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The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes. / Benjamin Gray

Swansea University Author: Benjamin Gray

Abstract

RATIONALE: Carbohydrate (CHO) ingestion is a recommended strategy to reduce the rislc of hypoglycaemia during and after exercise in people with type 1 diabetes (TIDM). Emerging research has shown that pre-exercise consumption of the low glycaemic index (GI) CHO isomaltulose increases blood glucose (...

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Published: 2011
Institution: Swansea University
Degree level: Master of Philosophy
Degree name: M.Phil
URI: https://cronfa.swan.ac.uk/Record/cronfa42526
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2018-08-16T14:39:02.9105634</datestamp><bib-version>v2</bib-version><id>42526</id><entry>2018-08-02</entry><title>The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.</title><swanseaauthors><author><sid>ec78fc8d2021bf4c1d49c880bed8518f</sid><ORCID>NULL</ORCID><firstname>Benjamin</firstname><surname>Gray</surname><name>Benjamin Gray</name><active>true</active><ethesisStudent>true</ethesisStudent></author></swanseaauthors><date>2018-08-02</date><abstract>RATIONALE: Carbohydrate (CHO) ingestion is a recommended strategy to reduce the rislc of hypoglycaemia during and after exercise in people with type 1 diabetes (TIDM). Emerging research has shown that pre-exercise consumption of the low glycaemic index (GI) CHO isomaltulose increases blood glucose (BG) concentrations less and still protects against hypoglycaemia. However, glycaemic and performance benefits have been under-researched in TIDM following ingestion of CHO with differing GIs. This study compared the metabolic and performance responses to running following ingestion of a low- and high- GI CHO in TIDM. METHODS: With ethical approval, seven individuals (34+/-5 years, 70+/-2 kg, HbA1c 76.6+/-6.5 mmolmol-1) attended the laboratory twice following preliminary testing. Participants were provided with either 0.6 g kg-1 BM of either dextrose (DEX) or isomaltulose (ISO) immediately after a 50% reduced rapid-acting insulin dose. After 2-h rest participants completed a discontinuous incremental treadmill protocol (4-min running: 90 s rest at 31+/-1, 41 +/-2, 53+/-2, 69+/-3 and 80+/-2% VO2 PEAK) before a 10 min performance run. Blood samples were obtained throughout and analysed immediately for BG, lactate and other variables. Data are expressed as mean+/-SEM and analysed using repeated measures ANOVA with statistical significance (P&lt;0.05). RESULTS: BG peak during the 2-h rest was lower after ingestion of ISO (ISO +5.6+/-0.4 vs. DEX +10.3+/-0.7 mmol L-1, P&lt;0.05). BG reductions throughout the submaximal exercise were similar (ISO -1.9+/-0.5 vs. DEX -1.0+/-0.5 mmol L-1, P&gt;0.05) as were changes following the performance bout (ISO +0.7+/-0.4 vs. DEX +0.7+/-0.3 mmol L-1, P&gt;0.05). Lactate was higher in the 2-h rest period in ISO (P&lt;0.05), although there were no differences once exercise began. Distance covered during the performance bout was comparable (ISO 1.14+/-0.09 vs. DEX 1.15+/-0.09 km, P&gt;0.05). CONCLUSION: Pre-exercise consumption of ISO is an effective CHO for those exercising TIDM individuals wishing to improve glycaemic control without loss of exercise performance.</abstract><type>E-Thesis</type><journal/><journalNumber></journalNumber><paginationStart/><paginationEnd/><publisher/><placeOfPublication/><isbnPrint/><issnPrint/><issnElectronic/><keywords>Kinesiology.</keywords><publishedDay>31</publishedDay><publishedMonth>12</publishedMonth><publishedYear>2011</publishedYear><publishedDate>2011-12-31</publishedDate><doi/><url/><notes/><college>COLLEGE NANME</college><department>Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><degreelevel>Master of Philosophy</degreelevel><degreename>M.Phil</degreename><apcterm/><lastEdited>2018-08-16T14:39:02.9105634</lastEdited><Created>2018-08-02T16:24:29.5561973</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Uncategorised</level></path><authors><author><firstname>Benjamin</firstname><surname>Gray</surname><orcid>NULL</orcid><order>1</order></author></authors><documents><document><filename>0042526-02082018162501.pdf</filename><originalFilename>10805275.pdf</originalFilename><uploaded>2018-08-02T16:25:01.4430000</uploaded><type>Output</type><contentLength>5679211</contentLength><contentType>application/pdf</contentType><version>E-Thesis</version><cronfaStatus>true</cronfaStatus><embargoDate>2018-08-02T16:25:01.4430000</embargoDate><copyrightCorrect>false</copyrightCorrect></document></documents><OutputDurs/></rfc1807>
