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Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes

Richard Metcalfe Orcid Logo, Ben Fitzpatrick, Sinead Fitzpatrick, Gary McDermott, Noel Brick, Conor McClean, Gareth W. Davison

European Journal of Applied Physiology

Swansea University Author: Richard Metcalfe Orcid Logo

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DOI (Published version): 10.1007/s00421-018-3980-2

Abstract

PurposeReduced-exertion high-intensity interval training (REHIT) is a genuinely time-efficient exercise intervention that improves aerobic capacity and blood pressure in men with type 2 diabetes. However, the acute effects of REHIT on 24-h glycaemia have not been examined.Methods11 men with type 2 d...

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Published in: European Journal of Applied Physiology
ISSN: 1439-6319 1439-6327
Published: Springer 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa43740
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However, the acute effects of REHIT on 24-h glycaemia have not been examined.Methods11 men with type 2 diabetes (mean&#x2009;&#xB1;&#x2009;SD: age, 52&#x2009;&#xB1;&#x2009;6 years; BMI, 29.7&#x2009;&#xB1;&#x2009;3.1 kg/m2; HbA1c, 7.0&#x2009;&#xB1;&#x2009;0.8%) participated in a randomised, four-trial crossover study, with continual interstitial glucose measurements captured during a 24-h dietary-standardised period following either (1) no exercise (CON); (2) 30 min of continuous exercise (MICT); (3) 10&#x2009;&#xD7;&#x2009;1 min at ~&#x2009;90 HRmax (HIIT; time commitment, ~&#x2009;25 min); and (4) 2&#x2009;&#xD7;&#x2009;20 s &#x2018;all-out&#x2019; sprints (REHIT; time commitment, 10 min).ResultsCompared to CON, mean 24-h glucose was lower following REHIT (mean&#x2009;&#xB1;&#x2009;95%CI: &#x2212;&#x2009;0.58&#x2009;&#xB1;&#x2009;0.41 mmol/L, p&#x2009;=&#x2009;0.008, d&#x2009;=&#x2009;0.55) and tended to be lower with MICT (&#x2212;&#x2009;0.37&#x2009;&#xB1;&#x2009;0.41 mmol/L, p&#x2009;=&#x2009;0.08, d&#x2009;=&#x2009;0.35), but was not significantly altered following HIIT (&#x2212;&#x2009;0.37&#x2009;&#xB1;&#x2009;0.59 mmol/L, p&#x2009;=&#x2009;0.31, d&#x2009;=&#x2009;0.35). This seemed to be largely driven by a lower glycaemic response (area under the curve) to dinner following both REHIT and MICT (&#x2212;&#x2009;11%, p&#x2009;&lt;&#x2009;0.05 and d&#x2009;&gt;&#x2009;0.9 for both) but not HIIT (&#x2212;&#x2009;4%, p&#x2009;=&#x2009;0.22, d&#x2009;=&#x2009;0.38). Time in hyperglycaemia appeared to be reduced with all three exercise conditions compared with CON (REHIT: &#x2212;&#x2009;112&#x2009;&#xB1;&#x2009;63 min, p&#x2009;=&#x2009;0.002, d&#x2009;=&#x2009;0.50; MICT: -115&#x2009;&#xB1;&#x2009;127 min, p&#x2009;=&#x2009;0.08, d&#x2009;=&#x2009;0.50; HIIT &#x2212;&#x2009;125&#x2009;&#xB1;&#x2009;122 min, p&#x2009;=&#x2009;0.04, d&#x2009;=&#x2009;0.54), whilst indices of glycaemic variability were not significantly altered.ConclusionREHIT may offer a genuinely time-efficient exercise option for improving 24-h glycaemia in men with type 2 diabetes and warrants further study.