Determinants of age-related decline in walking speed in older women
Autor(a) principal: | |
---|---|
Data de Publicação: | 2023 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/267650 |
Resumo: | Background Walking speed is reduced with aging. However, it is not certain whether the reduced walking speed is associated with physical and coordination fitness. This study explores the physical and coordination determinants of the walking speed decline in older women. Methods One-hundred-eighty-seven active older women (72.2 ± 6.8 years) were asked to perform a 10-m walk test (self-selected and maximal walking speed) and a battery of the Senior fitness test: lower body strength, lower body flexibility, agility/dynamic balance, and aerobic endurance. Two parameters characterized the walking performance: closeness to the modeled speed minimizing the energetic cost per unit distance (locomotor rehabilitation index, LRI), and the ratio of step length to step cadence (walk ratio, WR). For dependent variables (self-selected and maximal walking speeds), a recursive partitioning algorithm (classification and regression tree) was adopted, highlighting interactions across all the independent variables. Results Participants were aged from 60 to 88 years, and their self-selected and maximal speeds declined by 22% and 26% (p < 0.05), respectively. Similarly, all physical fitness variables worsened with aging (muscle strength: 33%; flexibility: 0 to −8 cm; balance: 22%; aerobic endurance: 12%; all p < 0.050). The predictors of maximal walking speed were only WR and balance. No meaningful predictions could be made using LRI and WR as dependent variables. Discussion The results suggest that at self-selected speed, the decrease in speed itself is sufficient to compensate for the age-related decline in the motor functions tested; by contrast, lowering the WR is required at maximal speed, presumably to prevent imbalance. Therefore, any excessive lowering of LRI and WR indicates loss of homeostasis of walking mechanics and invites diagnostic investigation. |
id |
UFRGS-2_40fd8f25ef7e0fe497a4a3155f0ca191 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/267650 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Martins, Valéria FeijóTesio, LuigiSimone, AnnaGonçalves, Andréa KrügerPeyré-Tartaruga, Leonardo Alexandre2023-11-25T03:27:13Z20232167-8359http://hdl.handle.net/10183/267650001169539Background Walking speed is reduced with aging. However, it is not certain whether the reduced walking speed is associated with physical and coordination fitness. This study explores the physical and coordination determinants of the walking speed decline in older women. Methods One-hundred-eighty-seven active older women (72.2 ± 6.8 years) were asked to perform a 10-m walk test (self-selected and maximal walking speed) and a battery of the Senior fitness test: lower body strength, lower body flexibility, agility/dynamic balance, and aerobic endurance. Two parameters characterized the walking performance: closeness to the modeled speed minimizing the energetic cost per unit distance (locomotor rehabilitation index, LRI), and the ratio of step length to step cadence (walk ratio, WR). For dependent variables (self-selected and maximal walking speeds), a recursive partitioning algorithm (classification and regression tree) was adopted, highlighting interactions across all the independent variables. Results Participants were aged from 60 to 88 years, and their self-selected and maximal speeds declined by 22% and 26% (p < 0.05), respectively. Similarly, all physical fitness variables worsened with aging (muscle strength: 33%; flexibility: 0 to −8 cm; balance: 22%; aerobic endurance: 12%; all p < 0.050). The predictors of maximal walking speed were only WR and balance. No meaningful predictions could be made using LRI and WR as dependent variables. Discussion The results suggest that at self-selected speed, the decrease in speed itself is sufficient to compensate for the age-related decline in the motor functions tested; by contrast, lowering the WR is required at maximal speed, presumably to prevent imbalance. Therefore, any excessive lowering of LRI and WR indicates loss of homeostasis of walking mechanics and invites diagnostic investigation.application/pdfengPeerJ. Corte Madera. Vol. 11, (2023), e14728, 18 p.CaminhadaEnvelhecimentoIdososMulheresAptidão físicaLocomotionAgingPostural balanceLocomotor rehabilitation indexWalk ratioDeterminants of age-related decline in walking speed in older womenEstrangeiroinfo: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:UFRGSTEXT001169539.pdf.txt001169539.pdf.txtExtracted Texttext/plain54417http://www.lume.ufrgs.br/bitstream/10183/267650/2/001169539.pdf.txte0fe2cb0a00173451ea3723ce3e37e93MD52ORIGINAL001169539.pdfTexto completo (inglês)application/pdf3060991http://www.lume.ufrgs.br/bitstream/10183/267650/1/001169539.pdfa3664a2231c52345b609c23270417a60MD5110183/2676502023-11-26 04:26:15.63481oai:www.lume.ufrgs.br:10183/267650Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-11-26T06:26:15Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Determinants of age-related decline in walking speed in older women |
