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Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia

We compared upper limb muscle oxygenation responses during repeated double-poling sprint exercise in normobaric hypoxia and normoxia. Eight male kayakers completed a repeated double-poling sprint exercise (3 × 3 × 20-s maximal sprints, 40-s passive recovery, 5-min rest) in either hypoxia (HYP, FiO(2...

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Autores principales: Yamaguchi, Keiichi, Kasai, Nobukazu, Sumi, Daichi, Yatsutani, Haruka, Girard, Olivier, Goto, Kazushige
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6591374/
https://www.ncbi.nlm.nih.gov/pubmed/31275162
http://dx.doi.org/10.3389/fphys.2019.00743
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author Yamaguchi, Keiichi
Kasai, Nobukazu
Sumi, Daichi
Yatsutani, Haruka
Girard, Olivier
Goto, Kazushige
author_facet Yamaguchi, Keiichi
Kasai, Nobukazu
Sumi, Daichi
Yatsutani, Haruka
Girard, Olivier
Goto, Kazushige
author_sort Yamaguchi, Keiichi
collection PubMed
description We compared upper limb muscle oxygenation responses during repeated double-poling sprint exercise in normobaric hypoxia and normoxia. Eight male kayakers completed a repeated double-poling sprint exercise (3 × 3 × 20-s maximal sprints, 40-s passive recovery, 5-min rest) in either hypoxia (HYP, FiO(2) = 14.5%) or normoxia (NOR, FiO(2) = 20.9%). Power output, muscle oxygenation of triceps brachii muscle (using near infrared spectroscopy), arterial oxygen saturation, and cardiorespiratory variables were monitored. Mean power output tended to be lower (-5.2%; P = 0.06) in HYP compared with NOR, while arterial oxygen saturation (82.9 ± 0.9% vs. 90.5 ± 0.8%) and systemic oxygen uptake (1936 ± 140 vs. 2408 ± 83 mL⋅min(-1)) values were lower (P < 0.05). Exercise-induced increases in deoxygenated hemoglobin (241.7 ± 46.9% vs. 175.8 ± 27.2%) and total hemoglobin (138.0 ± 18.1% vs. 112.1 ± 6.7%) were greater in HYP in reference to NOR (P < 0.05). Despite moderate hypoxia exacerbating exercise-induced elevation in blood perfusion of active upper limb musculature, power output during repeated double-poling exercise only tended to be lower.
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spelling pubmed-65913742019-07-02 Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia Yamaguchi, Keiichi Kasai, Nobukazu Sumi, Daichi Yatsutani, Haruka Girard, Olivier Goto, Kazushige Front Physiol Physiology We compared upper limb muscle oxygenation responses during repeated double-poling sprint exercise in normobaric hypoxia and normoxia. Eight male kayakers completed a repeated double-poling sprint exercise (3 × 3 × 20-s maximal sprints, 40-s passive recovery, 5-min rest) in either hypoxia (HYP, FiO(2) = 14.5%) or normoxia (NOR, FiO(2) = 20.9%). Power output, muscle oxygenation of triceps brachii muscle (using near infrared spectroscopy), arterial oxygen saturation, and cardiorespiratory variables were monitored. Mean power output tended to be lower (-5.2%; P = 0.06) in HYP compared with NOR, while arterial oxygen saturation (82.9 ± 0.9% vs. 90.5 ± 0.8%) and systemic oxygen uptake (1936 ± 140 vs. 2408 ± 83 mL⋅min(-1)) values were lower (P < 0.05). Exercise-induced increases in deoxygenated hemoglobin (241.7 ± 46.9% vs. 175.8 ± 27.2%) and total hemoglobin (138.0 ± 18.1% vs. 112.1 ± 6.7%) were greater in HYP in reference to NOR (P < 0.05). Despite moderate hypoxia exacerbating exercise-induced elevation in blood perfusion of active upper limb musculature, power output during repeated double-poling exercise only tended to be lower. Frontiers Media S.A. 2019-06-18 /pmc/articles/PMC6591374/ /pubmed/31275162 http://dx.doi.org/10.3389/fphys.2019.00743 Text en Copyright © 2019 Yamaguchi, Kasai, Sumi, Yatsutani, Girard and Goto. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Physiology
Yamaguchi, Keiichi
Kasai, Nobukazu
Sumi, Daichi
Yatsutani, Haruka
Girard, Olivier
Goto, Kazushige
Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title_full Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title_fullStr Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title_full_unstemmed Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title_short Muscle Oxygenation During Repeated Double-Poling Sprint Exercise in Normobaric Hypoxia and Normoxia
title_sort muscle oxygenation during repeated double-poling sprint exercise in normobaric hypoxia and normoxia
topic Physiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6591374/
https://www.ncbi.nlm.nih.gov/pubmed/31275162
http://dx.doi.org/10.3389/fphys.2019.00743
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