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Prefrontal cortex involvement during dual-task stair climbing in healthy older adults: An fNIRS study

dc.creatorSalzman T.
dc.creatorAboualmagd A.
dc.creatorBadawi H.
dc.creatorTobón-Vallejo D.
dc.creatorKim H.
dc.creatorDahroug L.
dc.creatorLaamarti F.
dc.creatorEl Saddik A.
dc.creatorFraser S.
dc.date2021
dc.date.accessioned2021-02-05T14:57:39Z
dc.date.available2021-02-05T14:57:39Z
dc.identifier.issn20763425
dc.identifier.urihttp://hdl.handle.net/11407/5898
dc.descriptionExecutive function and motor control deficits adversely affect gait performance with age, but the neural correlates underlying this interaction during stair climbing remains unclear. Twenty older adults (72.7 ± 6.9 years) completed single tasks: standing and responding to a response time task (SC), ascending or descending stairs (SMup, SMdown); and a dual-task: responding while ascending or descending stairs (DTup, DTdown). Prefrontal hemodynamic response changes (∆HbO2, ∆HbR) were examined using functional near-infrared spectroscopy (fNIRS), gait speed was measured using in-shoe smart insoles, and vocal response time and accuracy were recorded. Findings revealed increased ∆HbO2 (p = 0.020) and slower response times (p < 0.001) during dual-versus single tasks. ∆HbR (p = 0.549), accuracy (p = 0.135) and gait speed (p = 0.475) were not significantly different between tasks or stair climbing conditions. ∆HbO2 and response time findings suggest that executive processes are less efficient during dual-tasks. These findings, in addition to gait speed and accuracy maintenance, may provide insights into the neural changes that precede performance declines. To capture the subtle differences between stair ascent and descent and extend our understanding of the neural correlates of stair climbing in older adults, future studies should examine more difficult cognitive tasks. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
dc.language.isoeng
dc.publisherMDPI AG
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85099388962&doi=10.3390%2fbrainsci11010071&partnerID=40&md5=9f2a8ed77da610370d7f31037fbbd180
dc.sourceBrain Sciences
dc.subjectCognitive agingspa
dc.subjectCognitive functionspa
dc.subjectExecutive functionspa
dc.subjectFunctional near-infrared spectroscopy (fNIRS)spa
dc.subjectGaitspa
dc.subjectNeuroimagingspa
dc.subjectOlder adultspa
dc.subjectPrefrontal cortex (PFC)spa
dc.subjectStair climbingspa
dc.titlePrefrontal cortex involvement during dual-task stair climbing in healthy older adults: An fNIRS study
dc.typeArticleeng
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programIngeniería de Sistemasspa
dc.identifier.doi10.3390/brainsci11010071
dc.subject.keywordagedeng
dc.subject.keywordarticleeng
dc.subject.keywordcognitive agingeng
dc.subject.keywordcontrolled studyeng
dc.subject.keywordexecutive functioneng
dc.subject.keywordfemaleeng
dc.subject.keywordfunctional near-infrared spectroscopyeng
dc.subject.keywordhemodynamicseng
dc.subject.keywordhumaneng
dc.subject.keywordhuman experimenteng
dc.subject.keywordmaleeng
dc.subject.keywordneuroimagingeng
dc.subject.keywordprefrontal cortexeng
dc.subject.keywordreaction timeeng
dc.subject.keywordstair climbingeng
dc.subject.keywordwalking speedeng
dc.relation.citationvolume11
dc.relation.citationissue1
dc.relation.citationstartpage1
dc.relation.citationendpage14
dc.publisher.facultyFacultad de Ingenieríasspa
dc.affiliationSalzman, T., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationAboualmagd, A., Interdisciplinary School of Health Sciences, Faculty of Health Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationBadawi, H., Multimedia Communications Research Laboratory (MCRLab), School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationTobón-Vallejo, D., Electronics and Telecommunications Engineering Department, Universidad de Medellín, Medellín, 050030, Colombia
dc.affiliationKim, H., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationDahroug, L., Interdisciplinary School of Health Sciences, Faculty of Health Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationLaamarti, F., Multimedia Communications Research Laboratory (MCRLab), School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationEl Saddik, A., Multimedia Communications Research Laboratory (MCRLab), School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
dc.affiliationFraser, S., Interdisciplinary School of Health Sciences, Faculty of Health Science, University of Ottawa, Ottawa, ON K1N 7K4, Canada
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