Effects of load carriage on physiological determinants in adventure racers

Detalhes bibliográficos
Autor(a) principal: Fagundes, Alex de Oliveira
Data de Publicação: 2018
Outros Autores: Monteiro, Elren Passos, Franzoni, Leandro Tolfo, Fraga, Bruna Sacchi, Peyré-Tartaruga, Leonardo Alexandre, Pantoja, Patrícia Dias, Fischer, Gabriela
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/224821
Resumo: Adventure racing athletes need run carrying loads during the race. A better understanding of how different loads influence physiological determinants in adventure racers could provide useful insights to gauge training interventions to improve running performance. We compare the maximum oxygen uptake (VO2max), the cost of transport (C) and ventilatory thresholds of twelve adventure running athletes at three load conditions: unloaded, 7 and 15% of body mass. Twelve healthy men experienced athletes of Adventure Racing (age 31.3 ± 7.7 years, height 1.81 ± 0.05 m, body mass 75.5 ± 9.1 kg) carried out three maximal progressive (VO2max protocol) and three submaximal constant-load (running cost protocol) tests, defined in the following quasi-randomized conditions: unloaded, 7% and, 15% of body mass. The VO2max (unload: 59.7 ± 5.9; 7%: 61.7 ± 6.6 and 15%: 64.6 ± 5.4 ml kg-1 min-1) did not change among the conditions. While the 7% condition does neither modify the C nor the ventilatory thresholds, the 15% condition resulted in a higher C (5.2 ± 0.9 J kg-1 m-1; P = 0.001; d = 1.48) than the unloaded condition (4.0 ± 0.7 J kg-1 m-1). First ventilatory threshold was greater at 15% than control condition (+15.5%; P = 0.003; d = 1.44). Interestingly, the velocities on the severe-intensity domain (between second ventilatory threshold and VO2max) were reduced 1% equivalently to 1% increasing load (relative to body mass). The loading until 15% of body mass seems to affect partially the crucial metabolic and ventilatory parameters, specifically the C but not the VO2max. These findings are compatible with the concept that interventions that enhance running economy with loads may improve the running performance of adventure racing’s athletes.
id UFRGS-2_8dc037e752ec1626cb42f9115604cf49
oai_identifier_str oai:www.lume.ufrgs.br:10183/224821
network_acronym_str UFRGS-2
network_name_str Repositório Institucional da UFRGS
repository_id_str
spelling Fagundes, Alex de OliveiraMonteiro, Elren PassosFranzoni, Leandro TolfoFraga, Bruna SacchiPeyré-Tartaruga, Leonardo AlexandrePantoja, Patrícia DiasFischer, Gabriela2021-07-30T04:36:41Z20181932-6203http://hdl.handle.net/10183/224821001081506Adventure racing athletes need run carrying loads during the race. A better understanding of how different loads influence physiological determinants in adventure racers could provide useful insights to gauge training interventions to improve running performance. We compare the maximum oxygen uptake (VO2max), the cost of transport (C) and ventilatory thresholds of twelve adventure running athletes at three load conditions: unloaded, 7 and 15% of body mass. Twelve healthy men experienced athletes of Adventure Racing (age 31.3 ± 7.7 years, height 1.81 ± 0.05 m, body mass 75.5 ± 9.1 kg) carried out three maximal progressive (VO2max protocol) and three submaximal constant-load (running cost protocol) tests, defined in the following quasi-randomized conditions: unloaded, 7% and, 15% of body mass. The VO2max (unload: 59.7 ± 5.9; 7%: 61.7 ± 6.6 and 15%: 64.6 ± 5.4 ml kg-1 min-1) did not change among the conditions. While the 7% condition does neither modify the C nor the ventilatory thresholds, the 15% condition resulted in a higher C (5.2 ± 0.9 J kg-1 m-1; P = 0.001; d = 1.48) than the unloaded condition (4.0 ± 0.7 J kg-1 m-1). First ventilatory threshold was greater at 15% than control condition (+15.5%; P = 0.003; d = 1.44). Interestingly, the velocities on the severe-intensity domain (between second ventilatory threshold and VO2max) were reduced 1% equivalently to 1% increasing load (relative to body mass). The loading until 15% of body mass seems to affect partially the crucial metabolic and ventilatory parameters, specifically the C but not the VO2max. These findings are compatible with the concept that interventions that enhance running economy with loads may improve the running performance of adventure racing’s athletes.application/pdfengPlos One. San Francisco. V.12, n. 12 (Dec. 2017), e0189516, 13 p.CorridaTreinamento de forçaEffects of load carriage on physiological determinants in adventure racersEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001081506.pdf.txt001081506.pdf.txtExtracted Texttext/plain40584http://www.lume.ufrgs.br/bitstream/10183/224821/2/001081506.pdf.txt92d57e85cf75fc2cf09b66bcba95a36cMD52ORIGINAL001081506.pdfTexto completo (inglês)application/pdf4138412http://www.lume.ufrgs.br/bitstream/10183/224821/1/001081506.pdfdd4823f720fb3dfb5ca5cbc399afa957MD5110183/2248212023-09-24 03:39:30.530329oai:www.lume.ufrgs.br:10183/224821Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-24T06:39:30Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Effects of load carriage on physiological determinants in adventure racers
