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简介：【赏析】吉姆·罗恩是国际知名的商业思想家、美国JimRohn培训机构的创办人。他也是当今世界最受欢迎的企业界领袖之一，经常为顶级的销售组织和管理团队开办培训课程，并常受邀到全球各大企业去演讲。在这篇“改变始于选择”一文中，吉姆·罗恩把生活比喻成选择题，

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简介：2016年6月12日晚,发生在美国奥兰多市的一件枪击案震惊了全球.这件导致上百人伤亡的事件让人寒心.在人们伸张正义、呼吁控枪之际,一首名为'Change'的歌犹如严冬的炉火温暖了人们受伤的心.值得一提的是,这首歌的演唱者、美国知名歌手ChristinaAguilera决定将歌曲的全部收益都捐赠给此次枪击案的遇难者家庭,她的这一举动让人倍感温馨.

简介：Someconsequencesofglobalwarmingareunambiguously1)bad.Risingsealevelscan’tdoanybodyanygood.Norcanhighertemperaturesinhotterbitsoftheworld.ButthewarmingoftheArcticisnotquitesoclear-cut.Mostpeoplefearit,butsomemayseereasontowelcomeit.2)

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简介：Inthepast,Americanfamiliestendedtobequitelarge.Parentsraisingfiveormorechildrenwerecommon.Overtheyears,familieshavebecomesmaller.Onereasonforthisisanincreaseinthecostofliving.

简介：近日，美国研究人员称，世界上人口最密集的一些地区的河流出现了流量下降的情况，而这大多是由气候变化所致。如果再加上筑坝、灌溉、以及其他水资源利用的影响，这些变化会对这些地区未来的食物和水源供应构成威胁。

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简介：Itisbelievedthathumanancestorsevolvedtheabilitytorunbipedallyapproximately2millionyearsago.Thisformoflocomotionmayhavebeenimportanttooursurvivalandlikelyhasinfluencedtheevolutionofourbodyform.Asourbodieshaveadaptedtorun,itseemsunusualthatupto79%ofmoderndayrunnersareinjuredannually.Theetiologyoftheseinjuriesisclearlymultifactorial.However,1aspectofrunningthathassignificantlychangedoverthepast50yearsisthefootwearweuse.Modernrunningshoeshavebecomeincreasinglycushionedandsupportive,andhavechangedthewaywerun.Inparticular,theyhavealteredourfootstrikepatternfromapredominantlyforefootstrike(FFS)landingtoapredominantlyrearfootstrike(RFS)landing.Thischangealtersthewayinwhichthebodyisloadedandmaybecontributingtothehighrateofinjuriesrunnersexperiencewhileengagedinanactivityforwhichtheywereadapted.Inthispaper,wewillexaminethebenefitsofbarefootrunning(typicallyanFFSpattern),andcomparethelowerextremitymechanicsbetweenFFSandRFS.Theimplicationsofthesemechanicaldifferences,intermsofinjury,willbediscussed.WewillthenprovideevidencetosupportourcontentionthatFFSprovidesanoptimalmechanicalenvironmentforspecificfootandanklestructures,suchastheheelpad,theplantarfascia,andtheAchillestendon.Theimportanceoffootwearwillthenbeaddressed,highlightingitsinteractionwithstrikepatternonmechanics.Thisanalysiswillunderscorewhyfootwearmatterswhenassessingmechanics.Finally,properpreparationandsafetransitiontoanFFSpatterninminimalshoeswillbeemphasized.Throughthediscussionofthecurrentliterature,wewilldevelopajustificationforreturningtorunninginthewayforwhichwewereadaptedtoreducerunning-relatedinjuries.

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简介：Background:Physicalactivity(PA)duringpregnancyprovidesphysicalandpsychologicalbenefitsformotherandchild.U.S.guidelinesrecommend≥30minofmoderateexerciseforhealthypregnantwomenmostdaysoftheweek;however,mostwomendonotmeettheserecommendations.Theoryassistsinidentifyingsalientdeterminantsofhealthbehaviortoguidehealthpromotioninterventions;however,theapplicationoftheorytoexaminePAamongpregnantwomenhasnotbeenexaminedcohesivelyamongmultiplelevelsofinfluence(e.g.,intrapersonal,interpersonal,neighborhood/environmental,andorganizational/political).Subsequently,thissystematicreviewaimstoidentifyandevaluatetheuseofhealthbehaviortheoryinstudiesthatexaminePAduringpregnancy.Methods:ArticlespublishedbeforeJuly2014wereobtainedfromPubMedandWebofScience.Inclusioncriteriaappliedwere:(1)empiricallybased;(2)peer-reviewed;(3)measuredfactorsrelatedtoPA;(4)comprisedapregnantsample;and(5)appliedtheory.Fourteenstudieswereincluded.Eachstudy'sapplicationoftheoryandtheoreticalconstructswereevaluated.Results:VarioustheorieswereutilizedtoexplainandpredictPAduringpregnancy;yet,themajorityofthesestudiesonlyfocusedonintrapersonalleveldeterminants.Fivetheoreticalframeworkswereappliedacrossthestudies—allbutoneattheintrapersonallevel.Fewdeterminantsidentifiedwerefromtheinterpersonal,neighborhood/environmental,ororganizational/politicallevels.Conclusion:ThissystematicreviewsynthesizedtheliteratureontheoreticalconstructsrelatedtoPAduringpregnancy.Interpersonal,community,andsocietallevelsremainunderstudied.Futureresearchshouldemploytheory-drivenmulti-leveldeterminantsofPAtoreflecttheinteractingfactorsinfluencingPAduringthiscriticalperiodinthelifecourse.

简介：BackgroundTraditional垂直、轮流出现方面的整个身体颤动(WBV)能有效地改进肌肉力量性能，但是为提高change-of-direction(货到付款)有有限功效能力。特别地为每条腿向运动的各种各样的方向提供更高、特殊的频率的新奇双板的WBV可以在肌肉力量和短弄短的周期功效贡献货到付款能力上引起更好尖锐的效果。因此，这研究的目的是调查双频率或单个频率的WBV的尖锐效果在上蹲跳(SJ)，countermovement跳(CMJ)，怪癖的利用比率(EUR)，，和4min部分在一台双板的WBV机器上与WBV协议的3种类型蹲包括有收到35Hz的主导的腿和收到45Hz的非主导的腿的1个双频率的WBV协议(DFW)，并且2single-fp=0.008；CMJ：p<0.001)，但是显著地没改变EUR(p>0.05)。另外，仅仅DFW显著地改进了双频率的WBV会议改进了在橄榄球播放器的垂直的跳和货到付款能力的货到付款能力(p=0.001).ConclusionA4min，建议这能是为运动员的一个潜在的热身运动协议。