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Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance
European Journal of Applied Physiology, Volume: 124, Pages: 2427 - 2438
Swansea University Author: Mark Waldron
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DOI (Published version): 10.1007/s00421-024-05459-6
Abstract
Purpose: Power output at the moderate-to-heavy intensity transition decreases during prolonged exercise. Resilience to this has been termed ‘durability’. The relationship between durability and performance, and the mechanistic determinants of durability, are not well-characterised. The purpose of th...
Published in: | European Journal of Applied Physiology |
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ISSN: | 1439-6319 1439-6327 |
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Springer Science and Business Media LLC
2024
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URI: | https://cronfa.swan.ac.uk/Record/cronfa65820 |
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The purpose of this study was to assess the relationship between durability and the effect of prolonged exercise on severe-intensity performance, and explore intramuscular correlates of durability. Methods: On separate days, thirteen well-trained cyclists and triathletes (V̇O2peak, 57.3 ± 4.8 mL.kg-1.min-1; training volume, 12 ± 2.1 h.week-1) undertook an incremental test and 5-min time trial (TT) to determine power output at the first ventilatory threshold (VT1) and severe-intensity performance, with and without 150-min of prior moderate-intensity cycling. A single resting vastus lateralis microbiopsy was obtained.Results: Prolonged exercise reduced power output at VT1 (211 ± 40 vs. 198 ± 39 W, ∆ -13 ± 16 W, ∆ -6 ± 7%, P = 0.013) and 5-min TT performance (333 ± 75 vs. 302 ± 63 W, ∆ -31 ± 41 W, ∆ -9 ± 10%, P = 0.017). The reduction in 5-min TT performance was significantly associated with durability of VT1 (rs = 0.719, P = 0.007). Durability of VT1 was not related to vastus lateralis carnosine content, citrate synthase activity, or complex l activity (P > 0.05). Conclusion: These data provide the first direct support that durability of the moderate-to-heavy intensity transition is an important performance parameter. We did not find relationships between durability and vastus lateralis carnosine content, citrate synthase activity, or complex l activity.</abstract><type>Journal Article</type><journal>European Journal of Applied Physiology</journal><volume>124</volume><journalNumber/><paginationStart>2427</paginationStart><paginationEnd>2438</paginationEnd><publisher>Springer Science and Business Media LLC</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1439-6319</issnPrint><issnElectronic>1439-6327</issnElectronic><keywords>Durability, exercise, muscle</keywords><publishedDay>28</publishedDay><publishedMonth>3</publishedMonth><publishedYear>2024</publishedYear><publishedDate>2024-03-28</publishedDate><doi>10.1007/s00421-024-05459-6</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>Another institution paid the OA fee</apcterm><funders>Open Access funding enabled and organized by CAUL and its Member Institutions. 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2024-10-08T11:12:22.4589820 v2 65820 2024-03-12 Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance 70db7c6c54d46f5e70b39e5ae0a056fa 0000-0002-2720-4615 Mark Waldron Mark Waldron true false 2024-03-12 EAAS Purpose: Power output at the moderate-to-heavy intensity transition decreases during prolonged exercise. Resilience to this has been termed ‘durability’. The relationship between durability and performance, and the mechanistic determinants of durability, are not well-characterised. The purpose of this study was to assess the relationship between durability and the effect of prolonged exercise on severe-intensity performance, and explore intramuscular correlates of durability. Methods: On separate days, thirteen well-trained cyclists and triathletes (V̇O2peak, 57.3 ± 4.8 mL.kg-1.min-1; training volume, 12 ± 2.1 h.week-1) undertook an incremental test and 5-min time trial (TT) to determine power output at the first ventilatory threshold (VT1) and severe-intensity performance, with and without 150-min of prior moderate-intensity cycling. A single resting vastus lateralis microbiopsy was obtained.Results: Prolonged exercise reduced power output at VT1 (211 ± 40 vs. 198 ± 39 W, ∆ -13 ± 16 W, ∆ -6 ± 7%, P = 0.013) and 5-min TT performance (333 ± 75 vs. 302 ± 63 W, ∆ -31 ± 41 W, ∆ -9 ± 10%, P = 0.017). The reduction in 5-min TT performance was significantly associated with durability of VT1 (rs = 0.719, P = 0.007). Durability of VT1 was not related to vastus lateralis carnosine content, citrate synthase activity, or complex l activity (P > 0.05). Conclusion: These data provide the first direct support that durability of the moderate-to-heavy intensity transition is an important performance parameter. We did not find relationships between durability and vastus lateralis carnosine content, citrate synthase activity, or complex l activity. Journal Article European Journal of Applied Physiology 124 2427 2438 Springer Science and Business Media LLC 1439-6319 1439-6327 Durability, exercise, muscle 28 3 2024 2024-03-28 10.1007/s00421-024-05459-6 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Another institution paid the OA fee Open Access funding enabled and organized by CAUL and its Member Institutions. This work was supported by an award from the Faculty of Health and Environmental Sciences Research Development Fund, Auckland University of Technology. 