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Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race

Sam N. Scott, Mark P. Christiansen, Federico Y. Fontana, Christoph Stettler, Richard Bracken Orcid Logo, Charlotte A. Hayes, Miles Fisher, Bruce Bode, Peter H. Lagrou, Phil Southerland, Michael C. Riddell

Diabetes Care, Volume: 43, Issue: 5, Pages: 1142 - 1145

Swansea University Author: Richard Bracken Orcid Logo

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DOI (Published version): 10.2337/dc19-2302

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OBJECTIVE To investigate factors related to glycemic management among members of a professional cycling team with type 1 diabetes over a 7-day Union Cycliste Internationale World Tour stage race.RESEARCH DESIGN AND METHODS An observational evaluation of possible factors related to glycemic managemen...

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Published in: Diabetes Care
ISSN: 0149-5992 1935-5548
Published: American Diabetes Association 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55188
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fullrecord <?xml version="1.0"?><rfc1807><datestamp>2020-11-05T15:27:11.8167569</datestamp><bib-version>v2</bib-version><id>55188</id><entry>2020-09-16</entry><title>Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race</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></swanseaauthors><date>2020-09-16</date><deptcode>STSC</deptcode><abstract>OBJECTIVE To investigate factors related to glycemic management among members of a professional cycling team with type 1 diabetes over a 7-day Union Cycliste Internationale World Tour stage race.RESEARCH DESIGN AND METHODS An observational evaluation of possible factors related to glycemic management and performance in six male professional cyclists with type 1 diabetes (HbA1c 6.4 &#xB1; 0.6%) during the 2019 Tour of California.RESULTS In-ride time spent in euglycemia (3.9&#x2013;10.0 mmol/L glucose) was 63 &#xB1; 11%, with a low percentage of time spent in level 1 (3.0&#x2013;3.9 mmol/L; 0 &#xB1; 1% of time) and level 2 (&lt;3.0 mmol/L; 0 &#xB1; 0% of time) hypoglycemia over the 7-day race. Riders spent 25 &#xB1; 9% of time in level 1 (10.1&#x2013;13.9 mmol/L) and 11 &#xB1; 9% in level 2 (&gt;13.9 mmol/L) hyperglycemia during races. Bolus insulin use was uncommon during races, despite high carbohydrate intake (76 &#xB1; 23 g &#x22C5; h&#x2212;1). Overnight, the riders spent progressively more time in hypoglycemia from day 1 (6 &#xB1; 12% in level 1 and 0 &#xB1; 0% in level 2) to day 7 (12 &#xB1; 12% in level 1 and 2 &#xB1; 4% in level 2) (&#x3C7;2[1] &gt; 4.78, P &lt; 0.05).CONCLUSIONS Professional cyclists with type 1 diabetes have excellent in-race glycemia, but significant hypoglycemia during recovery overnight, throughout a 7-day stage race.</abstract><type>Journal Article</type><journal>Diabetes Care</journal><volume>43</volume><journalNumber>5</journalNumber><paginationStart>1142</paginationStart><paginationEnd>1145</paginationEnd><publisher>American Diabetes Association</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>0149-5992</issnPrint><issnElectronic>1935-5548</issnElectronic><keywords/><publishedDay>1</publishedDay><publishedMonth>5</publishedMonth><publishedYear>2020</publishedYear><publishedDate>2020-05-01</publishedDate><doi>10.2337/dc19-2302</doi><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>2020-11-05T15:27:11.8167569</lastEdited><Created>2020-09-16T15:43:16.7715456</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>Sam N.</firstname><surname>Scott</surname><order>1</order></author><author><firstname>Mark P.</firstname><surname>Christiansen</surname><order>2</order></author><author><firstname>Federico Y.</firstname><surname>Fontana</surname><order>3</order></author><author><firstname>Christoph</firstname><surname>Stettler</surname><order>4</order></author><author><firstname>Richard</firstname><surname>Bracken</surname><orcid>0000-0002-6986-6449</orcid><order>5</order></author><author><firstname>Charlotte A.</firstname><surname>Hayes</surname><order>6</order></author><author><firstname>Miles</firstname><surname>Fisher</surname><order>7</order></author><author><firstname>Bruce</firstname><surname>Bode</surname><order>8</order></author><author><firstname>Peter H.</firstname><surname>Lagrou</surname><order>9</order></author><author><firstname>Phil</firstname><surname>Southerland</surname><order>10</order></author><author><firstname>Michael C.</firstname><surname>Riddell</surname><order>11</order></author></authors><documents/><OutputDurs/></rfc1807>
