简介：Background:Lately,physicalactivity(PA)inyounggirlshasbeenfrequentlydiscussed,thuswewereinterestedtoexaminewhetheramentaltraininginterventioncanincreasethelevelofPAinyounggirls.Methods:Asampleof56girlsaged15.4±0.3years(mean±SD)wasassignedtoeithertheinterventionorcontrolgroup.Wethenconducteda6-weekmentalimagerytrainingprogramonyoungfemaleparticipants.PAwasevaluatedwithobjectiveaccelerometermonitors.Physicalself-conceptwasalsoassessedinallparticipants.Results:Youngfemales'PAincreasedafteracourseofmentaltrainingcomparedtofemaleparticipantsincontrolgroup.Furthermore,physicalself-conceptimprovedrelatedtomentaltrainingprogram.Conclusion:ExerciseimagerymaybeaneffectivemethodofPAincreasebesidespsychologicalenhancementinyounggirls.
简介：Background:Athletes,coaches,sportpsychologypractitioners,andresearcherssuggestthatmentaltoughnessrepresentsanimportantconstructthatisassociatedwithathleticperformance.Unfortunately,theabsenceofreal-worldperformanceasadependentvariablehaslimitedourabilitytosubstantiatethisclaim.Theconcernofalackofecologicallyvalidmeasuresofsportsperformancemightbeaddressedbyexaminingtherelationshipbetweenmentaltoughnessandsportsperformanceusingastandardizedmeasureofpersonalbest(PB)triathlontimeandavalidatedunidimensionalmeasureofmentaltoughness.Methods:Threehundredandsixteentriathletescompletedthe8-itemmentaltoughnessindex(MTI),reportedtheirage,andprovidedaPBOlympicdistancetriathlontimeandthetotalnumberoftriathlonstheyhadcompletedtodate.Giventhatmalesaretypicallyquickerthanfemales,astandardizedtimewascalculatedbydividingthePBbythecurrentOlympicrecordforgender;wealsohypothesizedthatmoreexperiencedtriathleteswouldreportquickerPBtimesbecauseofgreaterfrequencyanddurationoftraining.Oncewehadcontrolledforgenderandexperience,wepredictedthatmentaltoughnesswouldbenegativelyassociatedwithtriathlontimeandthesizeoftherelationshipwouldbeofamoderatemagnitude.Results:Resultsrevealedsmall-tomoderate-sizednegativerelationshipsbetweenbothcompletednumberoftriathlonsandmentaltoughnesswithstandardizedPBtime.Conclusion:ThehierarchicalregressionanalysisshowedthatmentaltoughnessprovidedauniquecontributiontothevariabilityinstandardizedOlympictriathlonPBaftercontrollingforthetotalnumberoftriathlonscompleted.
简介：TherecentpublicationbyChekroudetal.inLancetPsychiatryfocusesontherelationshipbetweenphysicalexerciseandmentalhealth.Mentalhealthisdefinedasoptimalpersonalfunctioning"resultinginproductiveactivities,fulfillingrelationshipswithotherpeople,andtheabilitytoadapttochangeandtocopewithadversity".(p.4)Recently,mentalhealthhasnolongerbeendescribedasadichotomousstatebutasacontinuum,withpersonalmentalstatesrangingfromhighlyfunctionaltomentallyill.
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mental health in 1.2 million individuals in the USA between 2011 and 2015:A cross-sectional study",by Chekroud et al.,published in Lancet Psychiat" title="Is regular physical activity a key to mental health? Commentary on "Association between physical exercise and mental health in 1.2 million individuals in the USA between 2011 and 2015:A cross-sectional study",by Chekroud et al.,published in Lancet Psychiat">