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Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes

Othmar Moser, Gerhard Tschakert, Alexander Mueller, Werner Groeschl, Max L. Eckstein, Gerd Koehler, Richard Bracken Orcid Logo, Thomas R. Pieber, Peter Hofmann

Frontiers in Endocrinology, Volume: 9

Swansea University Authors: Othmar Moser, Richard Bracken Orcid Logo

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DOI (Published version): 10.3389/fendo.2018.00585

Abstract

To investigate the heart rate during cardio-pulmonary exercise (CPX) testing in individuals with type 1 diabetes (T1D) compared to healthy (CON) individuals. Fourteen people (seven individuals with T1D and seven CON individuals) performed a CPX test until volitional exhaustion to determine the first...

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Published in: Frontiers in Endocrinology
ISSN: 1664-2392
Published: 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa45475
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spelling 2018-11-06T15:54:18.7869282 v2 45475 2018-11-06 Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes 3b249efea402d5413effa1e67f31bdfa Othmar Moser Othmar Moser true false f5da81cd18adfdedb2ccb845bddc12f7 0000-0002-6986-6449 Richard Bracken Richard Bracken true false 2018-11-06 STSC To investigate the heart rate during cardio-pulmonary exercise (CPX) testing in individuals with type 1 diabetes (T1D) compared to healthy (CON) individuals. Fourteen people (seven individuals with T1D and seven CON individuals) performed a CPX test until volitional exhaustion to determine the first and second lactate turn points (LTP1 and LTP2), ventilatory thresholds (VT1 and VT2), and the heart rate turn point. For these thresholds cardio-respiratory variables and percentages of maximum heart rate, heart rate reserve, maximum oxygen uptake and oxygen uptake reserve, and maximum power output were compared between groups. Additionally, the degree and direction of the deflection of the heart rate to performance curve (kHR) were compared between groups. Individuals with T1D had similar heart rate at LTP1 (mean difference) −11, [(95% confidence interval) −27 to 4 b.min−1], at VT1 (−12, −8 to 33 b.min−1) and at LTP2 (−7, −13 to 26 b.min−1), at VT2 (−7, −13 to 28 b.min−1), and at the heart rate turn point (−5, −14 to 24 b.min−1) (p = 0.22). Heart rate expressed as percentage of maximum heart rate at LTP1, VT1, LTP2, VT2 and the heart rate turn point as well as expressed as percentages of heart rate reserve at LTP2, VT2 and the heart rate turn point was lower in individuals with T1D (p < 0.05). kHR was lower in T1D compared to CON individuals (0.11 ± 0.25 vs. 0.51 ± 0.32, p = 0.02). Our findings demonstrate that there are clear differences in the heart rate response during CPX testing in individuals with T1D compared to CON individuals. We suggest using submaximal markers to prescribe exercise intensity in people with T1D, as the heart rate at thresholds is influenced by kHR. Journal Article Frontiers in Endocrinology 9 1664-2392 2 10 2018 2018-10-02 10.3389/fendo.2018.00585 COLLEGE NANME Sport and Exercise Sciences COLLEGE CODE STSC Swansea University 2018-11-06T15:54:18.7869282 2018-11-06T15:48:09.7685434 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Sport and Exercise Sciences Othmar Moser 1 Gerhard Tschakert 2 Alexander Mueller 3 Werner Groeschl 4 Max L. Eckstein 5 Gerd Koehler 6 Richard Bracken 0000-0002-6986-6449 7 Thomas R. Pieber 8 Peter Hofmann 9 0045475-06112018155107.pdf moser2018(6).pdf 2018-11-06T15:51:07.4070000 Output 578111 application/pdf Version of Record true 2018-11-05T00:00:00.0000000 Released under the terms of a Creative Commons Attribution License (CC-BY). true eng
title Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
spellingShingle Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
Othmar Moser
Richard Bracken
title_short Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
title_full Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
title_fullStr Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
title_full_unstemmed Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
title_sort Different Heart Rate Patterns During Cardio-Pulmonary Exercise (CPX) Testing in Individuals With Type 1 Diabetes
author_id_str_mv 3b249efea402d5413effa1e67f31bdfa
f5da81cd18adfdedb2ccb845bddc12f7
author_id_fullname_str_mv 3b249efea402d5413effa1e67f31bdfa_***_Othmar Moser
f5da81cd18adfdedb2ccb845bddc12f7_***_Richard Bracken
author Othmar Moser
Richard Bracken
author2 Othmar Moser
Gerhard Tschakert
Alexander Mueller
Werner Groeschl
Max L. Eckstein
Gerd Koehler
Richard Bracken
Thomas R. Pieber
Peter Hofmann
format Journal article
container_title Frontiers in Endocrinology
container_volume 9
publishDate 2018
institution Swansea University
issn 1664-2392
doi_str_mv 10.3389/fendo.2018.00585
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
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description To investigate the heart rate during cardio-pulmonary exercise (CPX) testing in individuals with type 1 diabetes (T1D) compared to healthy (CON) individuals. Fourteen people (seven individuals with T1D and seven CON individuals) performed a CPX test until volitional exhaustion to determine the first and second lactate turn points (LTP1 and LTP2), ventilatory thresholds (VT1 and VT2), and the heart rate turn point. For these thresholds cardio-respiratory variables and percentages of maximum heart rate, heart rate reserve, maximum oxygen uptake and oxygen uptake reserve, and maximum power output were compared between groups. Additionally, the degree and direction of the deflection of the heart rate to performance curve (kHR) were compared between groups. Individuals with T1D had similar heart rate at LTP1 (mean difference) −11, [(95% confidence interval) −27 to 4 b.min−1], at VT1 (−12, −8 to 33 b.min−1) and at LTP2 (−7, −13 to 26 b.min−1), at VT2 (−7, −13 to 28 b.min−1), and at the heart rate turn point (−5, −14 to 24 b.min−1) (p = 0.22). Heart rate expressed as percentage of maximum heart rate at LTP1, VT1, LTP2, VT2 and the heart rate turn point as well as expressed as percentages of heart rate reserve at LTP2, VT2 and the heart rate turn point was lower in individuals with T1D (p < 0.05). kHR was lower in T1D compared to CON individuals (0.11 ± 0.25 vs. 0.51 ± 0.32, p = 0.02). Our findings demonstrate that there are clear differences in the heart rate response during CPX testing in individuals with T1D compared to CON individuals. We suggest using submaximal markers to prescribe exercise intensity in people with T1D, as the heart rate at thresholds is influenced by kHR.
published_date 2018-10-02T03:57:17Z
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score 11.013104

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