Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning

Waldron, Mark; Papavasileiou, G.; Jeffries, O.; Nevola, V.; Heffernan, Shane; Kilduff, Liam; Tallent, J.

doi:10.1016/j.jtherbio.2020.102724

Journal article 1124 views 341 downloads

Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning

Mark Waldron

, G. Papavasileiou, O. Jeffries, V. Nevola, Shane Heffernan

, Liam Kilduff

, J. Tallent

Journal of Thermal Biology, Volume: 93, Start page: 102724

Swansea University Authors: Mark Waldron , Shane Heffernan , Liam Kilduff

PDF | Accepted Manuscript

©2020 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND)
Download (672.8KB)

Check full text

DOI (Published version): 10.1016/j.jtherbio.2020.102724

Abstract

We investigated the effects of: 1) Ischemic pre-conditioning (IPC) plus a concurrent five-day heat acclimation + IPC (IPC + HA), 2) five-day HA with sham IPC (HA), or 3) control (CON) on thermoneutral measurements of endurance performance, resting measures of skeletal muscle oxygenation and blood fl...

Full description

Published in:	Journal of Thermal Biology
ISSN:	0306-4565
Published:	Elsevier BV 2020
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa55104
Tags:	Add Tag No Tags, Be the first to tag this record!

first_indexed	2020-09-01T09:54:04Z
last_indexed	2021-12-02T04:11:02Z
id	cronfa55104
recordtype	SURis
fullrecord	<?xml version="1.0"?><rfc1807><datestamp>2021-12-01T11:59:58.4507571</datestamp><bib-version>v2</bib-version><id>55104</id><entry>2020-09-01</entry><title>Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning</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><author><sid>72c0b36891dfbec0378c0d0f7916e807</sid><ORCID>0000-0002-3297-9335</ORCID><firstname>Shane</firstname><surname>Heffernan</surname><name>Shane Heffernan</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>972ed9a1dda7a0de20581a0f8350be98</sid><ORCID>0000-0001-9449-2293</ORCID><firstname>Liam</firstname><surname>Kilduff</surname><name>Liam Kilduff</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2020-09-01</date><deptcode>STSC</deptcode><abstract>We investigated the effects of: 1) Ischemic pre-conditioning (IPC) plus a concurrent five-day heat acclimation + IPC (IPC + HA), 2) five-day HA with sham IPC (HA), or 3) control (CON) on thermoneutral measurements of endurance performance, resting measures of skeletal muscle oxygenation and blood flow. Twenty-nine participants were randomly allocated to three groups, which included: 1) five-days of repeated leg occlusion (4 x 5-min) IPC at limb occlusive pressure, plus fixed-intensity (55% O2max) cycling HA at ∼36 °C/40% humidity; 2) HA plus sham IPC (20 mmHg) or 3) or CON (thermoneutral 55% O2max plus sham IPC). In IPC + HA and HA, there were increases in maximal oxygen consumption (O2max) (7.8% and 5.4%, respectively; P < 0.05), ventilatory threshold (VT) (5.6% and 2.4%, respectively, P < 0.05), delta efficiency (DE) (2.0% and 1.4%, respectively; P < 0.05) and maximum oxygen pulse (O2pulse-Max) (7.0% and 6.9%, respectively; P < 0.05) during an exhaustive incremental test. There were no changes for CON (P > 0.05). Changes (P < 0.05) in resting core temperature (TC), muscle oxygen consumption (mO2), and limb blood flow (LBF) were also found pre-to-post intervention among the HA and IPC + HA groups, but not in CON (P > 0.05). Five-days of either HA or IPC + HA can enhance markers of endurance performance in cooler environments, alongside improved muscle oxygen extraction, blood flow, exercising muscle efficiency and O2 pulse at higher intensities, thus suggesting the occurrence of peripheral adaptation. Both HA and IPC + HA enhance the adaptation of endurance capacity, which might partly relate to peripheral changes.