简介:Background:Althoughevidenceonthehealtheffectsofsedentarybehavior(SB)hasgrownsystematicallyinrecentyears,fewdevelopingcountrieshavereportedpopulationlevelsofSB,especiallyinSouthAmerica.OurobjectivewastodescribetimespentsittinginarepresentativesamplefromChilecategorizedbyage,gender,educationallevel,andbodymassindex(BMI).Methods:AnationalhealthsurveywasconductedinChileinanationallyrepresentativesample(n=5411)in2009-2010.Sittingtime(ST)wasmeasuredwiththeGlobalPhysicalActivityQuestionnaireVersion2.Results:Datawerefrom5031participants(43.26±0.41years,mean±SE;40.3%male).Overall,therewerenogenderdifferencesinmeanST(men:158.10±5.80min/day,women143.45±4.77min/day;p=0.05).STwaslowerinthosewholivedinruralareascomparedwithurbanareas(99.4min/dayvs.160.0min/day;p=0.001).STincreasedsignificantlywithincreasingBMI,butonlyinmen(p=0.009),andwaspositivelyrelatedtoyearsofeducationinbothmenandwomen(p<0.0001).Conclusion:Thefindingsweredifferentfromthosereportedinothercountriesandcontexts,reinforcingtheneedforinternationalsurveillanceandmonitoringovertimetoinformpolicymakers.DifferencesinSTacrossdifferentgroupsemphasizetheneedtodeveloptailoredmessagesandinterventionsforreducingSTindifferentpopulationsubgroups.
简介:早起拉开窗帘举目望去,一夜之间,外面已成了银装素裹的世界。今年冬天雪下得少,似乎缺了一点气氛。这场雪的到来,提示着人们,年已经不远了,是啊,又要过年了,甚至能看到被大雪压弯的树枝也在抖动着春的喜悦。
简介:①如今,年的声音,最大保留下来的是鞭炮。随着都市雾霾天气的日益加重,人们呼吁过年减少燃放甚至禁止鞭炮,鞭炮之声,越发岌岌可危,以至最后消失,也不是不可能的事情。②其实,年的声音丰富得多,不止于鞭炮。只是岁月的流逝,时代的变迁,让年的声音无可奈何地消失了很多,以至于我们遗忘了它们而不知不觉,甚至觉得理所当然或势在必然。③有这样两种年声的消失,最让我遗憾。