摘要
Background:Giventhelowlevelsofphysicalactivity(PA)amongadolescentgirlsintheUS,thereisaneedtoidentifytoolstomotivateincreasedPA.AlthoughthereislimitedevidencethatadolescentstransferPAfromonecontexttoanother,exergames(i.e.,videogamesthatrequiregrossmotoractivity)mayactasagatewaytopromoteoverallPAoutsidegameplay.Thepurposeofthisstudywastoexaminepotentialtransfereffects(i.e.,influencesonexternalbehaviorsandpsychologicalconstructs)ofa12-weekexergaminginterventiononadolescentgirls’PA,screentime,andself-efficacytowardPA,aswellastheintrinsicmotivationofexergaming.Methods:Participantswere37girlsaged14–18years(65%AfricanAmerican,35%white)whowereoverweightorobese(bodymassindex≥85thpercentile)andwererecruitedfromthecommunityviaschool,physicians,newsmedia,andsocialmediawebsites.Adolescentswererandomlyassignedtoa12-weekgroupexergamingintervention(thirty-six60minsessionsofgroup-baseddanceexergaminginaresearchlaboratoryusingKinectforXbox360(MicrosoftCorporation,Redmond,WA,USA))ortoano-treatmentcontrolgroup.OutcomevariablesincludedobjectivelymeasuredPA(total)andself-reportedleisure-timePA(discretionarytimeonly)1weekbeforevs.1weekaftertheintervention;selectedtypeandintensityofPAwhenplacedinagymsettingfor30min('cardiofreechoice');screentime;self-efficacytowardPA;andintrinsicmotivationtowardexergaming.Results:Attendanceattheexergamingsessionswashigh(80%).Comparedwiththecontrolgroup,theinterventiongroupself-reportedanincreaseinPA(p=0.035)andfewerhourswatchingtelevisionorvideos(p=0.01)aftertheintervention,buttherewerenosignificantdifferencesinsedentary,light,moderate,orvigorousPAmeasuredbyaccelerometry.Theinterventiongroupsignificantlyimprovedself-efficacytowardPA(p=0.028).Theinterventiongrouphighlyratedintrinsicmotivationtowardexergaming.Conclusi
出版日期
2017年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
