The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition

Antarctic climate is challenging, since the cold, wind and sensory monotony are stressful stimuli to individuals. Moreover, camp activities and heavy clothes may contribute to increase physiological strain. Thus, we aimed to characterise the physiological demand of a 24-day period in the Antarctic f...

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Published in:International Journal of Circumpolar Health
Main Authors: Michele M. Moraes, Thiago T. Mendes, Ygor A.T. Martins, Cristian N. Espinosa, Chams B. Maluf, Danusa D. Soares, Samuel P. Wanner, Rosa M. E. Arantes
Format: Article in Journal/Newspaper
Language:English
Published: Taylor & Francis Group 2018
Subjects:
Online Access:https://doi.org/10.1080/22423982.2018.1521244
https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae
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spelling ftdoajarticles:oai:doaj.org/article:7845ef91a96e4d2db9fc18d77eadfbae 2023-05-15T13:42:00+02:00 The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition Michele M. Moraes Thiago T. Mendes Ygor A.T. Martins Cristian N. Espinosa Chams B. Maluf Danusa D. Soares Samuel P. Wanner Rosa M. E. Arantes 2018-01-01T00:00:00Z https://doi.org/10.1080/22423982.2018.1521244 https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae EN eng Taylor & Francis Group http://dx.doi.org/10.1080/22423982.2018.1521244 https://doaj.org/toc/2242-3982 2242-3982 doi:10.1080/22423982.2018.1521244 https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae International Journal of Circumpolar Health, Vol 77, Iss 1 (2018) Cold fitness heart rate variability physical capacity training load Arctic medicine. Tropical medicine RC955-962 article 2018 ftdoajarticles https://doi.org/10.1080/22423982.2018.1521244 2023-01-08T01:34:03Z Antarctic climate is challenging, since the cold, wind and sensory monotony are stressful stimuli to individuals. Moreover, camp activities and heavy clothes may contribute to increase physiological strain. Thus, we aimed to characterise the physiological demand of a 24-day period in the Antarctic field and then to evaluate the effect of this expedition on the aerobic fitness in individuals with heterogeneous initial aerobic fitness (as determined by estimating maximum oxygen consumption – V̊O2MAX). Before and after the 24-day period in Antarctica, 7 researchers and 2 mountaineers were subjected to incremental tests to estimate their V̊O2MAX. Field effort was characterised by measuring heart rate (HR). During the field trips, their HR remained 33.4% of the recording time between 50–60% HRMAX, 22.3% between 60–70% HRMAX, and only 1.4% between 80 and 90% HRMAX. The changes in estimated V̊O2MAX during the expedition depended on the pre-expedition aerobic fitness. The post-expedition V̊O2MAX increased by 5.9% and decreased by 14.3%in individuals with lower (researchers) and higher (mountaineers) initial V̊O2MAX, respectively. We concluded that physical effort in the Antarctic field is characterised as predominantly of low- to moderate-intensity. This effort represented an effective training load for individuals with lower initial V̊O2MAX, but not for those with higher V̊O2MAX. Article in Journal/Newspaper Antarc* Antarctic Antarctica Arctic Circumpolar Health International Journal of Circumpolar Health Directory of Open Access Journals: DOAJ Articles Antarctic Arctic The Antarctic International Journal of Circumpolar Health 77 1 1521244
institution Open Polar
collection Directory of Open Access Journals: DOAJ Articles
op_collection_id ftdoajarticles
language English
topic Cold
fitness
heart rate variability
physical capacity
training load
Arctic medicine. Tropical medicine
RC955-962
spellingShingle Cold
fitness
heart rate variability
physical capacity
training load
Arctic medicine. Tropical medicine
RC955-962
Michele M. Moraes
Thiago T. Mendes
Ygor A.T. Martins
Cristian N. Espinosa
Chams B. Maluf
Danusa D. Soares
Samuel P. Wanner
Rosa M. E. Arantes
The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
topic_facet Cold
fitness
heart rate variability
physical capacity
training load
Arctic medicine. Tropical medicine
RC955-962
description Antarctic climate is challenging, since the cold, wind and sensory monotony are stressful stimuli to individuals. Moreover, camp activities and heavy clothes may contribute to increase physiological strain. Thus, we aimed to characterise the physiological demand of a 24-day period in the Antarctic field and then to evaluate the effect of this expedition on the aerobic fitness in individuals with heterogeneous initial aerobic fitness (as determined by estimating maximum oxygen consumption – V̊O2MAX). Before and after the 24-day period in Antarctica, 7 researchers and 2 mountaineers were subjected to incremental tests to estimate their V̊O2MAX. Field effort was characterised by measuring heart rate (HR). During the field trips, their HR remained 33.4% of the recording time between 50–60% HRMAX, 22.3% between 60–70% HRMAX, and only 1.4% between 80 and 90% HRMAX. The changes in estimated V̊O2MAX during the expedition depended on the pre-expedition aerobic fitness. The post-expedition V̊O2MAX increased by 5.9% and decreased by 14.3%in individuals with lower (researchers) and higher (mountaineers) initial V̊O2MAX, respectively. We concluded that physical effort in the Antarctic field is characterised as predominantly of low- to moderate-intensity. This effort represented an effective training load for individuals with lower initial V̊O2MAX, but not for those with higher V̊O2MAX.
format Article in Journal/Newspaper
author Michele M. Moraes
Thiago T. Mendes
Ygor A.T. Martins
Cristian N. Espinosa
Chams B. Maluf
Danusa D. Soares
Samuel P. Wanner
Rosa M. E. Arantes
author_facet Michele M. Moraes
Thiago T. Mendes
Ygor A.T. Martins
Cristian N. Espinosa
Chams B. Maluf
Danusa D. Soares
Samuel P. Wanner
Rosa M. E. Arantes
author_sort Michele M. Moraes
title The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
title_short The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
title_full The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
title_fullStr The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
title_full_unstemmed The changes in maximal oxygen uptake (V̊O2MAX) induced by physical exertion during an Antarctic expedition depend on the initial V̊O2MAX of the individuals: a case study of the Brazilian expedition
title_sort changes in maximal oxygen uptake (v̊o2max) induced by physical exertion during an antarctic expedition depend on the initial v̊o2max of the individuals: a case study of the brazilian expedition
publisher Taylor & Francis Group
publishDate 2018
url https://doi.org/10.1080/22423982.2018.1521244
https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae
geographic Antarctic
Arctic
The Antarctic
geographic_facet Antarctic
Arctic
The Antarctic
genre Antarc*
Antarctic
Antarctica
Arctic
Circumpolar Health
International Journal of Circumpolar Health
genre_facet Antarc*
Antarctic
Antarctica
Arctic
Circumpolar Health
International Journal of Circumpolar Health
op_source International Journal of Circumpolar Health, Vol 77, Iss 1 (2018)
op_relation http://dx.doi.org/10.1080/22423982.2018.1521244
https://doaj.org/toc/2242-3982
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doi:10.1080/22423982.2018.1521244
https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae
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container_title International Journal of Circumpolar Health
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