摘要
Purpose:Thepurposeofthisstudywastoinvestigatetheeffectofvariableintensitiesonasimplememoryrecognitiontaskduringexercise.Methods:Twentyactiveparticipantstookpartininitialtesting,afamiliarizationtrialandthenfour60mincyclinginterventionsinarandomizedorder.Interventionsconsistedofnoexercise(control),constantexerciseat90%ventilatorythreshold(constant)and2trialsthatinitiallymimickedtheconstanttrial,butthenincludedperiodsofhigh(90%VO2peak)andlowintensities(50%VO2peak).Cardiorespiratorymeasuresandcapillarybloodsamplesweretakenthroughout.Ashorttablet-basedcognitivetaskwascompletedpriortoandduring(50and55minintoexercise)eachintervention.Results:Theexerciseconditionsfacilitatedresponsetime(p=0.009),althoughtheextentofthiseffectwasnotasstronginthevariableexerciseconditions(p=0.011–0.089).Highintensityexerciseperiodsresultedinsomecognitiveregressionbacktowardscontroltrialperformance.Elevationsincardiorespiratorymeasuresandperiodsofhypocapniacouldnotexplainchangesincognitiveperformance.Conclusion:Changesincognitiveperformancewithvariationsinexerciseintensityarelikelytohaveimplicationsforsportandoccupationalsettings.Thetimingofcognitiveteststoexerciseintensitychangesaswellasuseofshortcognitiveassessmentswillbeimportantforfuturework.
出版日期
2016年03月13日(中国期刊网平台首次上网日期,不代表论文的发表时间)