title Effects of load carriage on physiological determinants in adventure racers
spellingShingle Effects of load carriage on physiological determinants in adventure racers
Fagundes, Alex de Oliveira
Corrida
Treinamento de força
title_short Effects of load carriage on physiological determinants in adventure racers
title_full Effects of load carriage on physiological determinants in adventure racers
title_fullStr Effects of load carriage on physiological determinants in adventure racers
title_full_unstemmed Effects of load carriage on physiological determinants in adventure racers
title_sort Effects of load carriage on physiological determinants in adventure racers
author Fagundes, Alex de Oliveira
author_facet Fagundes, Alex de Oliveira
Monteiro, Elren Passos
Franzoni, Leandro Tolfo
Fraga, Bruna Sacchi
Peyré-Tartaruga, Leonardo Alexandre
Pantoja, Patrícia Dias
Fischer, Gabriela
author_role author
author2 Monteiro, Elren Passos
Franzoni, Leandro Tolfo
Fraga, Bruna Sacchi
Peyré-Tartaruga, Leonardo Alexandre
Pantoja, Patrícia Dias
Fischer, Gabriela
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Fagundes, Alex de Oliveira
Monteiro, Elren Passos
Franzoni, Leandro Tolfo
Fraga, Bruna Sacchi
Peyré-Tartaruga, Leonardo Alexandre
Pantoja, Patrícia Dias
Fischer, Gabriela
dc.subject.por.fl_str_mv Corrida
Treinamento de força
topic Corrida
Treinamento de força
description Adventure racing athletes need run carrying loads during the race. A better understanding of how different loads influence physiological determinants in adventure racers could provide useful insights to gauge training interventions to improve running performance. We compare the maximum oxygen uptake (VO2max), the cost of transport (C) and ventilatory thresholds of twelve adventure running athletes at three load conditions: unloaded, 7 and 15% of body mass. Twelve healthy men experienced athletes of Adventure Racing (age 31.3 ± 7.7 years, height 1.81 ± 0.05 m, body mass 75.5 ± 9.1 kg) carried out three maximal progressive (VO2max protocol) and three submaximal constant-load (running cost protocol) tests, defined in the following quasi-randomized conditions: unloaded, 7% and, 15% of body mass. The VO2max (unload: 59.7 ± 5.9; 7%: 61.7 ± 6.6 and 15%: 64.6 ± 5.4 ml kg-1 min-1) did not change among the conditions. While the 7% condition does neither modify the C nor the ventilatory thresholds, the 15% condition resulted in a higher C (5.2 ± 0.9 J kg-1 m-1; P = 0.001; d = 1.48) than the unloaded condition (4.0 ± 0.7 J kg-1 m-1). First ventilatory threshold was greater at 15% than control condition (+15.5%; P = 0.003; d = 1.44). Interestingly, the velocities on the severe-intensity domain (between second ventilatory threshold and VO2max) were reduced 1% equivalently to 1% increasing load (relative to body mass). The loading until 15% of body mass seems to affect partially the crucial metabolic and ventilatory parameters, specifically the C but not the VO2max. These findings are compatible with the concept that interventions that enhance running economy with loads may improve the running performance of adventure racing’s athletes.
publishDate 2018
dc.date.issued.fl_str_mv 2018
dc.date.accessioned.fl_str_mv 2021-07-30T04:36:41Z
dc.type.driver.fl_str_mv Estrangeiro
info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/224821
dc.identifier.issn.pt_BR.fl_str_mv 1932-6203
dc.identifier.nrb.pt_BR.fl_str_mv 001081506
identifier_str_mv 1932-6203
001081506
url http://hdl.handle.net/10183/224821
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Plos One. San Francisco. V.12, n. 12 (Dec. 2017), e0189516, 13 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
bitstream.url.fl_str_mv http://www.lume.ufrgs.br/bitstream/10183/224821/2/001081506.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/224821/1/001081506.pdf
bitstream.checksum.fl_str_mv 92d57e85cf75fc2cf09b66bcba95a36c
dd4823f720fb3dfb5ca5cbc399afa957
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)
repository.mail.fl_str_mv
_version_ 1801225029240750080