Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force

Detalhes bibliográficos
Autor(a) principal: Santos, Paulo Cezar Rocha dos [UNESP]
Data de Publicação: 2021
Outros Autores: Lamoth, Claudine J. C., Gobbi, Lilian Teresa Bucken [UNESP], Zijdewind, Inge, Barbieri, Fabio Augusto [UNESP], Hortobágyi, Tibor
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3389/fnagi.2021.679282
http://hdl.handle.net/11449/233264
Resumo: Background: Repetitive sit-to-stand (rSTS) is a fatigue perturbation model to examine the age-effects on adaptability in posture and gait, yet the age-effects on muscle activation during rSTS per se are unclear. We examined the effects of age and exhaustive rSTS on muscle activation magnitude, onset, and duration during ascent and descent phases of the STS task. Methods: Healthy older (n = 12) and younger (n = 11) adults performed rSTS, at a controlled frequency dictated by a metronome (2 s for cycle), to failure or for 30 min. We assessed muscle activation magnitude, onset, and duration of plantar flexors, dorsiflexors, knee flexors, knee extensors, and hip stabilizers during the initial and late stages of rSTS. Before and after rSTS, we measured maximal voluntary isometric knee extension force, and rate of perceived exertion, which was also recorded during rSTS task. Results: Older vs. younger adults generated 35% lower maximum voluntary isometric knee extension force. During the initial stage of rSTS, older vs. younger adults activated the dorsiflexor 60% higher, all 5 muscle groups 37% longer, and the hip stabilizers 80% earlier. Older vs. younger adults completed 467 fewer STS trials and, at failure, their rate of perceived exertion was ~17 of 20 on the Borg scale. At the end of the rSTS, maximum voluntary isometric knee extension force decreased 16% similarly in older and younger, as well as the similar age groups decline in activation of the dorsiflexor and knee extensor muscles (all p < 0.05). Conclusion: By performing 467 fewer STS trials, older adults minimized the potential effects of fatigability on muscle activation, voluntary force, and motor function. Such a sparing effect may explain the minimal changes in gait after rSTS reported in previous studies, suggesting a limited scope of this perturbation model to probe age-effects on muscle adaptation in functional tasks.
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spelling Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Forceagingelectromyography - EMGfatiguefunctionalitymuscle strengthBackground: Repetitive sit-to-stand (rSTS) is a fatigue perturbation model to examine the age-effects on adaptability in posture and gait, yet the age-effects on muscle activation during rSTS per se are unclear. We examined the effects of age and exhaustive rSTS on muscle activation magnitude, onset, and duration during ascent and descent phases of the STS task. Methods: Healthy older (n = 12) and younger (n = 11) adults performed rSTS, at a controlled frequency dictated by a metronome (2 s for cycle), to failure or for 30 min. We assessed muscle activation magnitude, onset, and duration of plantar flexors, dorsiflexors, knee flexors, knee extensors, and hip stabilizers during the initial and late stages of rSTS. Before and after rSTS, we measured maximal voluntary isometric knee extension force, and rate of perceived exertion, which was also recorded during rSTS task. Results: Older vs. younger adults generated 35% lower maximum voluntary isometric knee extension force. During the initial stage of rSTS, older vs. younger adults activated the dorsiflexor 60% higher, all 5 muscle groups 37% longer, and the hip stabilizers 80% earlier. Older vs. younger adults completed 467 fewer STS trials and, at failure, their rate of perceived exertion was ~17 of 20 on the Borg scale. At the end of the rSTS, maximum voluntary isometric knee extension force decreased 16% similarly in older and younger, as well as the similar age groups decline in activation of the dorsiflexor and knee extensor muscles (all p < 0.05). Conclusion: By performing 467 fewer STS trials, older adults minimized the potential effects of fatigability on muscle activation, voluntary force, and motor function. Such a sparing effect may explain the minimal changes in gait after rSTS reported in previous studies, suggesting a limited scope of this perturbation model to probe age-effects on muscle adaptation in functional tasks.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Department of Human Movement Sciences University Medical Center Groningen University of GroningenGraduate Program in Movement Sciences Posture and Gait Studies Laboratory (LEPLO) Institute of Biosciences São Paulo State University (UNESP)Department of Biomedical Sciences of Cells and Systems University Medical Center Groningen University of GroningenDepartment of Physical Education Graduate Program in Movement Sciences Human Movement Research Laboratory São Paulo State University (UNESP)Department of Sport Biology Institute of Sport Sciences and Physical Education Faculty of Sciences University of PécsSomogy County Kaposi Mór Teaching HospitalGraduate Program in Movement Sciences Posture and Gait Studies Laboratory (LEPLO) Institute of