Critical power is a key threshold determining the magnitude of post-exercise hypotension in non-hypertensive young males.

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dc.citation.issue11
dc.citation.volume108
dc.contributor.authorLei T-H
dc.contributor.authorWang I-L
dc.contributor.authorChen Y-M
dc.contributor.authorLiu X-H
dc.contributor.authorFujii N
dc.contributor.authorKoga S
dc.contributor.authorPerry B
dc.contributor.authorMundel T
dc.contributor.authorWang F
dc.contributor.authorCao Y
dc.contributor.authorDobashi K
dc.contributor.authorKondo N
dc.contributor.authorLi H-Y
dc.contributor.authorGoulding RP
dc.contributor.editorPoole D
dc.coverage.spatialEngland
dc.date.accessioned2024-06-17T02:52:50Z
dc.date.available2024-06-17T02:52:50Z
dc.date.issued2023-09-15
dc.description.abstractThe effect of different exercise intensities on the magnitude of post-exercise hypotension has not been rigorously clarified with respect to the metabolic thresholds that partition discrete exercise intensity domains (i.e., critical power and the gas exchange threshold (GET)). We hypothesized that the magnitude of post-exercise hypotension would be greater following isocaloric exercise performed above versus below critical power. Twelve non-hypertensive men completed a ramp incremental exercise test to determine maximal oxygen uptake and the GET, followed by five exhaustive constant load trials to determine critical power and W' (work available above critical power). Subsequently, criterion trials were performed at four discrete intensities matched for total work performed (i.e., isocaloric) to determine the impact of exercise intensity on post-exercise hypotension: 10% above critical power (10% > CP), 10% below critical power (10% < CP), 10% above GET (10% > GET) and 10% below GET (10% < GET). The post-exercise decrease (i.e., the minimum post-exercise values) in mean arterial (10% > CP: -12.7 ± 8.3 vs. 10% < CP: v3.5 ± 2.9 mmHg), diastolic (10% > CP: -9.6 ± 9.8 vs. 10% < CP: -1.4 ± 5.0 mmHg) and systolic (10% > CP: -23.8 ± 7.0 vs. 10% < CP: -9.9 ± 4.3 mmHg) blood pressures were greater following exercise performed 10% > CP compared to all other trials (all P < 0.01). No effects of exercise intensity on the magnitude of post-exercise hypotension were observed during exercise performed below critical power (all P > 0.05). Critical power represents a threshold above which the magnitude of post-exercise hypotension is greatly augmented. NEW FINDINGS: What is the central questions of this study? What is the influence of exercise intensity on the magnitude of post-exercise hypotension with respect to metabolic thresholds? What is the main finding and its importance? The magnitude of post-exercise hypotension is greatly increased following exercise performed above critical power. However, below critical power, there was no clear effect of exercise intensity on the magnitude of post-exercise hypotension.
dc.description.confidentialfalse
dc.edition.editionNov 2023
dc.format.pagination1409-1421
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/37712355
dc.identifier.citationLei T-H, Wang I-L, Chen Y-M, Liu X-H, Fujii N, Koga S, Perry B, Mundel T, Wang F, Cao Y, Dobashi K, Kondo N, Li H-Y, Goulding RP. (2023). Critical power is a key threshold determining the magnitude of post-exercise hypotension in non-hypertensive young males.. Exp Physiol. 108. 11. (pp. 1409-1421).
dc.identifier.doi10.1113/EP091429
dc.identifier.eissn1469-445X
dc.identifier.elements-typejournal-article
dc.identifier.issn0958-0670
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/69868
dc.languageeng
dc.publisherWiley & Sons Ltd on behalf of The Physiological Society
dc.publisher.urihttps://physoc.onlinelibrary.wiley.com/doi/10.1113/EP091429
dc.relation.isPartOfExp Physiol
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectcardiovascular health
dc.subjectcritical power
dc.subjectexercise intensity
dc.subjectpost-exercise baroreflex
dc.subjectMale
dc.subjectHumans
dc.subjectPost-Exercise Hypotension
dc.subjectExercise Tolerance
dc.subjectExercise
dc.subjectOxygen Consumption
dc.subjectExercise Test
dc.titleCritical power is a key threshold determining the magnitude of post-exercise hypotension in non-hypertensive young males.
dc.typeJournal article
pubs.elements-id480476
pubs.organisational-groupCollege of Health
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