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

Bracken, Richard

doi:https://doi.org/

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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

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

Swansea University Author: Richard Bracken

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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
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa27009

first_indexed	2016-04-01T01:04:32Z
last_indexed	2019-07-02T13:53:48Z
id	cronfa27009
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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 EAAS 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 Engineering and Applied Sciences School COLLEGE CODE EAAS 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	2016-11-30T07:04:10Z
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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.

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