简介:孔子是世界历史上最著名的教育家之一。两千多年来人们一直在纪念他。然而多年以来,世界各国很可能都是在一个错误的日子里举行纪念仪式的。
简介:Background:Overweightandobesityhasbecomeaseriouspublichealthprobleminmanypartsoftheworld.Studiessuggestthatmakingsmallchangesindailyactivitylevelssuchas"breaking-up"sedentarytime(i.e.,standing)mayhelpmitigatethehealthrisksofsedentarybehavior.Theaimofthepresentstudywastoexaminetimespentinstanding(determinedbycountthreshold),lying,andsittingpostures(determinedbyinclinometerfunction)viatheActiGraphGT3Xamongsedentaryadultswithdifferingweightstatusbasedonbodymassindex(BMI)categories.Methods:Participantsincluded22sedentaryadults(14men,8women;meanage26.5±4.1years).Allsubjectscompletedtheself-reportInternationalPhysicalActivityQuestionnairetodeterminetimespentsittingovertheprevious7days.Participantswereincludediftheyspentsevenormorehourssittingperday.PosturesweredeterminedwiththeActiGraphGT3Xinclinometerfunction.Participantswereinstructedtoweartheaccelerometerfor7consecutivedays(24haday).BMIwascategorizedas:18.5to<25kg/m2asnormal,25to<30kg/m2asoverweight,and≥30kg/m2asobese.Results:Participantsinthenormalweight(n=10)andoverweight(n=6)groupsspentsignificantlymoretimestanding(afteradjustmentformoderate-to-vigorousintensityphysicalactivityandwear-time)(6.7hand7.3hrespectively)andlesstimesitting(7.1hand6.9hrespectively)thanthoseinobese(n=6)categories(5.5hand8.0hrespectively)afteradjustmentforwear-time(p<0.001).Therewerenosignificantdifferencesinstandingandsittingtimebetweennormalweightandoverweightgroups(p=0.051andp=0.670respectively).Differenceswerenotsignificantamonggroupsforlyingtime(p=0.55).Conclusion:Thisstudydescribedposturalallocationsstanding,lying,andsittingamongnormalweight,overweight,andobesesedentaryadults.Theresultsprovideadditionalevidencefortheuseofincreasingstandingtimeinobesitypreventionstrategies.
简介:三毛和她的作品是整整一代人的青春与梦想。在一个寻常日子里,我来到被喻为'舟山归来不看岛'的浙江省舟山市,来拜谒万水千山走遍的女作家三毛的祖居。三毛祖居位于舟山市定海区小沙乡,与闻名的普陀山、朱家尖隔海相望。