</abstract><type>Journal Article</type><journal>Journal of Thermal Biology</journal><volume>93</volume><journalNumber/><paginationStart>102724</paginationStart><paginationEnd/><publisher>Elsevier BV</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0306-4565</issnPrint><issnElectronic/><keywords>Hot training, Maximal oxygen consumption, Limb occlusion</keywords><publishedDay>1</publishedDay><publishedMonth>10</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-10-01</publishedDate><doi>10.1016/j.jtherbio.2020.102724</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>2021-12-01T11:59:58.4507571</lastEdited><Created>2020-09-01T10:51:02.9933179</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences</level></path><authors><author><firstname>Mark</firstname><surname>Waldron</surname><orcid>0000-0002-2720-4615</orcid><order>1</order></author><author><firstname>G.</firstname><surname>Papavasileiou</surname><order>2</order></author><author><firstname>O.</firstname><surname>Jeffries</surname><order>3</order></author><author><firstname>V.</firstname><surname>Nevola</surname><order>4</order></author><author><firstname>Shane</firstname><surname>Heffernan</surname><orcid>0000-0002-3297-9335</orcid><order>5</order></author><author><firstname>Liam</firstname><surname>Kilduff</surname><orcid>0000-0001-9449-2293</orcid><order>6</order></author><author><firstname>J.</firstname><surname>Tallent</surname><order>7</order></author></authors><documents><document><filename>55104__18093__106dca9c1d7846238bd6307b4ab6b071.pdf</filename><originalFilename>55104.pdf</originalFilename><uploaded>2020-09-01T10:53:51.3707273</uploaded><type>Output</type><contentLength>688949</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2021-09-08T00:00:00.0000000</embargoDate><documentNotes>©2020 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND)</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by-nc-nd/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling	2021-12-01T11:59:58.4507571 v2 55104 2020-09-01 Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning 70db7c6c54d46f5e70b39e5ae0a056fa 0000-0002-2720-4615 Mark Waldron Mark Waldron true false 72c0b36891dfbec0378c0d0f7916e807 0000-0002-3297-9335 Shane Heffernan Shane Heffernan true false 972ed9a1dda7a0de20581a0f8350be98 0000-0001-9449-2293 Liam Kilduff Liam Kilduff true false 2020-09-01 STSC We investigated the effects of: 1) Ischemic pre-conditioning (IPC) plus a concurrent five-day heat acclimation + IPC (IPC + HA), 2) five-day HA with sham IPC (HA), or 3) control (CON) on thermoneutral measurements of endurance performance, resting measures of skeletal muscle oxygenation and blood flow. Twenty-nine participants were randomly allocated to three groups, which included: 1) five-days of repeated leg occlusion (4 x 5-min) IPC at limb occlusive pressure, plus fixed-intensity (55% O2max) cycling HA at ∼36 °C/40% humidity; 2) HA plus sham IPC (20 mmHg) or 3) or CON (thermoneutral 55% O2max plus sham IPC). In IPC + HA and HA, there were increases in maximal oxygen consumption (O2max) (7.8% and 5.4%, respectively; P < 0.05), ventilatory threshold (VT) (5.6% and 2.4%, respectively, P < 0.05), delta efficiency (DE) (2.0% and 1.4%, respectively; P < 0.05) and maximum oxygen pulse (O2pulse-Max) (7.0% and 6.9%, respectively; P < 0.05) during an exhaustive incremental test. There were no changes for CON (P > 0.05). Changes (P < 0.05) in resting core temperature (TC), muscle oxygen consumption (mO2), and limb blood flow (LBF) were also found pre-to-post intervention among the HA and IPC + HA groups, but not in CON (P > 0.05). Five-days of either HA or IPC + HA can enhance markers of endurance performance in cooler environments, alongside improved muscle oxygen extraction, blood flow, exercising muscle efficiency and O2 pulse at higher intensities, thus suggesting the occurrence of peripheral adaptation. Both HA and IPC + HA enhance the adaptation of endurance capacity, which might partly relate to peripheral changes. Journal