</abstract><type>Journal Article</type><journal>European Journal of Applied Physiology</journal><publisher>Springer</publisher><issnPrint>1439-6319</issnPrint><issnElectronic>1439-6327</issnElectronic><keywords>Exercise, High-intensity interval training, Postprandial glucose, Continuous glucose monitoring, Type 2 diabetes</keywords><publishedDay>31</publishedDay><publishedMonth>8</publishedMonth><publishedYear>2018</publishedYear><publishedDate>2018-08-31</publishedDate><doi>10.1007/s00421-018-3980-2</doi><url/><notes/><college>COLLEGE NANME</college><department>Engineering and Applied Sciences School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>EAAS</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2020-06-17T14:27:06.8296806</lastEdited><Created>2018-09-10T09:18:22.1378457</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>Metcalfe</surname><orcid>0000-0003-0980-2977</orcid><order>1</order></author><author><firstname>Ben</firstname><surname>Fitzpatrick</surname><order>2</order></author><author><firstname>Sinead</firstname><surname>Fitzpatrick</surname><order>3</order></author><author><firstname>Gary</firstname><surname>McDermott</surname><order>4</order></author><author><firstname>Noel</firstname><surname>Brick</surname><order>5</order></author><author><firstname>Conor</firstname><surname>McClean</surname><order>6</order></author><author><firstname>Gareth W.</firstname><surname>Davison</surname><order>7</order></author></authors><documents><document><filename>0043740-10092018091921.pdf</filename><originalFilename>Metcalfe2018_Article_ExtremelyShortDurationInterval.pdf</originalFilename><uploaded>2018-09-10T09:19:21.3730000</uploaded><type>Output</type><contentLength>1295610</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><embargoDate>2018-09-10T00:00:00.0000000</embargoDate><documentNotes>This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0/</licence></document></documents><OutputDurs/></rfc1807>
spelling 2020-06-17T14:27:06.8296806 v2 43740 2018-09-10 Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes 9bb783273dd9d54a2f3f66f75c43abdf 0000-0003-0980-2977 Richard Metcalfe Richard Metcalfe true false 2018-09-10 EAAS PurposeReduced-exertion high-intensity interval training (REHIT) is a genuinely time-efficient exercise intervention that improves aerobic capacity and blood pressure in men with type 2 diabetes. However, the acute effects of REHIT on 24-h glycaemia have not been examined.Methods11 men with type 2 diabetes (mean ± SD: age, 52 ± 6 years; BMI, 29.7 ± 3.1 kg/m2; HbA1c, 7.0 ± 0.8%) participated in a randomised, four-trial crossover study, with continual interstitial glucose measurements captured during a 24-h dietary-standardised period following either (1) no exercise (CON); (2) 30 min of continuous exercise (MICT); (3) 10 × 1 min at ~ 90 HRmax (HIIT; time commitment, ~ 25 min); and (4) 2 × 20 s ‘all-out’ sprints (REHIT; time commitment, 10 min).ResultsCompared to CON, mean 24-h glucose was lower following REHIT (mean ± 95%CI: − 0.58 ± 0.41 mmol/L, p = 0.008, d = 0.55) and tended to be lower with MICT (− 0.37 ± 0.41 mmol/L, p = 0.08, d = 0.35), but was not significantly altered following HIIT (− 0.37 ± 0.59 mmol/L, p = 0.31, d = 0.35). This seemed to be largely driven by a lower glycaemic response (area under the curve) to dinner following both REHIT and MICT (− 11%, p < 0.05 and d > 0.9 for both) but not HIIT (− 4%, p = 0.22, d = 0.38). Time in hyperglycaemia appeared to be reduced with all three exercise conditions compared with CON (REHIT: − 112 ± 63 min, p = 0.002, d = 0.50; MICT: -115 ± 127 min, p = 0.08, d = 0.50; HIIT − 125 ± 122 min, p = 0.04, d = 0.54), whilst indices of glycaemic variability were not significantly altered.ConclusionREHIT may offer a genuinely time-efficient exercise option for improving 24-h glycaemia in men with type 2 diabetes and warrants further study. Journal Article European Journal of Applied Physiology Springer 1439-6319 1439-6327 Exercise, High-intensity interval training, Postprandial