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The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation

Mark Waldron Orcid Logo, O. Jeffries, J. Tallent, S. Patterson, V. Nevola

European Journal of Applied Physiology, Volume: 119, Issue: 10, Pages: 2391 - 2399

Swansea University Author: Mark Waldron Orcid Logo

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DOI (Published version): 10.1007/s00421-019-04218-2

Abstract

PurposeThis study investigated the effects of a 10-day heat acclimation (HA) programme on the time course of changes in thermoneutral maximal oxygen uptake ( V˙ O2max) during and up to 10 days post-HA.MethodsTwenty-two male cyclists were assigned to a HA or control (Con) training group following bas...

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Published in: European Journal of Applied Physiology
ISSN: 1439-6319 1439-6327
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51538
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first_indexed 2019-08-27T15:30:51Z
last_indexed 2020-08-21T03:13:46Z
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2020-08-20T16:11:22.8807611</datestamp><bib-version>v2</bib-version><id>51538</id><entry>2019-08-27</entry><title>The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation</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>2019-08-27</date><deptcode>STSC</deptcode><abstract>PurposeThis study investigated the effects of a 10-day heat acclimation (HA) programme on the time course of changes in thermoneutral maximal oxygen uptake ( V&#x2D9; O2max) during and up to 10 days post-HA.MethodsTwenty-two male cyclists were assigned to a HA or control (Con) training group following baseline ramp tests of thermoneutral V&#x2D9; O2max. Ten days of fixed-intensity (50% baseline V&#x2D9; O2max) indoor cycling was performed in either&#x2009;~&#x2009;38.0 &#xB0;C (HA) or&#x2009;~&#x2009;20 &#xB0;C (Con). V&#x2D9; O2max was re-tested on HA days 5, 10 and post-HA days 1, 2, 3, 4, 5 and 10.ResultsV&#x2D9; O2max initially declined across time in both groups during training (P&#x2009;&lt;&#x2009;0.05), before increasing in the post-HA period in both groups (P&#x2009;&lt;&#x2009;0.05). However, V&#x2D9; O2max was higher than control by post-HA day 4 in the HA group (P&#x2009;=&#x2009;0.046).ConclusionsThe non-linear time course of V&#x2D9; O2max adaptation suggests that post-testing should be performed 96-h post-training to identify the maximal change for most individuals. In preparation for training or testing, athletes can augment their aerobic power in thermoneutral environments by performing 10 days HA, but the full effects will manifest at varying stages of the post-HA period.</abstract><type>Journal Article</type><journal>European Journal of Applied Physiology</journal><volume>119</volume><journalNumber>10</journalNumber><paginationStart>2391</paginationStart><paginationEnd>2399</paginationEnd><publisher/><issnPrint>1439-6319</issnPrint><issnElectronic>1439-6327</issnElectronic><keywords>Thermal, Training, Cycling, Endurance, Heat acclimation, Maximal aerobic power</keywords><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2019</publishedYear><publishedDate>2019-12-31</publishedDate><doi>10.1007/s00421-019-04218-2</doi><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>2020-08-20T16:11:22.8807611</lastEdited><Created>2019-08-27T08:40:55.4334060</Created><authors><author><firstname>Mark</firstname><surname>Waldron</surname><orcid>0000-0002-2720-4615</orcid><order>1</order></author><author><firstname>O.</firstname><surname>Jeffries</surname><order>2</order></author><author><firstname>J.</firstname><surname>Tallent</surname><order>3</order></author><author><firstname>S.</firstname><surname>Patterson</surname><order>4</order></author><author><firstname>V.</firstname><surname>Nevola</surname><order>5</order></author></authors><documents><document><filename>0051538-15102019112820.pdf</filename><originalFilename>waldron2019(3).pdf</originalFilename><uploaded>2019-10-15T11:28:20.1870000</uploaded><type>Output</type><contentLength>665860</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><embargoDate>2019-10-15T00:00:00.0000000</embargoDate><copyrightCorrect>false</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807>
