讨厌腰中赘肉? 做家务能练出纤纤细腰
<p><span word="One">One</span> <span word="reason">reason</span> <span word="so">so</span> <span word="many">many</span> <span word="American">American</span> <span word="women">women</span> <span word="are">are</span> <span word="overweight">overweight</span> <span word="may">may</span> <span word="be">be</span> <span word="that">that</span> <span word="we">we</span> <span word="are">are</span> <span word="vacuuming">vacuuming</span> <span word="and">and</span> <span word="doing">doing</span> <span word="laundry">laundry</span> <span word="less">less</span> <span word="often">often</span>, <span word="according">according</span> <span word="to">to</span> <span word="a">a</span> <span word="new">new</span> <span word="study">study</span> <span word="that">that</span>, <span word="while">while</span> <span word="scrupulously">scrupulously</span> <span word="even">even</span>-<span word="handed">handed</span>, <span word="is">is</span> <span word="likely">likely</span> <span word="to">to</span> <span word="stir">stir</span> <span word="controversy">controversy</span> <span word="and">and</span> <span word="emotions">emotions</span>.</p><p>一项新的研究显示，美国有如此之多的超重女性，原因之一是她们不再那么经常使用吸尘器和洗衣服。即使以谨慎而公正的方式进行，这项研究也可能在舆论和情感层面引起轩然大波。</p><p><span word="The">The</span> <span word="study">study</span>, <span word="published">published</span> <span word="this">this</span> <span word="month">month</span> <span word="in">in</span> <span word="PLoS">PLoS</span> <span word="One">One</span>, <span word="is">is</span> <span word="a">a</span> <span word="follow">follow</span>-<span word="up">up</span> <span word="to">to</span> <span word="an">an</span> <span word="influential">influential</span> 2011 <span word="report">report</span> <span word="which">which</span> <span word="used">used</span> <span word="data">data</span> <span word="from">from</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>. <span word="Bureau">Bureau</span> <span word="of">of</span> <span word="Labor">Labor</span> <span word="Statistics">Statistics</span> <span word="to">to</span> <span word="determine">determine</span> <span word="that">that</span>, <span word="during">during</span> <span word="the">the</span> <span word="past">past</span> 50 <span word="years">years</span>, <span word="most">most</span> <span word="American">American</span> <span word="workers">workers</span> <span word="began">began</span> <span word="sitting">sitting</span> <span word="down">down</span> <span word="on">on</span> <span word="the">the</span> <span word="job">job</span>. <span word="Physical">Physical</span> <span word="activity">activity</span> <span word="at">at</span> <span word="work">work</span>, <span word="such">such</span> <span word="as">as</span> <span word="walking">walking</span> <span word="or">or</span> <span word="lifting">lifting</span>, <span word="almost">almost</span> <span word="vanished">vanished</span>, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="data">data</span>, <span word="with">with</span> <span word="workers">workers</span> <span word="now">now</span> <span word="spending">spending</span> <span word="most">most</span> <span word="of">of</span> <span word="their">their</span> <span word="time">time</span> <span word="seated">seated</span> <span word="before">before</span> <span word="a">a</span> <span word="computer">computer</span> <span word="or">or</span> <span word="talking">talking</span> <span word="on">on</span> <span word="the">the</span> <span word="phone">phone</span>. <span word="Consequently">Consequently</span>, <span word="the">the</span> <span word="authors">authors</span> <span word="found">found</span>, <span word="the">the</span> <span word="average">average</span> <span word="American">American</span> <span word="worker">worker</span> <span word="was">was</span> <span word="burning">burning</span> <span word="almost">almost</span> 150 <span word="fewer">fewer</span> <span word="calories">calories</span> <span word="daily">daily</span> <span word="at">at</span> <span word="work">work</span> <span word="than">than</span> <span word="his">his</span> <span word="or">or</span> <span word="her">her</span> <span word="employed">employed</span> <span word="parents">parents</span> <span word="had">had</span>, <span word="a">a</span> <span word="change">change</span> <span word="that">that</span> <span word="had">had</span> <span word="materially">materially</span> <span word="contributed">contributed</span> <span word="to">to</span> <span word="the">the</span> <span word="rise">rise</span> <span word="in">in</span> <span word="obesity">obesity</span> <span word="during">during</span> <span word="the">the</span> <span word="same">same</span> <span word="time">time</span> <span word="frame">frame</span>, <span word="especially">especially</span> <span word="among">among</span> <span word="men">men</span>, <span word="the">the</span> <span word="authors">authors</span> <span word="concluded">concluded</span>.</p><p>上述研究成果是2011年发表的一篇论文的续作，刊登在本月的科研杂志《<span word="PLoS">PLoS</span> <span word="One">One</span>》上。前作引起了很大反响，它通过美国劳工统计局(<span word="Bureau">Bureau</span> <span word="of">of</span> <span word="Labor">Labor</span> <span word="Statistics">Statistics</span>)的数据得出结论说，50年来，大多数美国劳动者逐渐开始坐着工作。像四处走动或搬运东西这样的体力劳动几乎已经消失。这些数据显示，现在劳动者把大多数时间都用在了操作电脑和打电话上。该论文的作者发现，和他们的父辈相比，美国劳动者每天在工作中消耗的热量减少了150大卡。作者断定，这样的变化对同一时期肥胖现象的增多有实质性的推动作用，特别是男性肥胖。</p>
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