Prolonged Exercise Shifts Ventilatory Parameters at the Moderate-to-Heavy Intensity Transition

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aut.relation.endpage315
aut.relation.issue1
aut.relation.journalEuropean Journal of Applied Physiology
aut.relation.startpage309
aut.relation.volume124
dc.contributor.authorStevenson, Julian D
dc.contributor.authorKilding, Andrew E
dc.contributor.authorPlews, Daniel J
dc.contributor.authorMaunder, Ed
dc.date.accessioned2024-02-01T03:44:35Z
dc.date.available2024-02-01T03:44:35Z
dc.date.issued2023-07-27
dc.description.abstractPURPOSE: To quantify the effects of prolonged cycling on the rate of ventilation ([Formula: see text]), frequency of respiration (FR), and tidal volume (VT) associated with the moderate-to-heavy intensity transition. METHODS: Fourteen endurance-trained cyclists and triathletes (one female) completed an assessment of the moderate-to-heavy intensity transition, determined as the first ventilatory threshold (VT1), before (PRE) and after (POST) two hours of moderate-intensity cycling. The power output, [Formula: see text], FR, and VT associated with VT1 were determined PRE and POST. RESULTS: As previously reported, power output at VT1 significantly decreased by ~ 10% from PRE to POST. The [Formula: see text] associated with VT1 was unchanged from PRE to POST (72 ± 12 vs. 69 ± 13 L.min-1, ∆ - 3 ± 5 L.min-1, ∆ - 4 ± 8%, P = 0.075), and relatively consistent (within-subject coefficient of variation, 5.4% [3.7, 8.0%]). The [Formula: see text] associated with VT1 was produced with increased FR (27.6 ± 5.8 vs. 31.9 ± 6.5 breaths.min-1, ∆ 4.3 ± 3.1 breaths.min-1, ∆ 16 ± 11%, P = 0.0002) and decreased VT (2.62 ± 0.43 vs. 2.19 ± 0.36 L.breath-1, ∆ - 0.44 ± 0.22 L.breath-1, ∆ - 16 ± 7%, P = 0.0002) in POST. CONCLUSION: These data suggest prolonged exercise shifts ventilatory parameters at the moderate-to-heavy intensity transition, but [Formula: see text] remains stable. Real-time monitoring of [Formula: see text] may be a useful means of assessing proximity to the moderate-to-heavy intensity transition during prolonged exercise and is worthy of further research.
dc.identifier.citationEuropean Journal of Applied Physiology, ISSN: 1439-6319 (Print); 1439-6319 (Online), Springer, 124(1), 309-315. doi: 10.1007/s00421-023-05285-2
dc.identifier.doi10.1007/s00421-023-05285-2
dc.identifier.issn1439-6319
dc.identifier.issn1439-6319
dc.identifier.urihttp://hdl.handle.net/10292/17179
dc.languageeng
dc.publisherSpringer
dc.relation.urihttps://link.springer.com/article/10.1007/s00421-023-05285-2
dc.rightsOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.accessrightsOpenAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCycling
dc.subjectDurability
dc.subjectDuration
dc.subjectExercise
dc.subjectFatigue resistance
dc.subjectThresholds
dc.subjectCycling
dc.subjectDurability
dc.subjectDuration
dc.subjectExercise
dc.subjectFatigue resistance
dc.subjectThresholds
dc.subject42 Health Sciences
dc.subject4207 Sports Science and Exercise
dc.subjectCancer
dc.subject1106 Human Movement and Sports Sciences
dc.subjectSport Sciences
dc.subject3202 Clinical sciences
dc.subject3208 Medical physiology
dc.subject4207 Sports science and exercise
dc.subject.meshHumans
dc.subject.meshFemale
dc.subject.meshExercise
dc.subject.meshRespiration
dc.subject.meshLung
dc.subject.meshTidal Volume
dc.subject.meshEndurance Training
dc.subject.meshExercise Test
dc.subject.meshOxygen Consumption
dc.subject.meshLung
dc.subject.meshHumans
dc.subject.meshExercise Test
dc.subject.meshTidal Volume
dc.subject.meshExercise
dc.subject.meshOxygen Consumption
dc.subject.meshRespiration
dc.subject.meshFemale
dc.subject.meshEndurance Training
dc.subject.meshHumans
dc.subject.meshFemale
dc.subject.meshExercise
dc.subject.meshRespiration
dc.subject.meshLung
dc.subject.meshTidal Volume
dc.subject.meshEndurance Training
dc.subject.meshExercise Test
dc.subject.meshOxygen Consumption
dc.titleProlonged Exercise Shifts Ventilatory Parameters at the Moderate-to-Heavy Intensity Transition
dc.typeJournal Article
pubs.elements-id518884
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