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Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.

Richard Bracken Orcid Logo

Journal of Sports Medicine and Physical Fitness, Volume: 56, Issue: 11, Pages: 1392 - 1400

Swansea University Author: Richard Bracken Orcid Logo

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Abstract

INTRODUCTION:Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycaemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycaemic or performance gains have been under-re...

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Published in: Journal of Sports Medicine and Physical Fitness
ISSN: 0022-4707
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa27009
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2019-07-02T11:03:35.5572674</datestamp><bib-version>v2</bib-version><id>27009</id><entry>2016-03-31</entry><title>Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.</title><swanseaauthors><author><sid>f5da81cd18adfdedb2ccb845bddc12f7</sid><ORCID>0000-0002-6986-6449</ORCID><firstname>Richard</firstname><surname>Bracken</surname><name>Richard Bracken</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2016-03-31</date><deptcode>STSC</deptcode><abstract>INTRODUCTION:Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycaemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycaemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following preexercise ingestion of waxy barley starch (WBS) or dextrose (DEX) in T1DM.METHODS:Seven participants attended the laboratory on two separate occasions following preliminary testing. On each visit participants consumed either 0.6 g.kg-1 body mass of DEX or WBS 2-h before a 26-min discontinuous incremental treadmill protocol (4-min running: 1.5-min rest) finishing at 80&#xB1;4% O2peak followed by a 10-min performance run on a nonmotorised treadmill. Capillary blood samples were taken at rest, during and following exercise and analysed for glucose (BG) and acid-base variables. Data (mean&#xB1;SEM) were analysed using repeated measures ANOVA (P&lt;0.05).RESULTS:BG reached similar peak values one hour after CHO ingestion and immediate presub- maximal exercise BG were comparable. Resting CHO oxidation was elevated and lipid oxidation lower under WBS (P&lt;0.05). There were no metabolic or cardio-respiratory differences during the sub-maximal exercise (P&gt;0.05). In the final quartile of the performance run, a greater distance was completed under WBS (WBS 323&#xB1;21 vs. DEX 301&#xB1;20 m, P=0.02).CONCLUSIONS:Consumption of WBS demonstrated similar hyperglycaemic responses to dextrose ingestion but a greater rate of CHO use at rest. Interestingly, T1DM individuals displayed an improved performance at the latter stages of a high-intensity run test.</abstract><type>Journal Article</type><journal>Journal of Sports Medicine and Physical Fitness</journal><volume>56</volume><journalNumber>11</journalNumber><paginationStart>1392</paginationStart><paginationEnd>1400</paginationEnd><publisher/><issnPrint>0022-4707</issnPrint><keywords/><publishedDay>30</publishedDay><publishedMonth>11</publishedMonth><publishedYear>2016</publishedYear><publishedDate>2016-11-30</publishedDate><doi/><url>https://www.minervamedica.it/en/journals/sports-med-physical-fitness/article.php?cod=R40Y2016N11A1392</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>2019-07-02T11:03:35.5572674</lastEdited><Created>2016-03-31T20:34:57.0347565</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>Richard</firstname><surname>Bracken</surname><orcid>0000-0002-6986-6449</orcid><order>1</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2019-07-02T11:03:35.5572674 v2 27009 2016-03-31 Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes. f5da81cd18adfdedb2ccb845bddc12f7 0000-0002-6986-6449 Richard Bracken Richard Bracken true false 2016-03-31 STSC INTRODUCTION:Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycaemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycaemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following preexercise ingestion of waxy barley starch (WBS) or dextrose (DEX) in T1DM.METHODS:Seven participants attended the laboratory on two separate occasions following preliminary testing. On each visit participants consumed either 0.6 g.kg-1 body mass of DEX or WBS 2-h before a 26-min discontinuous incremental treadmill protocol (4-min running: 1.5-min rest) finishing at 80±4% O2peak followed by a 10-min performance run on a nonmotorised treadmill. Capillary blood samples were taken at rest, during and following exercise and analysed for glucose (BG) and acid-base variables. Data (mean±SEM) were analysed using repeated measures ANOVA (P<0.05).RESULTS:BG reached similar peak values one hour after CHO ingestion and immediate presub- maximal exercise BG were comparable. Resting CHO oxidation was elevated and lipid oxidation lower under WBS (P<0.05). There were no metabolic or cardio-respiratory differences during the sub-maximal exercise (P>0.05). In the final quartile of the performance run, a greater distance was completed under WBS (WBS 323±21 vs. DEX 301±20 m, P=0.02).CONCLUSIONS:Consumption of WBS demonstrated similar hyperglycaemic responses to dextrose ingestion but a greater rate of CHO use at rest. Interestingly, T1DM individuals displayed an improved performance at the latter stages of a high-intensity run test. Journal Article Journal of Sports Medicine and Physical Fitness 56 11 1392 1400 0022-4707 30 11 2016 2016-11-30 https://www.minervamedica.it/en/journals/sports-med-physical-fitness/article.php?cod=R40Y2016N11A1392 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2019-07-02T11:03:35.5572674 2016-03-31T20:34:57.0347565 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Richard Bracken 0000-0002-6986-6449 1
title Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
spellingShingle Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
Richard Bracken
title_short Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
title_full Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
title_fullStr Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
title_full_unstemmed Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
title_sort Improved end-stage high intensity performance but similar glycaemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes.
author_id_str_mv f5da81cd18adfdedb2ccb845bddc12f7
author_id_fullname_str_mv f5da81cd18adfdedb2ccb845bddc12f7_***_Richard Bracken
author Richard Bracken
author2 Richard Bracken
format Journal article
container_title Journal of Sports Medicine and Physical Fitness
container_volume 56
container_issue 11
container_start_page 1392
publishDate 2016
institution Swansea University
issn 0022-4707
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
url https://www.minervamedica.it/en/journals/sports-med-physical-fitness/article.php?cod=R40Y2016N11A1392
document_store_str 0
active_str 0
description INTRODUCTION:Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycaemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycaemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following preexercise ingestion of waxy barley starch (WBS) or dextrose (DEX) in T1DM.METHODS:Seven participants attended the laboratory on two separate occasions following preliminary testing. On each visit participants consumed either 0.6 g.kg-1 body mass of DEX or WBS 2-h before a 26-min discontinuous incremental treadmill protocol (4-min running: 1.5-min rest) finishing at 80±4% O2peak followed by a 10-min performance run on a nonmotorised treadmill. Capillary blood samples were taken at rest, during and following exercise and analysed for glucose (BG) and acid-base variables. Data (mean±SEM) were analysed using repeated measures ANOVA (P<0.05).RESULTS:BG reached similar peak values one hour after CHO ingestion and immediate presub- maximal exercise BG were comparable. Resting CHO oxidation was elevated and lipid oxidation lower under WBS (P<0.05). There were no metabolic or cardio-respiratory differences during the sub-maximal exercise (P>0.05). In the final quartile of the performance run, a greater distance was completed under WBS (WBS 323±21 vs. DEX 301±20 m, P=0.02).CONCLUSIONS:Consumption of WBS demonstrated similar hyperglycaemic responses to dextrose ingestion but a greater rate of CHO use at rest. Interestingly, T1DM individuals displayed an improved performance at the latter stages of a high-intensity run test.
published_date 2016-11-30T03:32:38Z
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