Mental Fatigue Alters Cortical Activation and Psychological Responses, Impairing Performance in a Distance-Based Cycling Trial

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dc.citation.volumev. 9
dc.contributor.authorPires, Flávio de Oliveira [UNIFESP]
dc.contributor.authorSilva-Junior, Fernando Lopes e
dc.contributor.authorBrietzke, Cayque
dc.contributor.authorFranco-Alvarenga, Paulo Estevão
dc.contributor.authorPinheiro, Fabiano Aparecido
dc.contributor.authorFranca, Nanci M. de
dc.contributor.authorTeixeira, Silmar
dc.contributor.authorSantos, Tony Meireles
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.coverageLausanne
dc.date.accessioned2020-07-20T16:31:14Z
dc.date.available2020-07-20T16:31:14Z
dc.date.issued2018
dc.description.abstractPurpose: We sought to verify if alterations in prefrontal cortex (PFC) activation and psychological responses would play along with impairments in pacing and performance of mentally fatigued cyclists. Materials and Methods: Eight recreational cyclists performed two preliminary sessions to familiarize them with the rapid visual information processing (RVP) test, psychological scales and 20 km cycling time trial (TT20km) (session 1), as well as to perform a VO2MAX test (session 2). Thereafter, they performed a TT20km either after a RVP test (30 min) or a time-matched rest control session (session 3 and 4 in counterbalanced order). Performance and psychological responses were obtained throughout the TT20km while PFC electroencephalography (EEG) was obtained at 10 and 20 km of the TT20km and throughout the RVP test. Increases in EEG theta band power indicated a mental fatigue condition. Repeated-measures mixed models design and post-hoc effect size (ES) were used in comparisons. Results: Cyclists completed the trial ~2.7% slower in mental fatigue (34.3 ± 1.3 min) than in control (33.4 ± 1.1 min, p = 0.02, very large ES), with a lower WMEAN (224.5 ± 17.9 W vs. 240.2 ± 20.9 W, respectively; p = 0.03; extremely large ES). There was a higher EEG theta band power during RVP test (p = 0.03; extremely large ES), which remained during the TT20km (p = 0.01; extremely large ES). RPE increased steeper in mental fatigue than in control, together with isolated reductions in motivation at 2th km (p = 0.04; extremely large ES), felt arousal at the 2nd and 4th km (p = 0.01; extremely large ES), and associative thoughts to exercise at the 6th and 16th km (p = 0.02; extremely large ES) of the TT20km. Conclusions: Mentally fatigued recreational cyclists showed impaired performance, altered PFC activation and faster increase in RPE during a TT20km.en
dc.description.affiliationUniv Sao Paulo, Sch Arts Sci & Humanities, Exercise Psychophysiol Res Grp, Sao Paulo, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Human Movement Sci & Rehabil Program, Santos, Brazil
dc.description.affiliationFed Univ Piaui UFPI, Brain Mapping & Plast Lab LAMPLACE, Parnaiba, Brazil
dc.description.affiliationUniv Catolica Brasilia, Phys Educ Program, Brasilia, DF, Brazil
dc.description.affiliationUniv Fed Pernambuco, Phys Educ Program, Res Ctr Performance & Hlth, Pernambuco, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Human Movement Sci & Rehabil Program, Santos, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCNPq-Brazil
dc.description.sponsorshipFAPESP-Brazil
dc.description.sponsorshipIDCNPq: 480883/2013-0
dc.description.sponsorshipIDFAPESP: 2016/16496-3
dc.format.extent-
dc.identifierhttps://dx.doi.org/10.3389/fphys.2018.00227
dc.identifier.citationFrontiers In Physiology. Lausanne, v. 9, 2018.
dc.identifier.doi10.3389/fphys.2018.00227
dc.identifier.fileWOS000427621100001.pdf
dc.identifier.issn1664-042X
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55812
dc.identifier.wosWOS:000427621100001
dc.language.isoeng
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers In Physiology
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectFatigueen
dc.subjectMotivationen
dc.subjectEEGen
dc.subjectPacing strategyen
dc.subjectPrefrontal cortexen
dc.titleMental Fatigue Alters Cortical Activation and Psychological Responses, Impairing Performance in a Distance-Based Cycling Trialen
dc.typeinfo:eu-repo/semantics/article
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