Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.neulet.2019.03.004 http://hdl.handle.net/11449/190319 |
Resumo: | Differences in the postural stabilization of older and young adults have been shown to be task-dependent on both visual and postural challenges; however, the gaze behavior during such tasks has rarely been examined. This study investigated the effects of horizontal and vertical saccades on gaze control, center of pressure (CoP) and head displacement of young and older adults on different bases of support. Ten young adults (20.7 ± 3.4 years) and ten older adults (71.6 ± 3.1 years) remained in an upright stance on a force platform wearing an eye-head tracker device. The participants performed 30-second trials according to two bases of support (feet apart and semi-tandem) and three gaze behavior (fixation, horizontal and vertical saccades) conditions. Older adults presented greater CoP amplitude (p < 0.002) and velocity (p < 0.001) (ML axis), and higher head amplitude (ML) (p < 0.002) than young adults during the semi tandem base. Head displacement of both groups presented higher velocity (ML axis) during horizontal (p < 0.001) and vertical saccades (p < 0.01) than the fixation task only on the semi tandem base. There was higher number of fixations (p < 0.001) and lower mean fixation duration (p < 0.001) on the semi-tandem base (p < 0.05). The results showed higher gaze latency variability in vertical saccades for older adults (p < 0.01). Challenging postural tasks may alter postural adjustments and gaze control during saccadic tasks. Particularly, the greater postural instability of older adults increased the gaze latency variability during saccadic tasks, suggesting some deterioration in the posture-gaze relation with aging. |
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spelling |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adultsElderlyEye movementsPostural controlSaccadesSemi tandem stanceDifferences in the postural stabilization of older and young adults have been shown to be task-dependent on both visual and postural challenges; however, the gaze behavior during such tasks has rarely been examined. This study investigated the effects of horizontal and vertical saccades on gaze control, center of pressure (CoP) and head displacement of young and older adults on different bases of support. Ten young adults (20.7 ± 3.4 years) and ten older adults (71.6 ± 3.1 years) remained in an upright stance on a force platform wearing an eye-head tracker device. The participants performed 30-second trials according to two bases of support (feet apart and semi-tandem) and three gaze behavior (fixation, horizontal and vertical saccades) conditions. Older adults presented greater CoP amplitude (p < 0.002) and velocity (p < 0.001) (ML axis), and higher head amplitude (ML) (p < 0.002) than young adults during the semi tandem base. Head displacement of both groups presented higher velocity (ML axis) during horizontal (p < 0.001) and vertical saccades (p < 0.01) than the fixation task only on the semi tandem base. There was higher number of fixations (p < 0.001) and lower mean fixation duration (p < 0.001) on the semi-tandem base (p < 0.05). The results showed higher gaze latency variability in vertical saccades for older adults (p < 0.01). Challenging postural tasks may alter postural adjustments and gaze control during saccadic tasks. Particularly, the greater postural instability of older adults increased the gaze latency variability during saccadic tasks, suggesting some deterioration in the posture-gaze relation with aging.UNESP - Sao Paulo State University Department of Physical Education Faculty of SciencesHealth Informatics Postgraduate Program Paulista School of Medicine Federal University of São PauloPost-graduation Program in Movement Sciences São Paulo State University – UNESPUNESP - Sao Paulo State University Department of Physical Education Faculty of SciencesPost-graduation Program in Movement Sciences São Paulo State University – UNESPUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Polastri, Paula F. [UNESP]Barbieri, Fabio A. [UNESP]Brito, Matheus B. [UNESP]Bonfim, José V. A. [UNESP]Gotardi, Gisele C. [UNESP]Kuga, Gabriel K. [UNESP]Rodrigues, Sérgio T. [UNESP]2019-10-06T17:09:20Z2019-10-06T17:09:20Z2019-07-13info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article227-234http://dx.doi.org/10.1016/j.neulet.2019.03.004Neuroscience Letters, v. 705, p. 227-234.1872-79720304-3940http://hdl.handle.net/11449/19031910.1016/j.neulet.2019.03.0042-s2.0-85065418483Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNeuroscience Lettersinfo:eu-repo/semantics/openAccess2024-04-24T18:53:21Zoai:repositorio.unesp.br:11449/190319Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-24T18:53:21Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
