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简介：贵州高职院体育文化建设仍处于初期阶段，存在着活动经费严重匮乏、活动模式呆板、管理方式陈旧、活动内容单一等问题，文章通过对贵州高职院体育文化存在问题的研究，提出贵州高职院体育文化建设发展的对策，主要是拓展高职院体育文化活动开展的经费来源，构建全新的高职院体育文化活动模式，创新高职院体育文化活动管理方式，丰富高职院体育文化活动内容．

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简介：<正>Background:Increasingcaloricexpenditureinphysicaleducationisconsideredaneffectiveschool-basedapproachtoaddressingthechildobesityepidemic.Thisstudywasdesignedtodeterminesynergisticinfluencesofstudentcharacteristicsandlessonfactorsoncaloricexpenditureinelementaryandmiddleschoolphysicaleducation.Methods:Thestudyusedamulti-leveldesign.Level-1factorsincludedpersonalcharacteristics:age,gender,andbodymassindex.Level-2factorsincludedlessonlength,content,andschoollevel.BasedontheCenterforDiseaseControlandPreventionage—genderadjustedgrowthchart,studentsin87classesfrom14elementaryand15middleschoolswerepre-screenedinto"Overweight","Healthyweight",or"Thin"groups.Oneboyandonegirlwererandomlyselectedfromeachgroupineachclassasdataproviders(264elementaryand294middleschoolstudents).Caloricexpenditurewasmeasuredin243physicaleducationlessonsusingaccelerometers.Results:Analysisofvariancerevealedandhierarchicallinearmodelingconfirmedseparateagebybodymassindex,agebygender,andcontentbylesson—lengthinteractioneffects,suggestingthatthepersonalandlessonfactorsinfluencedcaloricexpenditureindependently.Oldermaleandheavierstudentsburnedmorecaloriesinalllessons.Studentsburnedmorecaloriesin45—60minsportskillorfitnesslessonsthaninshorter(30min)orlonger(75—90min)gameormulti-activitylessons.Conclusions:Thehypothesizedcross-levelinteractionwasnotobservedinthedata.Caloricexpenditurecanbeoptimizedin45—60minsportskillorfitnessdevelopmentlessons.Itcanberecommendedthatschoolsadopt45—60minlessonlengthandprovideskillandfitnessdevelopmenttasksinphysicaleducationtomaximizecaloricexpenditure.

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