Biosciences São Paulo State University (UNESP)Department of Physical Education Graduate Program in Movement Sciences Human Movement Research Laboratory São Paulo State University (UNESP)CNPq: 142057/2017CNPq: 309045/2017-7University of GroningenUniversidade Estadual Paulista (UNESP)University of PécsSomogy County Kaposi Mór Teaching HospitalSantos, Paulo Cezar Rocha dos [UNESP]Lamoth, Claudine J. C.Gobbi, Lilian Teresa Bucken [UNESP]Zijdewind, IngeBarbieri, Fabio Augusto [UNESP]Hortobágyi, Tibor2022-05-01T06:02:33Z2022-05-01T06:02:33Z2021-06-21info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3389/fnagi.2021.679282Frontiers in Aging Neuroscience, v. 13.1663-4365http://hdl.handle.net/11449/23326410.3389/fnagi.2021.6792822-s2.0-85110142451Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengFrontiers in Aging Neuroscienceinfo:eu-repo/semantics/openAccess2024-04-24T18:53:32Zoai:repositorio.unesp.br:11449/233264Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:57:29.694126Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
title Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
spellingShingle Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
Santos, Paulo Cezar Rocha dos [UNESP]
aging
electromyography - EMG
fatigue
functionality
muscle strength
title_short Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
title_full Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
title_fullStr Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
title_full_unstemmed Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
title_sort Older Compared With Younger Adults Performed 467 Fewer Sit-to-Stand Trials, Accompanied by Small Changes in Muscle Activation and Voluntary Force
author Santos, Paulo Cezar Rocha dos [UNESP]
author_facet Santos, Paulo Cezar Rocha dos [UNESP]
Lamoth, Claudine J. C.
Gobbi, Lilian Teresa Bucken [UNESP]
Zijdewind, Inge
Barbieri, Fabio Augusto [UNESP]
Hortobágyi, Tibor
author_role author
author2 Lamoth, Claudine J. C.
Gobbi, Lilian Teresa Bucken [UNESP]
Zijdewind, Inge
Barbieri, Fabio Augusto [UNESP]
Hortobágyi, Tibor
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv University of Groningen
Universidade Estadual Paulista (UNESP)
University of Pécs
Somogy County Kaposi Mór Teaching Hospital
dc.contributor.author.fl_str_mv Santos, Paulo Cezar Rocha dos [UNESP]
Lamoth, Claudine J. C.
Gobbi, Lilian Teresa Bucken [UNESP]
Zijdewind, Inge
Barbieri, Fabio Augusto [UNESP]
Hortobágyi, Tibor
dc.subject.por.fl_str_mv aging
electromyography - EMG
fatigue
functionality
muscle strength
topic aging
electromyography - EMG
fatigue
functionality
muscle strength
description Background: Repetitive sit-to-stand (rSTS) is a fatigue perturbation model to examine the age-effects on adaptability in posture and gait, yet the age-effects on muscle activation during rSTS per se are unclear. We examined the effects of age and exhaustive rSTS on muscle activation magnitude, onset, and duration during ascent and descent phases of the STS task. Methods: Healthy older (n = 12) and younger (n = 11) adults performed rSTS, at a controlled frequency dictated by a metronome (2 s for cycle), to failure or for 30 min. We assessed muscle activation magnitude, onset, and duration of plantar flexors, dorsiflexors, knee flexors, knee extensors, and hip stabilizers during the initial and late stages of rSTS. Before and after rSTS, we measured maximal voluntary isometric knee extension force, and rate of perceived exertion, which was also recorded during rSTS task. Results: Older vs. younger adults generated 35% lower maximum voluntary isometric knee extension force. During the initial stage of rSTS, older vs. younger adults activated the dorsiflexor 60% higher, all 5 muscle groups 37% longer, and the hip stabilizers 80% earlier. Older vs. younger adults completed 467 fewer STS trials and, at failure, their rate of perceived exertion was ~17 of 20 on the Borg scale. At the end of the rSTS, maximum voluntary isometric knee extension force decreased 16% similarly in older and younger, as well as the similar age groups decline in activation of the dorsiflexor and knee extensor muscles (all p < 0.05). Conclusion: By performing 467 fewer STS trials, older adults minimized the potential effects of fatigability on muscle activation, voluntary force, and motor function. Such a sparing effect may explain the minimal changes in gait after rSTS reported in previous studies, suggesting a limited scope of this perturbation model to probe age-effects on muscle adaptation in functional tasks.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-21
2022-05-01T06:02:33Z
2022-05-01T06:02:33Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.3389/fnagi.2021.679282
Frontiers in Aging Neuroscience, v. 13.
1663-4365
http://hdl.handle.net/11449/233264
10.3389/fnagi.2021.679282
2-s2.0-85110142451
url http://dx.doi.org/10.3389/fnagi.2021.679282
http://hdl.handle.net/11449/233264
identifier_str_mv Frontiers in Aging Neuroscience, v. 13.
1663-4365
10.3389/fnagi.2021.679282
2-s2.0-85110142451
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Frontiers in Aging Neuroscience
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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