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Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men

We previously reported subtle dynamic cerebral autoregulation (dCA) alterations following 6 weeks of high‐intensity interval training (HIIT) to exhaustion using transfer function analysis (TFA) on forced mean arterial pressure (MAP) oscillations in young endurance‐trained men. However, accumulating...

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Autores principales: Abbariki, Faezeh, Roy, Marc‐Antoine, Labrecque, Lawrence, Drapeau, Audrey, Imhoff, Sarah, Smirl, Jonathan D., Brassard, Patrice
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9277516/
https://www.ncbi.nlm.nih.gov/pubmed/35822439
http://dx.doi.org/10.14814/phy2.15384
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author Abbariki, Faezeh
Roy, Marc‐Antoine
Labrecque, Lawrence
Drapeau, Audrey
Imhoff, Sarah
Smirl, Jonathan D.
Brassard, Patrice
author_facet Abbariki, Faezeh
Roy, Marc‐Antoine
Labrecque, Lawrence
Drapeau, Audrey
Imhoff, Sarah
Smirl, Jonathan D.
Brassard, Patrice
author_sort Abbariki, Faezeh
collection PubMed
description We previously reported subtle dynamic cerebral autoregulation (dCA) alterations following 6 weeks of high‐intensity interval training (HIIT) to exhaustion using transfer function analysis (TFA) on forced mean arterial pressure (MAP) oscillations in young endurance‐trained men. However, accumulating evidence suggests the cerebrovasculature better buffers cerebral blood flow changes when MAP acutely increases compared to when MAP acutely decreases. Whether HIIT affects the directional sensitivity of the cerebral pressure‐flow relationship in these athletes is unknown. In 18 endurance‐trained men (age: 27 ± 6 years, VO(2)max: 55.5 ± 4.7 ml·kg(−1)·min(−1)), we evaluated the impact of 6 weeks of HIIT to exhaustion on dCA directionality using induced MAP oscillations during 5‐min 0.05 and 0.10 Hz repeated squat‐stands. We calculated time‐adjusted changes in middle cerebral artery mean blood velocity (MCAv) per change in MAP (ΔMCAv(T)/ΔMAP(T)) for each squat transition. Then, we compared averaged ΔMCAv(T)/ΔMAP(T) during MAP increases and decreases. Before HIIT, ΔMCAv(T)/ΔMAP(T) was comparable between MAP increases and decreases during 0.05 Hz repeated squat‐stands (p = 0.518). During 0.10 Hz repeated squat‐stands, ΔMCAv(T)/ΔMAP(T) was lower during MAP increases versus decreases (0.87 ± 0.17 vs. 0.99 ± 0.23 cm·s(−1)·mmHg(−1), p = 0.030). Following HIIT, ΔMCAv(T)/ΔMAP(T) was superior during MAP increases over decreases during 0.05 Hz repeated squat‐stands (0.97 ± 0.38 vs. 0.77 ± 0.35 cm·s(−1)·mmHg(−1), p = 0.002). During 0.10 Hz repeated squat‐stands, dCA directional sensitivity disappeared (p = 0.359). These results suggest the potential for HIIT to influence the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men.
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spelling pubmed-92775162022-07-15 Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men Abbariki, Faezeh Roy, Marc‐Antoine Labrecque, Lawrence Drapeau, Audrey Imhoff, Sarah Smirl, Jonathan D. Brassard, Patrice Physiol Rep Original Articles We previously reported subtle dynamic cerebral autoregulation (dCA) alterations following 6 weeks of high‐intensity interval training (HIIT) to exhaustion using transfer function analysis (TFA) on forced mean arterial pressure (MAP) oscillations in young endurance‐trained men. However, accumulating evidence suggests the cerebrovasculature better buffers cerebral blood flow changes when MAP acutely increases compared to when MAP acutely decreases. Whether HIIT affects the directional sensitivity of the cerebral pressure‐flow relationship in these athletes is unknown. In 18 endurance‐trained men (age: 27 ± 6 years, VO(2)max: 55.5 ± 4.7 ml·kg(−1)·min(−1)), we evaluated the impact of 6 weeks of HIIT to exhaustion on dCA directionality using induced MAP oscillations during 5‐min 0.05 and 0.10 Hz repeated squat‐stands. We calculated time‐adjusted changes in middle cerebral artery mean blood velocity (MCAv) per change in MAP (ΔMCAv(T)/ΔMAP(T)) for each squat transition. Then, we compared averaged ΔMCAv(T)/ΔMAP(T) during MAP increases and decreases. Before HIIT, ΔMCAv(T)/ΔMAP(T) was comparable between MAP increases and decreases during 0.05 Hz repeated squat‐stands (p = 0.518). During 0.10 Hz repeated squat‐stands, ΔMCAv(T)/ΔMAP(T) was lower during MAP increases versus decreases (0.87 ± 0.17 vs. 0.99 ± 0.23 cm·s(−1)·mmHg(−1), p = 0.030). Following HIIT, ΔMCAv(T)/ΔMAP(T) was superior during MAP increases over decreases during 0.05 Hz repeated squat‐stands (0.97 ± 0.38 vs. 0.77 ± 0.35 cm·s(−1)·mmHg(−1), p = 0.002). During 0.10 Hz repeated squat‐stands, dCA directional sensitivity disappeared (p = 0.359). These results suggest the potential for HIIT to influence the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men. John Wiley and Sons Inc. 2022-07-13 /pmc/articles/PMC9277516/ /pubmed/35822439 http://dx.doi.org/10.14814/phy2.15384 Text en © 2022 The Authors. Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Articles
Abbariki, Faezeh
Roy, Marc‐Antoine
Labrecque, Lawrence
Drapeau, Audrey
Imhoff, Sarah
Smirl, Jonathan D.
Brassard, Patrice
Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title_full Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title_fullStr Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title_full_unstemmed Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title_short Influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
title_sort influence of high‐intensity interval training to exhaustion on the directional sensitivity of the cerebral pressure‐flow relationship in young endurance‐trained men
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9277516/
https://www.ncbi.nlm.nih.gov/pubmed/35822439
http://dx.doi.org/10.14814/phy2.15384
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