Cargando…

Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study

In daily life, mobility requires walking while performing a cognitive or upper-extremity motor task. Although previous studies have evaluated the effects of dual tasks on gait performance, few studies have evaluated cortical activation and its association with gait disturbance during dual tasks. In...

Descripción completa

Detalles Bibliográficos
Autores principales: Lu, Chia-Feng, Liu, Yan-Ci, Yang, Yea-Ru, Wu, Yu-Te, Wang, Ray-Yau
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4469417/
https://www.ncbi.nlm.nih.gov/pubmed/26079605
http://dx.doi.org/10.1371/journal.pone.0129390
_version_ 1782376621008748544
author Lu, Chia-Feng
Liu, Yan-Ci
Yang, Yea-Ru
Wu, Yu-Te
Wang, Ray-Yau
author_facet Lu, Chia-Feng
Liu, Yan-Ci
Yang, Yea-Ru
Wu, Yu-Te
Wang, Ray-Yau
author_sort Lu, Chia-Feng
collection PubMed
description In daily life, mobility requires walking while performing a cognitive or upper-extremity motor task. Although previous studies have evaluated the effects of dual tasks on gait performance, few studies have evaluated cortical activation and its association with gait disturbance during dual tasks. In this study, we simultaneously assessed gait performance and cerebral oxygenation in the bilateral prefrontal cortices (PFC), premotor cortices (PMC), and supplemental motor areas (SMA), using functional near-infrared spectroscopy, in 17 young adults performing dual tasks. Each participant was evaluated while performing normal-pace walking (NW), walking while performing a cognitive task (WCT), and walking while performing a motor task (WMT). Our results indicated that the left PFC exhibited the strongest and most sustained activation during WCT, and that NW and WMT were associated with minor increases in oxygenation levels during their initial phases. We observed increased activation in channels in the SMA and PMC during WCT and WMT. Gait data indicated that WCT and WMT both caused reductions in walking speed, but these reductions resulted from differing alterations in gait properties. WCT was associated with significant changes in cadence, stride time, and stride length, whereas WMT was associated with reductions in stride length only. During dual-task activities, increased activation of the PMC and SMA correlated with declines in gait performance, indicating a control mechanism for maintaining gait performance during dual tasks. Thus, the regulatory effects of cortical activation on gait behavior enable a second task to be performed while walking.
format Online
Article
Text
id pubmed-4469417
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher Public Library of Science
record_format MEDLINE/PubMed
spelling pubmed-44694172015-06-22 Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study Lu, Chia-Feng Liu, Yan-Ci Yang, Yea-Ru Wu, Yu-Te Wang, Ray-Yau PLoS One Research Article In daily life, mobility requires walking while performing a cognitive or upper-extremity motor task. Although previous studies have evaluated the effects of dual tasks on gait performance, few studies have evaluated cortical activation and its association with gait disturbance during dual tasks. In this study, we simultaneously assessed gait performance and cerebral oxygenation in the bilateral prefrontal cortices (PFC), premotor cortices (PMC), and supplemental motor areas (SMA), using functional near-infrared spectroscopy, in 17 young adults performing dual tasks. Each participant was evaluated while performing normal-pace walking (NW), walking while performing a cognitive task (WCT), and walking while performing a motor task (WMT). Our results indicated that the left PFC exhibited the strongest and most sustained activation during WCT, and that NW and WMT were associated with minor increases in oxygenation levels during their initial phases. We observed increased activation in channels in the SMA and PMC during WCT and WMT. Gait data indicated that WCT and WMT both caused reductions in walking speed, but these reductions resulted from differing alterations in gait properties. WCT was associated with significant changes in cadence, stride time, and stride length, whereas WMT was associated with reductions in stride length only. During dual-task activities, increased activation of the PMC and SMA correlated with declines in gait performance, indicating a control mechanism for maintaining gait performance during dual tasks. Thus, the regulatory effects of cortical activation on gait behavior enable a second task to be performed while walking. Public Library of Science 2015-06-16 /pmc/articles/PMC4469417/ /pubmed/26079605 http://dx.doi.org/10.1371/journal.pone.0129390 Text en © 2015 Lu et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
spellingShingle Research Article
Lu, Chia-Feng
Liu, Yan-Ci
Yang, Yea-Ru
Wu, Yu-Te
Wang, Ray-Yau
Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title_full Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title_fullStr Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title_full_unstemmed Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title_short Maintaining Gait Performance by Cortical Activation during Dual-Task Interference: A Functional Near-Infrared Spectroscopy Study
title_sort maintaining gait performance by cortical activation during dual-task interference: a functional near-infrared spectroscopy study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4469417/
https://www.ncbi.nlm.nih.gov/pubmed/26079605
http://dx.doi.org/10.1371/journal.pone.0129390
work_keys_str_mv AT luchiafeng maintaininggaitperformancebycorticalactivationduringdualtaskinterferenceafunctionalnearinfraredspectroscopystudy
AT liuyanci maintaininggaitperformancebycorticalactivationduringdualtaskinterferenceafunctionalnearinfraredspectroscopystudy
AT yangyearu maintaininggaitperformancebycorticalactivationduringdualtaskinterferenceafunctionalnearinfraredspectroscopystudy
AT wuyute maintaininggaitperformancebycorticalactivationduringdualtaskinterferenceafunctionalnearinfraredspectroscopystudy
AT wangrayyau maintaininggaitperformancebycorticalactivationduringdualtaskinterferenceafunctionalnearinfraredspectroscopystudy