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Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men

BACKGROUND: The purpose of this study was to quantify cardiorespiratory and metabolic responses to body mass-based squat exercise, with specific emphasis on the relationships with the exercise duration. METHODS: Fifteen healthy young men performed body mass-based squat exercise as well as an increme...

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Autores principales: Haramura, Miki, Takai, Yohei, Yoshimoto, Takaya, Yamamoto, Masayoshi, Kanehisa, Hiroaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5299704/
https://www.ncbi.nlm.nih.gov/pubmed/28179011
http://dx.doi.org/10.1186/s40101-017-0127-9
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author Haramura, Miki
Takai, Yohei
Yoshimoto, Takaya
Yamamoto, Masayoshi
Kanehisa, Hiroaki
author_facet Haramura, Miki
Takai, Yohei
Yoshimoto, Takaya
Yamamoto, Masayoshi
Kanehisa, Hiroaki
author_sort Haramura, Miki
collection PubMed
description BACKGROUND: The purpose of this study was to quantify cardiorespiratory and metabolic responses to body mass-based squat exercise, with specific emphasis on the relationships with the exercise duration. METHODS: Fifteen healthy young men performed body mass-based squat exercise as well as an incremental loaded bicycle test, which determine maximal oxygen uptake and maximal heart rate, with an interval of 2 days between the tests. During both tasks, oxygen uptake, blood lactate concentration (BLa), and heart rate (HR) were determined. Oxygen uptake in both tasks was divided by body mass (VO(2)). VO(2) in the squat task was normalized to VO(2) in the incremental test (%VO(2)max). In addition, electromyograms (EMGs) were also recorded from the vastus lateralis, rectus femoris, vastus medialis, biceps femoris, and gluteus maximus. RESULTS: Cardiorespiratory parameters and BLa did not change after 5 min from the exercise onset. The %VO(2)max and BLa during body mass-based squat exercise were significantly related to maximal VO(2) obtained by the incremental test. Metabolic equivalents reached 6.5 when the squat exercise was continuously performed for 5 min. CONCLUSIONS: These findings indicate that (1) the squat exercise adopted here is of moderate intensity and predominantly uses aerobic energy supply after 5 min from the start of the exercise and (2) relative intensity during the exercise depends on an individual’s maximal aerobic power.
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spelling pubmed-52997042017-02-13 Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men Haramura, Miki Takai, Yohei Yoshimoto, Takaya Yamamoto, Masayoshi Kanehisa, Hiroaki J Physiol Anthropol Original Article BACKGROUND: The purpose of this study was to quantify cardiorespiratory and metabolic responses to body mass-based squat exercise, with specific emphasis on the relationships with the exercise duration. METHODS: Fifteen healthy young men performed body mass-based squat exercise as well as an incremental loaded bicycle test, which determine maximal oxygen uptake and maximal heart rate, with an interval of 2 days between the tests. During both tasks, oxygen uptake, blood lactate concentration (BLa), and heart rate (HR) were determined. Oxygen uptake in both tasks was divided by body mass (VO(2)). VO(2) in the squat task was normalized to VO(2) in the incremental test (%VO(2)max). In addition, electromyograms (EMGs) were also recorded from the vastus lateralis, rectus femoris, vastus medialis, biceps femoris, and gluteus maximus. RESULTS: Cardiorespiratory parameters and BLa did not change after 5 min from the exercise onset. The %VO(2)max and BLa during body mass-based squat exercise were significantly related to maximal VO(2) obtained by the incremental test. Metabolic equivalents reached 6.5 when the squat exercise was continuously performed for 5 min. CONCLUSIONS: These findings indicate that (1) the squat exercise adopted here is of moderate intensity and predominantly uses aerobic energy supply after 5 min from the start of the exercise and (2) relative intensity during the exercise depends on an individual’s maximal aerobic power. BioMed Central 2017-02-08 /pmc/articles/PMC5299704/ /pubmed/28179011 http://dx.doi.org/10.1186/s40101-017-0127-9 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Original Article
Haramura, Miki
Takai, Yohei
Yoshimoto, Takaya
Yamamoto, Masayoshi
Kanehisa, Hiroaki
Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title_full Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title_fullStr Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title_full_unstemmed Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title_short Cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
title_sort cardiorespiratory and metabolic responses to body mass-based squat exercise in young men
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5299704/
https://www.ncbi.nlm.nih.gov/pubmed/28179011
http://dx.doi.org/10.1186/s40101-017-0127-9
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