简介:保护野生动物就是保护我们共同的家园,为体现中国政府保护野生动物,保护人类共同家园的决心和成就,国家邮政局于2000年2月25日发行(国家重点保护野生动物)(1级)(一)特种邮票小版张1种。小版张由8种动物图案的邮票和上下两种无面值过桥动物图组成,共描绘10种中国珍稀动物。小版张是近年来邮市低迷中.集邮者喜欢收集的邮品。小版张往往由连印邮票组成.比如1998年的《镜泊湖》,全套4枚,整版16枚。近年发行的小版张抗跌性能强,一般市场价都在面值以上。
简介:Purpose:Thisstudyaimstoanalyzetheeffectsofa3-monthvigorousphysicalactivity(VPA)interventiononeatingbehaviorandbodycompositioninoverweightandobesechildrenandadolescents.Methods:Forty-sevenparticipants(7–16years)tookpartinthestudy:28wereassignedtotheinterventiongroup(IG)(10boysand18girls)and19inacontrolgroup(CG)(8boysand11girls).Bodycomposition(dual-energyX-rayabsorptiometry),anthropometrics(bodymass,height,andbodymassindex(BMI)),andeatingbehaviortraits(Three-FactorEatingQuestionnaire-R21C)weredeterminedbeforeandaftertheVPAintervention.Results:AdecreaseinthepercentageofbodyfatandBMI(-2.8%and-1.8%,respectively),andanincreaseinmostleanmassvariableswerefoundintheIG(allp≤0.05).Inrelationtotheeatingbehaviortraits,IGsubjectsshoweda14%reductionintheEmotionalEatingscore(p=0.04),whileCognitiveRestraintscoredidnotchangeaftertheVPAintervention.ThebaselinefactorsofthequestionnairepredictedchangesinbodymassandfatmassvariablesonlyintheCG.Conclusion:A3-monthVPAinterventioninfluencedeatingbehaviorsofoverweightorobeseyoung,especiallytheEmotionalEatingfactor,inthepresenceoffavorablebodycompositionchanges.
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.