahwa Publications 21 8 2018 2018-08-21 http://www.sryahwapublications.com/archives-of-physical-health-and-sports-medicine/pdf/v1-i1/4.pdf COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2019-09-03T16:12:04.4561261 2019-08-28T10:30:16.1919366 College of Engineering Engineering Mark Waldron 0000-0002-2720-4615 1
title Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
spellingShingle Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
Mark Waldron
title_short Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
title_full Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
title_fullStr Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
title_full_unstemmed Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
title_sort Limited Effects of Short-Term Heat Acclimation during a Rugby League Training Week
author_id_str_mv 70db7c6c54d46f5e70b39e5ae0a056fa
author_id_fullname_str_mv 70db7c6c54d46f5e70b39e5ae0a056fa_***_Mark Waldron
author Mark Waldron
author2 Mark Waldron
format Journal article
container_title Archives of Physical Health and Sports Medicine
publishDate 2018
institution Swansea University
publisher Sryahwa Publications
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
url http://www.sryahwapublications.com/archives-of-physical-health-and-sports-medicine/pdf/v1-i1/4.pdf
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description We investigated the effects of five consecutive days of short-term heat acclimation (STHA), with a 48-h recovery,onsimulated rugby league performance, peakoxygen uptake (O2peak), physiological and perceptual responses in atemperate environment.Twelve male rugby league players took part in a matched-pairs design, cycling 60-min/day, for five days at 40% O2peak, in a control (19 ± 1C; 50 ± 3 % RH;n = 6) or STHA group (33 ± 0.5 C; 70± 4 % RH; n = 6). Subjects completed aO2peak test and rugby simulation, followed by a time-to-exhaustion,preand post-intervention, with physiological and perceptual responses measured during the interventions. Despiteno effect on simulatedperformance (P> 0.05), there were increases in time-to-exhaustion among both groups(P= 0.016), without group effects (P = 0.802). The STHA group adapted across the intervention, with lowertympanic temperature, perceptual responses and heart rate over time (P< 0.05),whichwere typically higherthan the control group (P< 0.05). Plasma volume did not increase over time or change between groups (P= 0.290) and O2peak reduced pre-to-post (P < 0.001).There was a relationship between body mass losses andplasma volume expansion (r = -0.79, P = 0.022). STHA improvedtolerance to the heatbut not performance insimulated matches or exhaustive tests in temperate conditions, compared to thermoneutralexercise. The limitedeffects of STHA might relate to the brief post-intervention recovery period or the lack of fluid ingestion controlduring acclimation.
published_date 2018-08-21T04:06:02Z
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score 10.876655