简介:Purpose:Theprimaryaimofthisstudywastodevelopanassessmentofthefundamental,combined,andcomplexmovementskillsrequiredtosupportchildhoodphysicalliteracy.Thesecondaryaimwastoestablishthefeasibility,objectivity,andreliabilityevidencefortheassessment.Methods:Anexpertadvisorygrouprecommendedacourseformatfortheassessmentthatwouldrequirechildrentocompleteaseriesofdynamicmovementskills.Criterion-referencedskillperformanceandcompletiontimeweretherecommendedformsofevaluation.Children,8–12yearsofage,self-reportedtheirageandgenderandthencompletedthestudyassessmentswhileattendinglocalschoolsordaycamps.FacevaliditywaspreviouslyestablishedthroughaDelphiexpert(n=19,21%female)reviewprocess.Convergentvaliditywasevaluatedbyageandgenderassociationswithassessmentperformance.Inter-andintra-rater(n=53,34%female)objectivityandtest–retest(n=60,47%female)reliabilitywereassessedthroughrepeatedtestadministration.Results:Mediantotalscorewas21of28points(range5–28).Mediancompletiontimewas17s.Totalscoreswerefeasibleforall995childrenwhoself-reportedageandgender.Totalscoredidnotdifferbetweeninsideandoutsideenvironments(95%confidenceinterval(CI)ofdifference:-0.7to0.6;p=0.91)orwith/withoutfootwear(95%CIofdifference:-2.5to1.9;p=0.77).Olderage(p<0.001,η2=0.15)andmalegender(p<0.001,η2=0.02)wereassociatedwithahighertotalscore.Inter-raterobjectivityevidencewasexcellent(intraclasscorrelationcoefficient(ICC)=0.99)forcompletiontimeandsubstantialforskillscore(ICC=0.69)for104attemptsby53children(34%female).Intra-raterobjectivitywasmoderate(ICC=0.52)forskillscoreandexcellentforcompletiontime(ICC=0.99).Reliabilitywasexcellentforcompletiontimeoverashort(2–4days;ICC=0.84)orlong(8–14days;ICC=0.82)interval.Skillscorereliabilitywasmoderate(ICC=0.46)overashortinterval,a
简介:2017年4月20日,索尼(中国)有限公司正式发布新款索尼全画幅微单?相机A9(型号名:ILCE-9)与超远摄变焦镜头FE100-400mmF4.5-5.6GMOSS(SEL100400GM)。A9作为索尼首款内置堆栈式CMOS影像传感器的全画幅微单?相机,像素约为2420万,配备了改进的BIONZX影像处理器和前端LSI。新款索尼G大师镜头FE100-400mmF4.5-5.6GMOSS则是一款从中心到边缘均具备锐利画质表现的超远摄变焦镜头,双线性马达和直驱超声波马达保证了快速、精准、安静的自动对焦。SEL100400GM采用16组22片的复杂设计。搭载纳米抗反射涂层配合索尼全画幅微单?A9使生态及体育题材的拍摄可另辟蹊径,为用户提供更