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

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dc.creatorMichele Macedo Moraes
dc.creatorThiago Teixeira Mendes
dc.creatorYgor Antônio Tinoco Martins
dc.creatorCristian Núñez Espinosa
dc.creatorChams Bicalho Maluf
dc.creatorDanusa Dias Soares
dc.creatorSamuel Penna Wanner
dc.creatorRosa Maria Esteves Arantes
dc.date.accessioned2023-01-20T11:49:20Z
dc.date.accessioned2025-09-08T23:29:11Z
dc.date.available2023-01-20T11:49:20Z
dc.date.issued2018-09
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipOutra Agência
dc.format.mimetypepdf
dc.identifier.doihttps://doi.org/10.1080/22423982.2018.1521244
dc.identifier.issn2242-3982
dc.identifier.urihttps://hdl.handle.net/1843/49020
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofInternational Journal of Circumpolar Health
dc.rightsAcesso Aberto
dc.subjectFrio
dc.subjectExercícios físicos
dc.subjectVariabilidade do batimento cardíaco
dc.subjectAptidão física
dc.subject.otherCold
dc.subject.otherFitness
dc.subject.otherHeart rate variability
dc.subject.otherPhysical capacity
dc.subject.otherTrainning load
dc.titleThe 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
dc.typeArtigo de periódico
local.citation.epage12
local.citation.issue1
local.citation.spage1
local.citation.volume77
local.description.resumoAntarctic 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.
local.identifier.orcidhttp://orcid.org/0000-0002-5705-8890
local.identifier.orcidhttps://orcid.org/0000-0003-1644-4020
local.identifier.orcidhttp://orcid.org/0000-0002-5534-7330
local.identifier.orcidhttp://orcid.org/0000-0002-9896-7062
local.identifier.orcidhttps://orcid.org/0000-0002-3690-2554
local.identifier.orcidhttps://orcid.org/0000-0002-5705-8890
local.identifier.orcidhttp://orcid.org/0000-0003-1428-9717
local.publisher.countryBrasil
local.publisher.departmentEEF - DEPARTAMENTO DE EDUCAÇÃO FÍSICA
local.publisher.departmentICB - DEPARTAMENTO DE PATOLOGIA
local.publisher.departmentMED - DEPARTAMENTO DE PROPEDÊUTICA COMPLEMENTAR
local.publisher.initialsUFMG
local.url.externahttps://www.tandfonline.com/doi/full/10.1080/22423982.2018.1521244

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