glucose, Continuous glucose monitoring, Type 2 diabetes 31 8 2018 2018-08-31 10.1007/s00421-018-3980-2 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2020-06-17T14:27:06.8296806 2018-09-10T09:18:22.1378457 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Richard Metcalfe 0000-0003-0980-2977 1 Ben Fitzpatrick 2 Sinead Fitzpatrick 3 Gary McDermott 4 Noel Brick 5 Conor McClean 6 Gareth W. Davison 7 0043740-10092018091921.pdf Metcalfe2018_Article_ExtremelyShortDurationInterval.pdf 2018-09-10T09:19:21.3730000 Output 1295610 application/pdf Version of Record true 2018-09-10T00:00:00.0000000 This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/ true eng http://creativecommons.org/licenses/by/4.0/
title Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
spellingShingle Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
Richard Metcalfe
title_short Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
title_full Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
title_fullStr Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
title_full_unstemmed Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
title_sort Extremely short duration interval exercise improves 24-h glycaemia in men with type 2 diabetes
author_id_str_mv 9bb783273dd9d54a2f3f66f75c43abdf
author_id_fullname_str_mv 9bb783273dd9d54a2f3f66f75c43abdf_***_Richard Metcalfe
author Richard Metcalfe
author2 Richard Metcalfe
Ben Fitzpatrick
Sinead Fitzpatrick
Gary McDermott
Noel Brick
Conor McClean
Gareth W. Davison
format Journal article
container_title European Journal of Applied Physiology
publishDate 2018
institution Swansea University
issn 1439-6319
1439-6327
doi_str_mv 10.1007/s00421-018-3980-2
publisher Springer
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 1
active_str 0
description PurposeReduced-exertion high-intensity interval training (REHIT) is a genuinely time-efficient exercise intervention that improves aerobic capacity and blood pressure in men with type 2 diabetes. However, the acute effects of REHIT on 24-h glycaemia have not been examined.Methods11 men with type 2 diabetes (mean ± SD: age, 52 ± 6 years; BMI, 29.7 ± 3.1 kg/m2; HbA1c, 7.0 ± 0.8%) participated in a randomised, four-trial crossover study, with continual interstitial glucose measurements captured during a 24-h dietary-standardised period following either (1) no exercise (CON); (2) 30 min of continuous exercise (MICT); (3) 10 × 1 min at ~ 90 HRmax (HIIT; time commitment, ~ 25 min); and (4) 2 × 20 s ‘all-out’ sprints (REHIT; time commitment, 10 min).ResultsCompared to CON, mean 24-h glucose was lower following REHIT (mean ± 95%CI: − 0.58 ± 0.41 mmol/L, p = 0.008, d = 0.55) and tended to be lower with MICT (− 0.37 ± 0.41 mmol/L, p = 0.08, d = 0.35), but was not significantly altered following HIIT (− 0.37 ± 0.59 mmol/L, p = 0.31, d = 0.35). This seemed to be largely driven by a lower glycaemic response (area under the curve) to dinner following both REHIT and MICT (− 11%, p < 0.05 and d > 0.9 for both) but not HIIT (− 4%, p = 0.22, d = 0.38). Time in hyperglycaemia appeared to be reduced with all three exercise conditions compared with CON (REHIT: − 112 ± 63 min, p = 0.002, d = 0.50; MICT: -115 ± 127 min, p = 0.08, d = 0.50; HIIT − 125 ± 122 min, p = 0.04, d = 0.54), whilst indices of glycaemic variability were not significantly altered.ConclusionREHIT may offer a genuinely time-efficient exercise option for improving 24-h glycaemia in men with type 2 diabetes and warrants further study.
published_date 2018-08-31T13:38:49Z
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