spelling 2020-11-05T15:27:11.8167569 v2 55188 2020-09-16 Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race f5da81cd18adfdedb2ccb845bddc12f7 0000-0002-6986-6449 Richard Bracken Richard Bracken true false 2020-09-16 STSC OBJECTIVE To investigate factors related to glycemic management among members of a professional cycling team with type 1 diabetes over a 7-day Union Cycliste Internationale World Tour stage race.RESEARCH DESIGN AND METHODS An observational evaluation of possible factors related to glycemic management and performance in six male professional cyclists with type 1 diabetes (HbA1c 6.4 ± 0.6%) during the 2019 Tour of California.RESULTS In-ride time spent in euglycemia (3.9–10.0 mmol/L glucose) was 63 ± 11%, with a low percentage of time spent in level 1 (3.0–3.9 mmol/L; 0 ± 1% of time) and level 2 (<3.0 mmol/L; 0 ± 0% of time) hypoglycemia over the 7-day race. Riders spent 25 ± 9% of time in level 1 (10.1–13.9 mmol/L) and 11 ± 9% in level 2 (>13.9 mmol/L) hyperglycemia during races. Bolus insulin use was uncommon during races, despite high carbohydrate intake (76 ± 23 g ⋅ h−1). Overnight, the riders spent progressively more time in hypoglycemia from day 1 (6 ± 12% in level 1 and 0 ± 0% in level 2) to day 7 (12 ± 12% in level 1 and 2 ± 4% in level 2) (χ2[1] > 4.78, P < 0.05).CONCLUSIONS Professional cyclists with type 1 diabetes have excellent in-race glycemia, but significant hypoglycemia during recovery overnight, throughout a 7-day stage race. Journal Article Diabetes Care 43 5 1142 1145 American Diabetes Association 0149-5992 1935-5548 1 5 2020 2020-05-01 10.2337/dc19-2302 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2020-11-05T15:27:11.8167569 2020-09-16T15:43:16.7715456 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Sam N. Scott 1 Mark P. Christiansen 2 Federico Y. Fontana 3 Christoph Stettler 4 Richard Bracken 0000-0002-6986-6449 5 Charlotte A. Hayes 6 Miles Fisher 7 Bruce Bode 8 Peter H. Lagrou 9 Phil Southerland 10 Michael C. Riddell 11
title Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
spellingShingle Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
Richard Bracken
title_short Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
title_full Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
title_fullStr Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
title_full_unstemmed Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
title_sort Evaluation of Factors Related to Glycemic Management in Professional Cyclists With Type 1 Diabetes Over a 7-Day Stage Race
author_id_str_mv f5da81cd18adfdedb2ccb845bddc12f7
author_id_fullname_str_mv f5da81cd18adfdedb2ccb845bddc12f7_***_Richard Bracken
author Richard Bracken
author2 Sam N. Scott
Mark P. Christiansen
Federico Y. Fontana
Christoph Stettler
Richard Bracken
Charlotte A. Hayes
Miles Fisher
Bruce Bode
Peter H. Lagrou
Phil Southerland
Michael C. Riddell
format Journal article
container_title Diabetes Care
container_volume 43
container_issue 5
container_start_page 1142
publishDate 2020
institution Swansea University
issn 0149-5992
1935-5548
doi_str_mv 10.2337/dc19-2302
publisher American Diabetes Association
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
active_str 0
description OBJECTIVE To investigate factors related to glycemic management among members of a professional cycling team with type 1 diabetes over a 7-day Union Cycliste Internationale World Tour stage race.RESEARCH DESIGN AND METHODS An observational evaluation of possible factors related to glycemic management and performance in six male professional cyclists with type 1 diabetes (HbA1c 6.4 ± 0.6%) during the 2019 Tour of California.RESULTS In-ride time spent in euglycemia (3.9–10.0 mmol/L glucose) was 63 ± 11%, with a low percentage of time spent in level 1 (3.0–3.9 mmol/L; 0 ± 1% of time) and level 2 (<3.0 mmol/L; 0 ± 0% of time) hypoglycemia over the 7-day race. Riders spent 25 ± 9% of time in level 1 (10.1–13.9 mmol/L) and 11 ± 9% in level 2 (>13.9 mmol/L) hyperglycemia during races. Bolus insulin use was uncommon during races, despite high carbohydrate intake (76 ± 23 g ⋅ h−1). Overnight, the riders spent progressively more time in hypoglycemia from day 1 (6 ± 12% in level 1 and 0 ± 0% in level 2) to day 7 (12 ± 12% in level 1 and 2 ± 4% in level 2) (χ2[1] > 4.78, P < 0.05).CONCLUSIONS Professional cyclists with type 1 diabetes have excellent in-race glycemia, but significant hypoglycemia during recovery overnight, throughout a 7-day stage race.
published_date 2020-05-01T04:09:13Z
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score 11.01306

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