title |
Determinants of age-related decline in walking speed in older women |
spellingShingle |
Determinants of age-related decline in walking speed in older women Martins, Valéria Feijó Caminhada Envelhecimento Idosos Mulheres Aptidão física Locomotion Aging Postural balance Locomotor rehabilitation index Walk ratio |
title_short |
Determinants of age-related decline in walking speed in older women |
title_full |
Determinants of age-related decline in walking speed in older women |
title_fullStr |
Determinants of age-related decline in walking speed in older women |
title_full_unstemmed |
Determinants of age-related decline in walking speed in older women |
title_sort |
Determinants of age-related decline in walking speed in older women |
author |
Martins, Valéria Feijó |
author_facet |
Martins, Valéria Feijó Tesio, Luigi Simone, Anna Gonçalves, Andréa Krüger Peyré-Tartaruga, Leonardo Alexandre |
author_role |
author |
author2 |
Tesio, Luigi Simone, Anna Gonçalves, Andréa Krüger Peyré-Tartaruga, Leonardo Alexandre |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Martins, Valéria Feijó Tesio, Luigi Simone, Anna Gonçalves, Andréa Krüger Peyré-Tartaruga, Leonardo Alexandre |
dc.subject.por.fl_str_mv |
Caminhada Envelhecimento Idosos Mulheres Aptidão física |
topic |
Caminhada Envelhecimento Idosos Mulheres Aptidão física Locomotion Aging Postural balance Locomotor rehabilitation index Walk ratio |
dc.subject.eng.fl_str_mv |
Locomotion Aging Postural balance Locomotor rehabilitation index Walk ratio |
description |
Background Walking speed is reduced with aging. However, it is not certain whether the reduced walking speed is associated with physical and coordination fitness. This study explores the physical and coordination determinants of the walking speed decline in older women. Methods One-hundred-eighty-seven active older women (72.2 ± 6.8 years) were asked to perform a 10-m walk test (self-selected and maximal walking speed) and a battery of the Senior fitness test: lower body strength, lower body flexibility, agility/dynamic balance, and aerobic endurance. Two parameters characterized the walking performance: closeness to the modeled speed minimizing the energetic cost per unit distance (locomotor rehabilitation index, LRI), and the ratio of step length to step cadence (walk ratio, WR). For dependent variables (self-selected and maximal walking speeds), a recursive partitioning algorithm (classification and regression tree) was adopted, highlighting interactions across all the independent variables. Results Participants were aged from 60 to 88 years, and their self-selected and maximal speeds declined by 22% and 26% (p < 0.05), respectively. Similarly, all physical fitness variables worsened with aging (muscle strength: 33%; flexibility: 0 to −8 cm; balance: 22%; aerobic endurance: 12%; all p < 0.050). The predictors of maximal walking speed were only WR and balance. No meaningful predictions could be made using LRI and WR as dependent variables. Discussion The results suggest that at self-selected speed, the decrease in speed itself is sufficient to compensate for the age-related decline in the motor functions tested; by contrast, lowering the WR is required at maximal speed, presumably to prevent imbalance. Therefore, any excessive lowering of LRI and WR indicates loss of homeostasis of walking mechanics and invites diagnostic investigation. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-11-25T03:27:13Z |
dc.date.issued.fl_str_mv |
2023 |
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/10183/267650 |
dc.identifier.issn.pt_BR.fl_str_mv |
2167-8359 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001169539 |
identifier_str_mv |
2167-8359 001169539 |
url |
http://hdl.handle.net/10183/267650 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
PeerJ. Corte Madera. Vol. 11, (2023), e14728, 18 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/10183/267650/2/001169539.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/267650/1/001169539.pdf |
bitstream.checksum.fl_str_mv |
e0fe2cb0a00173451ea3723ce3e37e93 a3664a2231c52345b609c23270417a60 |
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_ |
1798487580354805760 |