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...
Published in: | International Journal of Circumpolar Health |
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2018
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Online Access: | https://doi.org/10.1080/22423982.2018.1521244 https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae |
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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 2242-3982 doi:10.1080/22423982.2018.1521244 https://doaj.org/article/7845ef91a96e4d2db9fc18d77eadfbae |
op_doi |
https://doi.org/10.1080/22423982.2018.1521244 |
container_title |
International Journal of Circumpolar Health |
container_volume |
77 |
container_issue |
1 |
container_start_page |
1521244 |
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1766161761129463808 |