2024-10-08T11:12:22.4589820 2024-03-12T10:17:57.0879558 Faculty of Science and Engineering School of Engineering and Applied Sciences - Sport and Exercise Sciences Kate Hamilton 1 Andrew E. Kilding 0000-0002-5334-8831 2 Daniel J. Plews 3 Mathew J. Mildenhall 4 Mark Waldron 0000-0002-2720-4615 5 Thanchanok Charoensap 6 Tobias H. Cox 7 Matthew J. Brick 0000-0002-1354-909x 8 Warren B. Leigh 0000-0002-9334-7761 9 Ed Maunder 0000-0002-2329-959x 10 65820__30125__1548fcdd3f1f44fd8e02f120fcbd5e02.pdf 65820.VoR.pdf 2024-04-23T14:23:49.7749427 Output 1335346 application/pdf Version of Record true © The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License. true eng http://creativecommons.org/licenses/by/4.0/ |
title |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
spellingShingle |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance Mark Waldron |
title_short |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
title_full |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
title_fullStr |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
title_full_unstemmed |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
title_sort |
Durability of the moderate-to-heavy-intensity transition is related to the effects of prolonged exercise on severe-intensity performance |
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70db7c6c54d46f5e70b39e5ae0a056fa |
author_id_fullname_str_mv |
70db7c6c54d46f5e70b39e5ae0a056fa_***_Mark Waldron |
author |
Mark Waldron |
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Kate Hamilton Andrew E. Kilding Daniel J. Plews Mathew J. Mildenhall Mark Waldron Thanchanok Charoensap Tobias H. Cox Matthew J. Brick Warren B. Leigh Ed Maunder |
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European Journal of Applied Physiology |
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124 |
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2427 |
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10.1007/s00421-024-05459-6 |
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Springer Science and Business Media LLC |
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Faculty of Science and Engineering |
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School of Engineering and Applied Sciences - Sport and Exercise Sciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Sport and Exercise Sciences |
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Purpose: Power output at the moderate-to-heavy intensity transition decreases during prolonged exercise. Resilience to this has been termed ‘durability’. The relationship between durability and performance, and the mechanistic determinants of durability, are not well-characterised. The purpose of this study was to assess the relationship between durability and the effect of prolonged exercise on severe-intensity performance, and explore intramuscular correlates of durability. Methods: On separate days, thirteen well-trained cyclists and triathletes (V̇O2peak, 57.3 ± 4.8 mL.kg-1.min-1; training volume, 12 ± 2.1 h.week-1) undertook an incremental test and 5-min time trial (TT) to determine power output at the first ventilatory threshold (VT1) and severe-intensity performance, with and without 150-min of prior moderate-intensity cycling. A single resting vastus lateralis microbiopsy was obtained.Results: Prolonged exercise reduced power output at VT1 (211 ± 40 vs. 198 ± 39 W, ∆ -13 ± 16 W, ∆ -6 ± 7%, P = 0.013) and 5-min TT performance (333 ± 75 vs. 302 ± 63 W, ∆ -31 ± 41 W, ∆ -9 ± 10%, P = 0.017). The reduction in 5-min TT performance was significantly associated with durability of VT1 (rs = 0.719, P = 0.007). Durability of VT1 was not related to vastus lateralis carnosine content, citrate synthase activity, or complex l activity (P > 0.05). Conclusion: These data provide the first direct support that durability of the moderate-to-heavy intensity transition is an important performance parameter. We did not find relationships between durability and vastus lateralis carnosine content, citrate synthase activity, or complex l activity. |
published_date |
2024-03-28T14:31:40Z |
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1821325656651202560 |
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11.048042 |