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Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals

Richard Bracken Orcid Logo

British Journal of Nutrition, Volume: 111, Issue: 07, Pages: 1231 - 1238

Swansea University Author: Richard Bracken Orcid Logo

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DOI (Published version): 10.1017/S0007114513003619

Abstract

Optimal carbohydrate ingestion strategies as nutritional therapy for glycogen storage diseases have not been fully realised, in part, due to difficulties in accessing patient cohorts, alongside limited details on metabolic effects and insight into working mechanisms. The present pilot study compared...

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Published in: British Journal of Nutrition
ISSN: 1475-2662
Published: 2014
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URI: https://cronfa.swan.ac.uk/Record/cronfa27018
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spelling 2017-03-07T15:37:53.7200179 v2 27018 2016-03-31 Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals f5da81cd18adfdedb2ccb845bddc12f7 0000-0002-6986-6449 Richard Bracken Richard Bracken true false 2016-03-31 STSC Optimal carbohydrate ingestion strategies as nutritional therapy for glycogen storage diseases have not been fully realised, in part, due to difficulties in accessing patient cohorts, alongside limited details on metabolic effects and insight into working mechanisms. The present pilot study compared glycaemic and fuel oxidation responses following the ingestion of a hydrothermally processed maize starch (HPMS), an uncooked maize starch (UCMS) and maize-derived dextrose (DEX) at rest and during and after exercise in healthy individuals. A total of eight participants (seven males and one female; body mass (BM) 76.9 (SEM 5.2) kg) visited the laboratory on three occasions. During each visit, the participants ingested 1 g/kg BM of HPMS (Glycosade™), UCMS (Argo™) or DEX as a 10% solution. Blood samples were collected over a 2 h rest period and for 2 h after a 60 min treadmill run at 65 (SEM 1) % VO(2max). Mean values with their standard errors were analysed using repeated-measures ANOVA. Blood glucose concentrations under the HPMS condition were significantly elevated from resting values at 90 min (P=0.02) after ingestion compared with those under the UCMS (60 min; P=0.02) and DEX (30 min; P=0.001) conditions. The rate of carbohydrate use during exercise after the ingestion of HPMS was 7-9% lower compared with that after the ingestion of either DEX or UCMS (P<0.05). The total amount of lipids oxidised during exercise was greater under the HPMS condition (26.2 (SEM 2.8) g) compared with that oxidised under the UCMS (19.6 (SEM 2.7) g; P=0.04) or DEX (20.6 (SEM 3.6) g; P=0.07) condition. The results demonstrated a glycaemic advantage to the ingestion of HPMS over that of UCMS or DEX. Carbohydrate oxidation was reduced after the ingestion of HPMS compared with that after the ingestion of UCMS or DEX, with a corresponding higher rate of endogenous lipid use during exercise. Journal Article British Journal of Nutrition 111 07 1231 1238 1475-2662 31 12 2014 2014-12-31 10.1017/S0007114513003619 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2017-03-07T15:37:53.7200179 2016-03-31T21:00:16.6268001 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 Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
spellingShingle Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
Richard Bracken
title_short Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
title_full Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
title_fullStr Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
title_full_unstemmed Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
title_sort Comparison of the metabolic responses to ingestion of hydrothermally processed high-amylopectin content maize, uncooked maize starch or dextrose in healthy individuals
author_id_str_mv f5da81cd18adfdedb2ccb845bddc12f7
author_id_fullname_str_mv f5da81cd18adfdedb2ccb845bddc12f7_***_Richard Bracken
author Richard Bracken
author2 Richard Bracken
format Journal article
container_title British Journal of Nutrition
container_volume 111
container_issue 07
container_start_page 1231
publishDate 2014
institution Swansea University
issn 1475-2662
doi_str_mv 10.1017/S0007114513003619
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 0
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description Optimal carbohydrate ingestion strategies as nutritional therapy for glycogen storage diseases have not been fully realised, in part, due to difficulties in accessing patient cohorts, alongside limited details on metabolic effects and insight into working mechanisms. The present pilot study compared glycaemic and fuel oxidation responses following the ingestion of a hydrothermally processed maize starch (HPMS), an uncooked maize starch (UCMS) and maize-derived dextrose (DEX) at rest and during and after exercise in healthy individuals. A total of eight participants (seven males and one female; body mass (BM) 76.9 (SEM 5.2) kg) visited the laboratory on three occasions. During each visit, the participants ingested 1 g/kg BM of HPMS (Glycosade™), UCMS (Argo™) or DEX as a 10% solution. Blood samples were collected over a 2 h rest period and for 2 h after a 60 min treadmill run at 65 (SEM 1) % VO(2max). Mean values with their standard errors were analysed using repeated-measures ANOVA. Blood glucose concentrations under the HPMS condition were significantly elevated from resting values at 90 min (P=0.02) after ingestion compared with those under the UCMS (60 min; P=0.02) and DEX (30 min; P=0.001) conditions. The rate of carbohydrate use during exercise after the ingestion of HPMS was 7-9% lower compared with that after the ingestion of either DEX or UCMS (P<0.05). The total amount of lipids oxidised during exercise was greater under the HPMS condition (26.2 (SEM 2.8) g) compared with that oxidised under the UCMS (19.6 (SEM 2.7) g; P=0.04) or DEX (20.6 (SEM 3.6) g; P=0.07) condition. The results demonstrated a glycaemic advantage to the ingestion of HPMS over that of UCMS or DEX. Carbohydrate oxidation was reduced after the ingestion of HPMS compared with that after the ingestion of UCMS or DEX, with a corresponding higher rate of endogenous lipid use during exercise.
published_date 2014-12-31T03:32:39Z
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