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Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance

This study aimed to examine whether repeated exposures to low (2%) and moderate (4%) exercise-induced hypohydration may reverse the potentially deleterious effect of hypohydration on endurance performance. Using a randomized crossover protocol, ten volunteers (23 years, [Formula: see text] O(2max):...

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Autores principales: Deshayes, Thomas A., Daigle, Nicolas, Jeker, David, Lamontagne-Lacasse, Martin, Perreault-Briere, Maxime, Claveau, Pascale, Simoneau, Ivan L., Chamoux, Estelle, Goulet, Eric D. B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704556/
https://www.ncbi.nlm.nih.gov/pubmed/34960028
http://dx.doi.org/10.3390/nu13124477
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author Deshayes, Thomas A.
Daigle, Nicolas
Jeker, David
Lamontagne-Lacasse, Martin
Perreault-Briere, Maxime
Claveau, Pascale
Simoneau, Ivan L.
Chamoux, Estelle
Goulet, Eric D. B.
author_facet Deshayes, Thomas A.
Daigle, Nicolas
Jeker, David
Lamontagne-Lacasse, Martin
Perreault-Briere, Maxime
Claveau, Pascale
Simoneau, Ivan L.
Chamoux, Estelle
Goulet, Eric D. B.
author_sort Deshayes, Thomas A.
collection PubMed
description This study aimed to examine whether repeated exposures to low (2%) and moderate (4%) exercise-induced hypohydration may reverse the potentially deleterious effect of hypohydration on endurance performance. Using a randomized crossover protocol, ten volunteers (23 years, [Formula: see text] O(2max): 54 mL∙kg(−1)∙min(−1)) completed two 4-week training blocks interspersed by a 5-week washout period. During one block, participants replaced all fluid losses (EUH) while in the other they were fluid restricted (DEH). Participants completed three exercise sessions per week (walking/running, 55% [Formula: see text] O(2max), 40 °C): (1) 1 h while fluid restricted or drinking ad libitum, (2) until 2 and (3) 4% of body mass has been lost or replaced. During the first and the fourth week of each training block, participants completed a 12 min time-trial immediately after 2% and 4% body mass loss has been reached. Exercise duration and distance completed (14.1 ± 2.7 vs. 6.9 ± 1.5 km) during the fixed-intensity exercise bouts were greater in the 4 compared to the 2% condition (p < 0.01) with no difference between DEH and EUH. During the first week, heart rate, rectal temperature and perceived exertion were higher (p < 0.05) with DEH than EUH, and training did not change these outcomes. Exercise-induced hypohydration of 2% and 4% body mass impaired time-trial performance in a practical manner both at the start and end of the training block. In conclusion, exercise-induced hypohydration of 2% and 4% body mass impairs 12 min walking/running time-trial, and repeated exposures to these hypohydration levels cannot reverse the impairment in performance.
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spelling pubmed-87045562021-12-25 Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance Deshayes, Thomas A. Daigle, Nicolas Jeker, David Lamontagne-Lacasse, Martin Perreault-Briere, Maxime Claveau, Pascale Simoneau, Ivan L. Chamoux, Estelle Goulet, Eric D. B. Nutrients Article This study aimed to examine whether repeated exposures to low (2%) and moderate (4%) exercise-induced hypohydration may reverse the potentially deleterious effect of hypohydration on endurance performance. Using a randomized crossover protocol, ten volunteers (23 years, [Formula: see text] O(2max): 54 mL∙kg(−1)∙min(−1)) completed two 4-week training blocks interspersed by a 5-week washout period. During one block, participants replaced all fluid losses (EUH) while in the other they were fluid restricted (DEH). Participants completed three exercise sessions per week (walking/running, 55% [Formula: see text] O(2max), 40 °C): (1) 1 h while fluid restricted or drinking ad libitum, (2) until 2 and (3) 4% of body mass has been lost or replaced. During the first and the fourth week of each training block, participants completed a 12 min time-trial immediately after 2% and 4% body mass loss has been reached. Exercise duration and distance completed (14.1 ± 2.7 vs. 6.9 ± 1.5 km) during the fixed-intensity exercise bouts were greater in the 4 compared to the 2% condition (p < 0.01) with no difference between DEH and EUH. During the first week, heart rate, rectal temperature and perceived exertion were higher (p < 0.05) with DEH than EUH, and training did not change these outcomes. Exercise-induced hypohydration of 2% and 4% body mass impaired time-trial performance in a practical manner both at the start and end of the training block. In conclusion, exercise-induced hypohydration of 2% and 4% body mass impairs 12 min walking/running time-trial, and repeated exposures to these hypohydration levels cannot reverse the impairment in performance. MDPI 2021-12-15 /pmc/articles/PMC8704556/ /pubmed/34960028 http://dx.doi.org/10.3390/nu13124477 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Deshayes, Thomas A.
Daigle, Nicolas
Jeker, David
Lamontagne-Lacasse, Martin
Perreault-Briere, Maxime
Claveau, Pascale
Simoneau, Ivan L.
Chamoux, Estelle
Goulet, Eric D. B.
Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title_full Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title_fullStr Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title_full_unstemmed Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title_short Impact of Repeated Acute Exposures to Low and Moderate Exercise-Induced Hypohydration on Physiological and Subjective Responses and Endurance Performance
title_sort impact of repeated acute exposures to low and moderate exercise-induced hypohydration on physiological and subjective responses and endurance performance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8704556/
https://www.ncbi.nlm.nih.gov/pubmed/34960028
http://dx.doi.org/10.3390/nu13124477
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