spelling 2020-08-20T16:11:22.8807611 v2 51538 2019-08-27 The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation 70db7c6c54d46f5e70b39e5ae0a056fa 0000-0002-2720-4615 Mark Waldron Mark Waldron true false 2019-08-27 STSC PurposeThis study investigated the effects of a 10-day heat acclimation (HA) programme on the time course of changes in thermoneutral maximal oxygen uptake ( V˙ O2max) during and up to 10 days post-HA.MethodsTwenty-two male cyclists were assigned to a HA or control (Con) training group following baseline ramp tests of thermoneutral V˙ O2max. Ten days of fixed-intensity (50% baseline V˙ O2max) indoor cycling was performed in either ~ 38.0 °C (HA) or ~ 20 °C (Con). V˙ O2max was re-tested on HA days 5, 10 and post-HA days 1, 2, 3, 4, 5 and 10.ResultsV˙ O2max initially declined across time in both groups during training (P < 0.05), before increasing in the post-HA period in both groups (P < 0.05). However, V˙ O2max was higher than control by post-HA day 4 in the HA group (P = 0.046).ConclusionsThe non-linear time course of V˙ O2max adaptation suggests that post-testing should be performed 96-h post-training to identify the maximal change for most individuals. In preparation for training or testing, athletes can augment their aerobic power in thermoneutral environments by performing 10 days HA, but the full effects will manifest at varying stages of the post-HA period. Journal Article European Journal of Applied Physiology 119 10 2391 2399 1439-6319 1439-6327 Thermal, Training, Cycling, Endurance, Heat acclimation, Maximal aerobic power 31 12 2019 2019-12-31 10.1007/s00421-019-04218-2 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2020-08-20T16:11:22.8807611 2019-08-27T08:40:55.4334060 Mark Waldron 0000-0002-2720-4615 1 O. Jeffries 2 J. Tallent 3 S. Patterson 4 V. Nevola 5 0051538-15102019112820.pdf waldron2019(3).pdf 2019-10-15T11:28:20.1870000 Output 665860 application/pdf Version of Record true 2019-10-15T00:00:00.0000000 false eng
title The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
spellingShingle The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
Mark Waldron
title_short The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
title_full The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
title_fullStr The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
title_full_unstemmed The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
title_sort The time course of adaptations in thermoneutral maximal oxygen consumption following heat acclimation
author_id_str_mv 70db7c6c54d46f5e70b39e5ae0a056fa
author_id_fullname_str_mv 70db7c6c54d46f5e70b39e5ae0a056fa_***_Mark Waldron
author Mark Waldron
author2 Mark Waldron
O. Jeffries
J. Tallent
S. Patterson
V. Nevola
format Journal article
container_title European Journal of Applied Physiology
container_volume 119
container_issue 10
container_start_page 2391
publishDate 2019
institution Swansea University
issn 1439-6319
1439-6327
doi_str_mv 10.1007/s00421-019-04218-2
document_store_str 1
active_str 0
description PurposeThis study investigated the effects of a 10-day heat acclimation (HA) programme on the time course of changes in thermoneutral maximal oxygen uptake ( V˙ O2max) during and up to 10 days post-HA.MethodsTwenty-two male cyclists were assigned to a HA or control (Con) training group following baseline ramp tests of thermoneutral V˙ O2max. Ten days of fixed-intensity (50% baseline V˙ O2max) indoor cycling was performed in either ~ 38.0 °C (HA) or ~ 20 °C (Con). V˙ O2max was re-tested on HA days 5, 10 and post-HA days 1, 2, 3, 4, 5 and 10.ResultsV˙ O2max initially declined across time in both groups during training (P < 0.05), before increasing in the post-HA period in both groups (P < 0.05). However, V˙ O2max was higher than control by post-HA day 4 in the HA group (P = 0.046).ConclusionsThe non-linear time course of V˙ O2max adaptation suggests that post-testing should be performed 96-h post-training to identify the maximal change for most individuals. In preparation for training or testing, athletes can augment their aerobic power in thermoneutral environments by performing 10 days HA, but the full effects will manifest at varying stages of the post-HA period.
published_date 2019-12-31T04:03:26Z
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score 11.012924

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