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

Richard Bracken Orcid Logo, Liam Kilduff Orcid Logo

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

Swansea University Authors: Richard Bracken Orcid Logo, Liam Kilduff Orcid Logo

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Abstract

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

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Published in: The Journal of Sports Medicine and Physical Fitness
ISSN: 0022-4707 1827-1928
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa50338
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2019-10-15T12:46:59.9635686</datestamp><bib-version>v2</bib-version><id>50338</id><entry>2019-05-14</entry><title>Improved end-stage high-intensity performance but similar glycemic 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><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>2019-05-14</date><deptcode>STSC</deptcode><abstract>BACKGROUND: Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following pre-exercise 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 body mass of DEX or WBS 2 hours before a 26-minute discontinuous incremental treadmill protocol (4-minute running: 1.5-min rest) finishing at 80&#xB1;4% V&#x307;O2peak followed by a 10-min performance run on a non-motorized treadmill. Capillary blood samples were taken at rest, during and following exercise and analyzed for glucose (BG) and acid-base variables. Data (mean &#xB1; SEM) were analyzed using repeated measures ANOVA (P&lt;0.05).RESULTS: BG reached similar peak values one hour after CHO ingestion and immediate pre-sub-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 hyperglycemic 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>The 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><issnElectronic>1827-1928</issnElectronic><keywords/><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2016</publishedYear><publishedDate>2016-12-31</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>2019-10-15T12:46:59.9635686</lastEdited><Created>2019-05-14T09:53:02.2651916</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><author><firstname>Liam</firstname><surname>Kilduff</surname><orcid>0000-0001-9449-2293</orcid><order>2</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2019-10-15T12:46:59.9635686 v2 50338 2019-05-14 Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes f5da81cd18adfdedb2ccb845bddc12f7 0000-0002-6986-6449 Richard Bracken Richard Bracken true false 972ed9a1dda7a0de20581a0f8350be98 0000-0001-9449-2293 Liam Kilduff Liam Kilduff true false 2019-05-14 STSC BACKGROUND: Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following pre-exercise 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 body mass of DEX or WBS 2 hours before a 26-minute discontinuous incremental treadmill protocol (4-minute running: 1.5-min rest) finishing at 80±4% V̇O2peak followed by a 10-min performance run on a non-motorized treadmill. Capillary blood samples were taken at rest, during and following exercise and analyzed for glucose (BG) and acid-base variables. Data (mean ± SEM) were analyzed using repeated measures ANOVA (P<0.05).RESULTS: BG reached similar peak values one hour after CHO ingestion and immediate pre-sub-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 hyperglycemic 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 The Journal of Sports Medicine and Physical Fitness 56 11 1392 1400 0022-4707 1827-1928 31 12 2016 2016-12-31 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 2019-10-15T12:46:59.9635686 2019-05-14T09:53:02.2651916 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 Liam Kilduff 0000-0001-9449-2293 2
title Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
spellingShingle Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
Richard Bracken
Liam Kilduff
title_short Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
title_full Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
title_fullStr Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
title_full_unstemmed Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
title_sort Improved end-stage high-intensity performance but similar glycemic responses after waxy barley starch ingestion compared to dextrose in type 1 diabetes
author_id_str_mv f5da81cd18adfdedb2ccb845bddc12f7
972ed9a1dda7a0de20581a0f8350be98
author_id_fullname_str_mv f5da81cd18adfdedb2ccb845bddc12f7_***_Richard Bracken
972ed9a1dda7a0de20581a0f8350be98_***_Liam Kilduff
author Richard Bracken
Liam Kilduff
author2 Richard Bracken
Liam Kilduff
format Journal article
container_title The 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
1827-1928
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 BACKGROUND: Pre-exercise carbohydrate (CHO) ingestion is an effective strategy for reducing the occurrence of hypoglycemia during or after exercise in individuals with type 1 diabetes (T1DM). The metabolic effects of ingestion of different CHOs for glycemic or performance gains have been under-researched. This study compared metabolic responses and fuel use during sub-maximal and high-intensity performance running following pre-exercise 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 body mass of DEX or WBS 2 hours before a 26-minute discontinuous incremental treadmill protocol (4-minute running: 1.5-min rest) finishing at 80±4% V̇O2peak followed by a 10-min performance run on a non-motorized treadmill. Capillary blood samples were taken at rest, during and following exercise and analyzed for glucose (BG) and acid-base variables. Data (mean ± SEM) were analyzed using repeated measures ANOVA (P<0.05).RESULTS: BG reached similar peak values one hour after CHO ingestion and immediate pre-sub-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 hyperglycemic 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 2016-12-31T04:01:46Z
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score 10.998093

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