疫情期间戴着口罩做运动？那可能很危险！
<p><span word="The">The</span> <span word="coronavirus">coronavirus</span> <span word="began">began</span> <span word="to">to</span> <span word="affect">affect</span> <span word="sporting">sporting</span> <span word="events">events</span> <span word="as">as</span> <span word="early">early</span> <span word="as">as</span> <span word="January">January</span> 30, <span word="when">when</span> <span word="the">the</span> <span word="Chinese">Chinese</span> <span word="Football">Football</span> <span word="Association">Association</span> <span word="announced">announced</span> <span word="it">it</span> <span word="was">was</span> <span word="delaying">delaying</span> <span word="the">the</span> <span word="start">start</span> <span word="of">of</span> <span word="the">the</span> <span word="football">football</span> <span word="season">season</span>. <span word="Two">Two</span> <span word="months">months</span> <span word="later">later</span> <span word="it">it</span> <span word="was">was</span> <span word="revealed">revealed</span> <span word="that">that</span> <span word="the">the</span> <span word="Tokyo">Tokyo</span> <span word="Olympic">Olympic</span> <span word="Games">Games</span> <span word="would">would</span> <span word="be">be</span> <span word="postponed">postponed</span> <span word="until">until</span> <span word="the">the</span> <span word="summer">summer</span> <span word="of">of</span> 2021 – <span word="the">the</span> <span word="first">first</span> <span word="postponement">postponement</span> <span word="in">in</span> <span word="modern">modern</span> <span word="Olympic">Olympic</span> <span word="history">history</span>.</p><p>从1月30日开始，疫情就对体育赛事造成了影响，当时中国足球协会宣布推迟足球赛季的起始时间。两个月后东京奥运会也宣布推迟到2021年夏季召开，这是现代奥运史上第一次延期。</p><p><span word="Sporting">Sporting</span> <span word="administrators">administrators</span> <span word="are">are</span> <span word="only">only</span> <span word="now">now</span> <span word="exploring">exploring</span> <span word="ways">ways</span> <span word="to">to</span> <span word="enable">enable</span> <span word="a">a</span> <span word="return">return</span> <span word="to">to</span> <span word="training">training</span> <span word="and">and</span> <span word="competition">competition</span> <span word="at">at</span> <span word="both">both</span> <span word="professional">professional</span> <span word="and">and</span> <span word="amateur">amateur</span> <span word="levels">levels</span>. <span word="In">In</span> <span word="the">the</span> <span word="absence">absence</span> <span word="of">of</span> <span word="a">a</span> <span word="vaccine">vaccine</span>, <span word="though">though</span>, <span word="there">there</span> <span word="are">are</span> <span word="several">several</span> <span word="challenges">challenges</span>. <span word="One">One</span> <span word="of">of</span> <span word="them">them</span> <span word="is">is</span> <span word="around">around</span> <span word="breathing">breathing</span>.</p><p>体育管理者现在试图鼓励专业和业余运动员恢复训练和竞赛。但由于缺乏疫苗，恢复体育运动还存在一些困难，其中就包括呼吸问题。</p><p><span word="When">When</span> <span word="playing">playing</span> <span word="sport">sport</span>, <span word="breathing">breathing</span> <span word="is">is</span> <span word="faster">faster</span> <span word="and">and</span> <span word="harder">harder</span> <span word="than">than</span> <span word="at">at</span> <span word="rest">rest</span>, <span word="which">which</span> <span word="increases">increases</span> <span word="the">the</span> <span word="risk">risk</span> <span word="of">of</span> <span word="passing">passing</span> <span word="the">the</span> <span word="disease">disease</span> <span word="on">on</span>. <span word="As">As</span> <span word="a">a</span> <span word="result">result</span>, <span word="premier">premier</span> <span word="league">league</span> <span word="football">football</span> <span word="is">is</span> <span word="considering">considering</span> <span word="introducing">introducing</span> <span word="face">face</span> <span word="masks">masks</span>. <span word="Others">Others</span> <span word="may">may</span> <span word="follow">follow</span> <span word="suit">suit</span>.</p><p>做运动时的呼吸比休息时更快更用力，会增加疾病传播的风险。因此英超足球正考虑引进口罩，其他人可能也会效仿。</p><p><span word="Yet">Yet</span> <span word="a">a</span> <span word="mask">mask</span> <span word="makes">makes</span> <span word="it">it</span> <span word="harder">harder</span> <span word="to">to</span> <span word="inhale">inhale</span> <span word="the">the</span> <span word="quantity">quantity</span> <span word="of">of</span> <span word="air">air</span> <span word="needed">needed</span> <span word="to">to</span> <span word="perform">perform</span> <span word="at">at</span> <span word="the">the</span> <span word="highest">highest</span> <span word="levels">levels</span>. <span word="We">We</span> <span word="know">know</span> <span word="that">that</span> <span word="wearing">wearing</span> <span word="a">a</span> <span word="surgical">surgical</span> <span word="mask">mask</span> <span word="can">can</span> <span word="increase">increase</span> <span word="the">the</span> <span word="resistance">resistance</span> <span word="to">to</span> <span word="airflow">airflow</span>. <span word="Exercise">Exercise</span> <span word="invariably">invariably</span> <span word="leads">leads</span> <span word="to">to</span> <span word="faster">faster</span> <span word="and">and</span> <span word="harder">harder</span> <span word="breaths">breaths</span>, <span word="so">so</span> <span word="wearing">wearing</span> <span word="a">a</span> <span word="mask">mask</span> <span word="during">during</span> <span word="exercise">exercise</span> <span word="places">places</span> <span word="a">a</span> <span word="further">further</span> <span word="strain">strain</span> <span word="on">on</span> <span word="airflow">airflow</span>.</p>
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