spelling 2018-08-16T14:39:02.9105634 v2 42526 2018-08-02 The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes. ec78fc8d2021bf4c1d49c880bed8518f NULL Benjamin Gray Benjamin Gray true true 2018-08-02 RATIONALE: Carbohydrate (CHO) ingestion is a recommended strategy to reduce the rislc of hypoglycaemia during and after exercise in people with type 1 diabetes (TIDM). Emerging research has shown that pre-exercise consumption of the low glycaemic index (GI) CHO isomaltulose increases blood glucose (BG) concentrations less and still protects against hypoglycaemia. However, glycaemic and performance benefits have been under-researched in TIDM following ingestion of CHO with differing GIs. This study compared the metabolic and performance responses to running following ingestion of a low- and high- GI CHO in TIDM. METHODS: With ethical approval, seven individuals (34+/-5 years, 70+/-2 kg, HbA1c 76.6+/-6.5 mmolmol-1) attended the laboratory twice following preliminary testing. Participants were provided with either 0.6 g kg-1 BM of either dextrose (DEX) or isomaltulose (ISO) immediately after a 50% reduced rapid-acting insulin dose. After 2-h rest participants completed a discontinuous incremental treadmill protocol (4-min running: 90 s rest at 31+/-1, 41 +/-2, 53+/-2, 69+/-3 and 80+/-2% VO2 PEAK) before a 10 min performance run. Blood samples were obtained throughout and analysed immediately for BG, lactate and other variables. Data are expressed as mean+/-SEM and analysed using repeated measures ANOVA with statistical significance (P<0.05). RESULTS: BG peak during the 2-h rest was lower after ingestion of ISO (ISO +5.6+/-0.4 vs. DEX +10.3+/-0.7 mmol L-1, P<0.05). BG reductions throughout the submaximal exercise were similar (ISO -1.9+/-0.5 vs. DEX -1.0+/-0.5 mmol L-1, P>0.05) as were changes following the performance bout (ISO +0.7+/-0.4 vs. DEX +0.7+/-0.3 mmol L-1, P>0.05). Lactate was higher in the 2-h rest period in ISO (P<0.05), although there were no differences once exercise began. Distance covered during the performance bout was comparable (ISO 1.14+/-0.09 vs. DEX 1.15+/-0.09 km, P>0.05). CONCLUSION: Pre-exercise consumption of ISO is an effective CHO for those exercising TIDM individuals wishing to improve glycaemic control without loss of exercise performance. E-Thesis Kinesiology. 31 12 2011 2011-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Master of Philosophy M.Phil 2018-08-16T14:39:02.9105634 2018-08-02T16:24:29.5561973 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised Benjamin Gray NULL 1 0042526-02082018162501.pdf 10805275.pdf 2018-08-02T16:25:01.4430000 Output 5679211 application/pdf E-Thesis true 2018-08-02T16:25:01.4430000 false
title The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
spellingShingle The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
Benjamin Gray
title_short The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
title_full The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
title_fullStr The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
title_full_unstemmed The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
title_sort The influence of high and low glycaemic index meals on the glycaemic, metabolic and performance responses to running in type 1 diabetes.
author_id_str_mv ec78fc8d2021bf4c1d49c880bed8518f
author_id_fullname_str_mv ec78fc8d2021bf4c1d49c880bed8518f_***_Benjamin Gray
author Benjamin Gray
author2 Benjamin Gray
format E-Thesis
publishDate 2011
institution Swansea University
college_str Faculty of Science and Engineering
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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 Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description RATIONALE: Carbohydrate (CHO) ingestion is a recommended strategy to reduce the rislc of hypoglycaemia during and after exercise in people with type 1 diabetes (TIDM). Emerging research has shown that pre-exercise consumption of the low glycaemic index (GI) CHO isomaltulose increases blood glucose (BG) concentrations less and still protects against hypoglycaemia. However, glycaemic and performance benefits have been under-researched in TIDM following ingestion of CHO with differing GIs. This study compared the metabolic and performance responses to running following ingestion of a low- and high- GI CHO in TIDM. METHODS: With ethical approval, seven individuals (34+/-5 years, 70+/-2 kg, HbA1c 76.6+/-6.5 mmolmol-1) attended the laboratory twice following preliminary testing. Participants were provided with either 0.6 g kg-1 BM of either dextrose (DEX) or isomaltulose (ISO) immediately after a 50% reduced rapid-acting insulin dose. After 2-h rest participants completed a discontinuous incremental treadmill protocol (4-min running: 90 s rest at 31+/-1, 41 +/-2, 53+/-2, 69+/-3 and 80+/-2% VO2 PEAK) before a 10 min performance run. Blood samples were obtained throughout and analysed immediately for BG, lactate and other variables. Data are expressed as mean+/-SEM and analysed using repeated measures ANOVA with statistical significance (P<0.05). RESULTS: BG peak during the 2-h rest was lower after ingestion of ISO (ISO +5.6+/-0.4 vs. DEX +10.3+/-0.7 mmol L-1, P<0.05). BG reductions throughout the submaximal exercise were similar (ISO -1.9+/-0.5 vs. DEX -1.0+/-0.5 mmol L-1, P>0.05) as were changes following the performance bout (ISO +0.7+/-0.4 vs. DEX +0.7+/-0.3 mmol L-1, P>0.05). Lactate was higher in the 2-h rest period in ISO (P<0.05), although there were no differences once exercise began. Distance covered during the performance bout was comparable (ISO 1.14+/-0.09 vs. DEX 1.15+/-0.09 km, P>0.05). CONCLUSION: Pre-exercise consumption of ISO is an effective CHO for those exercising TIDM individuals wishing to improve glycaemic control without loss of exercise performance.
published_date 2011-12-31T03:53:08Z
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