简介：<正>YoucouldprobablycountontwohandsthenumberoftimesthatI’veseenthesuncomeup.ItissoforeigntomethatwhenIheardfromexpatsinChinathatoneofthebestlocalsightshadtobeviewedjustaftersunrise,IreallyfeltthatwhateveritwashadtobetrulyspectacularorelseI’dgiveitamiss.ButwhenIwasassuredthatthiswouldbelikecomingtoBeijingandnotseeingTiananmenSquare,Igavein.Anyparkoropenareawoulddo,butIchosetogo

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简介：太极运动的架势比较平稳舒展，动作要求不僵不拘，符合人体的生理习惯，并且没有忽起忽落的明显变化和激烈的跳跃运动。所以，不同年龄、性别和体质的人，都可以参加锻炼；尤其是对体弱和患有一些慢性病的人，更是一种较好的体疗手段。

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简介：<正>Purpose:Thepurposeofthepresentstudywastoexaminetheeffectsofa24-weekTaiChiexerciseinterventiononbalanceandotherphysicalchangessuchasflexibilityandreactiontime(RT)amonghealthyoldermales.Methods:Thirty-eightmalesubjectsaged55—65yearswithoutpriorTaiChiexperiencewererecruitedfromalocalcommunityinShanghai,China.A60-minTaiChiexercisesessionwasperformedthreetimesaweekfor24weeks.ChangesinRT,sit-and-reachflexibilityandbalance(staticbalancewitheyesopenandclosedrespectively)weremeasuredbeforeandaftertheTaiChiintervention.Results:Afterthe24-weekTaiChiintervention,thechoiceRT(p<0.05)decreased,andsit-and-reachflexibilityimproved(p<0.01)overthepre-test(7.8±6.2vs.7.1±3.0cm).Swaylength,area,X-axisdeviationamplitudeandK-axisdeviationamplitudeperformancedecreasedsignificantlyaftertheinterventionwithadouble-footstancewitheyesopen(p<0.05).Swaylength,areaandaverageswayspeedshowedastatisticallysignificantdecreaseaftertheinterventionwiththedouble-footstancewitheyesclosed.Inthesingle-footstancewitheyesopencondition,swaylengthandaverageswayspeedshowedastatisticallysignificantdecrease(p<0.05).Conclusion:The24-weekTaiChiexerciseinterventionhadapositiveinfluenceonbalancecontrolinoldermales.

简介：AwarmwelcometothisspecialissueoftheJournalofSportandHealthScience,whichisdevotedtoTaiJiQuananditswiderangeofapplications.TaiJiQuanisauniqueaspectofChineseculture,withahistoryextendingbackseveralcenturies.1AlthoughitevolvedfromthemartialartofWushu,2trainingandpracticeofTaiJiQuaninvolvesynchronizedexecutionofbodilymovementswithdeliberateintentionandrhythmicbreathing.Forthisreason,ithasoftenbeenviewedasahealingartfornurturingthehumanbody,wardingoffdiseases,andenhancingoverallhealthandwell-being.TheuniquecombinationofthesemartialandhealingdimensionshasmadeTaiJiQuanadistinctiveexercisemodalitythatattractspractitionersofallagesfromallwalksoflife.

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简介：Mammaliantoothdevelopmentislargelydependentonsequentialandreciprocalepithelial-mesenchymalinteractions.Theseprocessesinvolveaseriesofinductiveandpermissiveinteractionsthatresultinthedetermination,differentiation,andorganizationofodontogenictissues.Multiplesignalingmolecules,includingBMPs,FGFs,Shh,andWntproteins,havebeenimplicatedinmediatingthesetissueinteractions.Transcriptionfactorsparticipateinepithelial-mesenchymalinteractionsvialinkingthesignalingloopsbetweentissuelayersbyrespondingtoinductivesignalsandregulatingtheexpressionofothersignalingmolecules.Adultstemcellsarehighlyplasticandmultipotent.Thesecellsincludingdentalpulpstemcellsandbonemarrowstromalcellscouldbereprogrammedintoodontogenicfateandparticipatedintoothformation.Recentprogressinthestudiesofmolecularbasisoftoothdevelopment,adultstemcellbiology,andregenerationwillprovidefundamentalknowledgefortherealizationofhumantoothregenerationinthenearfuture.

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简介：Background:NostudieshavecomparedeffectivenessofresistancetrainingandTaiJiexerciseonrelievingsymptomsofkneeosteoarthritis(OA).Thepurposeofthestudywastoevaluateeffectsofa10-weekTaiJiandresistancetraininginterventiononimprovingOAsymptomsandmobilityinseniorswithkneeOA.Methods:Thirty-oneseniors(60-85years)wererandomlyassignedtoaTaiJiprogram(n=12),aresistancetrainingprogram(n=13),andacontrolgroup(n=6).AllparticipantscompletedtheWesternOntarioandMcMaster(WOMAC)OsteoarthritisIndexandperformedthreephysicalperformancetests(6-minwalk,timed-up-and-go,andtimedstairclimbanddescent)beforeandafterthe10-weekintervention.Results:Theparticipantsintheresistancetraininggroupsignificantlyimprovedonthetimed-up-and-gotest(p<0.001),theWOMACpainsubscore(p=0.006),WOMACstiffnesssub-score(p<0.001),andWOMACphysicalfunctionsub-score(p=0.011).TheTaiJigroupsignificantlyimprovedonthetimed-up-and-gotest(p<0.001),butnotontheWOMACscores.Conclusion:ResistancetrainingwaseffectiveforimprovingmobilityandimprovingthesymptomsofkneeOA.TaiJiwasalsoeffectiveforimprovingmobility,butdidnotimprovekneeOAsymptoms.

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简介：Basedonthecavestrainobservationdatain2013atTaianseismicstation,weusetheVenedikovharmonicanalysismethodtocalculatethecavestrainmeasurementandphaselagofthetidefactor,andqualitativelyevaluatethestabilityofthetidalfactorforobservationaldataevaluation.Atthesametime,thetwomeasurementitemsoftheobservationinstrumentarecalculated,andthecorrelationstrainparametersareextractedandcompared.Onthisbasis,thestrainparametertimeseriescalculationiscarriedoutonthedataqualityofTaianseismicstation,whichisrelativelystable,andthe2setsofinstrumentsarecompared.Throughtheanalysis,itisfoundthatthestressfieldisabnormal,andthecorrespondingrelationshipbetweentheanomalyofthestressfieldandthegravityfieldiscomparedandanalyzed

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