title |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
spellingShingle |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults Polastri, Paula F. [UNESP] Elderly Eye movements Postural control Saccades Semi tandem stance |
title_short |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
title_full |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
title_fullStr |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
title_full_unstemmed |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
title_sort |
Semi tandem base of support degrades both saccadic gaze control and postural stability particularly in older adults |
author |
Polastri, Paula F. [UNESP] |
author_facet |
Polastri, Paula F. [UNESP] Barbieri, Fabio A. [UNESP] Brito, Matheus B. [UNESP] Bonfim, José V. A. [UNESP] Gotardi, Gisele C. [UNESP] Kuga, Gabriel K. [UNESP] Rodrigues, Sérgio T. [UNESP] |
author_role |
author |
author2 |
Barbieri, Fabio A. [UNESP] Brito, Matheus B. [UNESP] Bonfim, José V. A. [UNESP] Gotardi, Gisele C. [UNESP] Kuga, Gabriel K. [UNESP] Rodrigues, Sérgio T. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Polastri, Paula F. [UNESP] Barbieri, Fabio A. [UNESP] Brito, Matheus B. [UNESP] Bonfim, José V. A. [UNESP] Gotardi, Gisele C. [UNESP] Kuga, Gabriel K. [UNESP] Rodrigues, Sérgio T. [UNESP] |
dc.subject.por.fl_str_mv |
Elderly Eye movements Postural control Saccades Semi tandem stance |
topic |
Elderly Eye movements Postural control Saccades Semi tandem stance |
description |
Differences in the postural stabilization of older and young adults have been shown to be task-dependent on both visual and postural challenges; however, the gaze behavior during such tasks has rarely been examined. This study investigated the effects of horizontal and vertical saccades on gaze control, center of pressure (CoP) and head displacement of young and older adults on different bases of support. Ten young adults (20.7 ± 3.4 years) and ten older adults (71.6 ± 3.1 years) remained in an upright stance on a force platform wearing an eye-head tracker device. The participants performed 30-second trials according to two bases of support (feet apart and semi-tandem) and three gaze behavior (fixation, horizontal and vertical saccades) conditions. Older adults presented greater CoP amplitude (p < 0.002) and velocity (p < 0.001) (ML axis), and higher head amplitude (ML) (p < 0.002) than young adults during the semi tandem base. Head displacement of both groups presented higher velocity (ML axis) during horizontal (p < 0.001) and vertical saccades (p < 0.01) than the fixation task only on the semi tandem base. There was higher number of fixations (p < 0.001) and lower mean fixation duration (p < 0.001) on the semi-tandem base (p < 0.05). The results showed higher gaze latency variability in vertical saccades for older adults (p < 0.01). Challenging postural tasks may alter postural adjustments and gaze control during saccadic tasks. Particularly, the greater postural instability of older adults increased the gaze latency variability during saccadic tasks, suggesting some deterioration in the posture-gaze relation with aging. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T17:09:20Z 2019-10-06T17:09:20Z 2019-07-13 |
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/10.1016/j.neulet.2019.03.004 Neuroscience Letters, v. 705, p. 227-234. 1872-7972 0304-3940 http://hdl.handle.net/11449/190319 10.1016/j.neulet.2019.03.004 2-s2.0-85065418483 |
url |
http://dx.doi.org/10.1016/j.neulet.2019.03.004 http://hdl.handle.net/11449/190319 |
identifier_str_mv |
Neuroscience Letters, v. 705, p. 227-234. 1872-7972 0304-3940 10.1016/j.neulet.2019.03.004 2-s2.0-85065418483 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Neuroscience Letters |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
227-234 |
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 |
|
_version_ |
1803046836543422464 |