Article Journal of Thermal Biology 93 102724 Elsevier BV 0306-4565 Hot training, Maximal oxygen consumption, Limb occlusion 1 10 2020 2020-10-01 10.1016/j.jtherbio.2020.102724 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2021-12-01T11:59:58.4507571 2020-09-01T10:51:02.9933179 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Mark Waldron 0000-0002-2720-4615 1 G. Papavasileiou 2 O. Jeffries 3 V. Nevola 4 Shane Heffernan 0000-0002-3297-9335 5 Liam Kilduff 0000-0001-9449-2293 6 J. Tallent 7 55104__18093__106dca9c1d7846238bd6307b4ab6b071.pdf 55104.pdf 2020-09-01T10:53:51.3707273 Output 688949 application/pdf Accepted Manuscript true 2021-09-08T00:00:00.0000000 ©2020 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
spellingShingle	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning Mark Waldron Shane Heffernan Liam Kilduff
title_short	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
title_full	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
title_fullStr	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
title_full_unstemmed	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
title_sort	Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning
author_id_str_mv	70db7c6c54d46f5e70b39e5ae0a056fa 72c0b36891dfbec0378c0d0f7916e807 972ed9a1dda7a0de20581a0f8350be98
author_id_fullname_str_mv	70db7c6c54d46f5e70b39e5ae0a056fa_*_Mark Waldron 72c0b36891dfbec0378c0d0f7916e807__Shane Heffernan 972ed9a1dda7a0de20581a0f8350be98_**_Liam Kilduff
author	Mark Waldron Shane Heffernan Liam Kilduff
author2	Mark Waldron G. Papavasileiou O. Jeffries V. Nevola Shane Heffernan Liam Kilduff J. Tallent
format	Journal article
container_title	Journal of Thermal Biology
container_volume	93
container_start_page	102724
publishDate	2020
institution	Swansea University
issn	0306-4565
doi_str_mv	10.1016/j.jtherbio.2020.102724
publisher	Elsevier BV
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences
document_store_str	1
active_str	0
description	We investigated the effects of: 1) Ischemic pre-conditioning (IPC) plus a concurrent five-day heat acclimation + IPC (IPC + HA), 2) five-day HA with sham IPC (HA), or 3) control (CON) on thermoneutral measurements of endurance performance, resting measures of skeletal muscle oxygenation and blood flow. Twenty-nine participants were randomly allocated to three groups, which included: 1) five-days of repeated leg occlusion (4 x 5-min) IPC at limb occlusive pressure, plus fixed-intensity (55% O2max) cycling HA at ∼36 °C/40% humidity; 2) HA plus sham IPC (20 mmHg) or 3) or CON (thermoneutral 55% O2max plus sham IPC). In IPC + HA and HA, there were increases in maximal oxygen consumption (O2max) (7.8% and 5.4%, respectively; P < 0.05), ventilatory threshold (VT) (5.6% and 2.4%, respectively, P < 0.05), delta efficiency (DE) (2.0% and 1.4%, respectively; P < 0.05) and maximum oxygen pulse (O2pulse-Max) (7.0% and 6.9%, respectively; P < 0.05) during an exhaustive incremental test. There were no changes for CON (P > 0.05). Changes (P < 0.05) in resting core temperature (TC), muscle oxygen consumption (mO2), and limb blood flow (LBF) were also found pre-to-post intervention among the HA and IPC + HA groups, but not in CON (P > 0.05). Five-days of either HA or IPC + HA can enhance markers of endurance performance in cooler environments, alongside improved muscle oxygen extraction, blood flow, exercising muscle efficiency and O2 pulse at higher intensities, thus suggesting the occurrence of peripheral adaptation. Both HA and IPC + HA enhance the adaptation of endurance capacity, which might partly relate to peripheral changes.
published_date	2020-10-01T04:09:05Z
_version_	1763753638667223040
score	11.037603

Concurrent adaptations in maximal aerobic capacity, heat tolerance, microvascular blood flow and oxygen extraction following heat acclimation and ischemic preconditioning

Similar Items