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An fNIRS Investigation of Discrete and Continuous Cognitive Demands During Dual-Task Walking in Young Adults

dc.contributor.authorRahman T.T
dc.contributor.authorPolskaia N
dc.contributor.authorSt-Amant G
dc.contributor.authorSalzman T
dc.contributor.authorVallejo D.T
dc.contributor.authorLajoie Y
dc.contributor.authorFraser S.A.
dc.date.accessioned2022-09-14T14:33:28Z
dc.date.available2022-09-14T14:33:28Z
dc.date.created2021
dc.identifier.issn16625161
dc.identifier.urihttp://hdl.handle.net/11407/7381
dc.descriptionIntroduction: Dual-task studies have demonstrated that walking is attention-demanding for younger adults. However, numerous studies have attributed this to task type rather than the amount of required to accomplish the task. This study examined four tasks: two discrete (i.e., short intervals of attention) and two continuous (i.e., sustained attention) to determine whether greater attentional demands result in greater dual-task costs due to an overloaded processing capacity. Methods: Nineteen young adults (21.5 ± 3.6 years, 13 females) completed simple reaction time (SRT) and go/no-go (GNG) discrete cognitive tasks and n-back (NBK) and double number sequence (DNS) continuous cognitive tasks with or without self-paced walking. Prefrontal cerebral hemodynamics were measured using functional near-infrared spectroscopy (fNIRS) and performance was measured using response time, accuracy, and gait speed. Results: Repeated measures ANOVAs revealed decreased accuracy with increasing cognitive demands (p = 0.001) and increased dual-task accuracy costs (p < 0.001). Response times were faster during the single compared to dual-tasks during the SRT (p = 0.005) and NBK (p = 0.004). DNS gait speed was also slower in the dual compared to single task (p < 0.001). Neural findings revealed marginally significant interactions between dual-task walking and walking alone in the DNS (p = 0.06) and dual -task walking compared to the NBK cognitive task alone (p = 0.05). Conclusion: Neural findings suggest a trend towards increased PFC activation during continuous tasks. Cognitive and motor measures revealed worse performance during the discrete compared to continuous tasks. Future studies should consider examining different attentional demands of motor tasks. Copyright © 2021 Rahman, Polskaia, St-Amant, Salzman, Vallejo, Lajoie and Fraser.eng
dc.language.isoeng
dc.publisherFrontiers Media S.A.
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85120473759&doi=10.3389%2ffnhum.2021.711054&partnerID=40&md5=cb67c8e1e75c95f5b803471dd1d42b87
dc.sourceFrontiers in Human Neuroscience
dc.titleAn fNIRS Investigation of Discrete and Continuous Cognitive Demands During Dual-Task Walking in Young Adults
dc.typeArticle
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programIngeniería de Telecomunicaciones
dc.type.spaArtículo
dc.identifier.doi10.3389/fnhum.2021.711054
dc.subject.keywordCognitive demandeng
dc.subject.keywordContinuous cognitive taskeng
dc.subject.keywordDiscrete cognitive taskeng
dc.subject.keywordDual taskeng
dc.subject.keywordfNIRS (functional near infrared spectroscopy)eng
dc.subject.keywordOverground walkingeng
dc.subject.keywordPrefrontal cortex (PFC)eng
dc.subject.keywordYounger adultseng
dc.subject.keywordAdulteng
dc.subject.keywordArticleeng
dc.subject.keywordAttentioneng
dc.subject.keywordClinical articleeng
dc.subject.keywordControlled studyeng
dc.subject.keywordFemaleeng
dc.subject.keywordFunctional near-infrared spectroscopyeng
dc.subject.keywordHemodynamicseng
dc.subject.keywordHumaneng
dc.subject.keywordHuman experimenteng
dc.subject.keywordPrefrontal cortexeng
dc.subject.keywordSimple reaction timeeng
dc.subject.keywordWalking speedeng
dc.subject.keywordYoung adulteng
dc.relation.citationvolume15
dc.publisher.facultyFacultad de Ingenierías
dc.affiliationRahman, T.T., Interdisciplinary School of Health Sciences, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
dc.affiliationPolskaia, N., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
dc.affiliationSt-Amant, G., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
dc.affiliationSalzman, T., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
dc.affiliationVallejo, D.T., Electronics and Telecommunications Engineering Department, Universidad de Medellín, Medellín, Colombia
dc.affiliationLajoie, Y., School of Human Kinetics, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
dc.affiliationFraser, S.A., Interdisciplinary School of Health Sciences, Faculty of Health Science, University of Ottawa, Ottawa, ON, Canada
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dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.type.driverinfo:eu-repo/semantics/article
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dc.identifier.repourlrepourl:https://repository.udem.edu.co/
dc.identifier.instnameinstname:Universidad de Medellín


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