尿布影响婴儿行走发育
<p><span word="It">It</span>'<span word="s">s</span> <span word="a">a</span> <span word="given">given</span> <span word="that">that</span> <span word="most">most</span> <span word="babies">babies</span> <span word="wear">wear</span> <span word="diapers">diapers</span>, <span word="in">in</span> <span word="western">western</span> <span word="cultures">cultures</span> <span word="anyway">anyway</span>. <span word="But">But</span> <span word="diapers">diapers</span> <span word="may">may</span> <span word="trap">trap</span> <span word="more">more</span> <span word="than">than</span> <span word="waste">waste</span>—<span word="they">they</span> <span word="may">may</span> <span word="also">also</span> <span word="confine">confine</span> <span word="a">a</span> <span word="baby">baby</span>'<span word="s">s</span> <span word="ability">ability</span> <span word="to">to</span> <span word="walk">walk</span>.</p><p>众所周知，大多数婴儿都会戴尿布，反正在西方文化里是这样。但是尿布可不仅仅只是锁住废水——它们还有可能限制婴儿的行走能力。</p><p><span word="Scientists">Scientists</span> <span word="compared">compared</span> <span word="the">the</span> <span word="walking">walking</span> <span word="gaits">gaits</span> <span word="of">of</span> 60 <span word="babies">babies</span> <span word="who">who</span> <span word="were">were</span> <span word="either">either</span> <span word="naked">naked</span>, <span word="wore">wore</span> <span word="a">a</span> <span word="thin">thin</span> <span word="disposable">disposable</span> <span word="diaper">diaper</span> <span word="or">or</span> <span word="a">a</span> <span word="thick">thick</span> <span word="cloth">cloth</span> <span word="diaper">diaper</span>. <span word="Half">Half</span> <span word="the">the</span> <span word="babies">babies</span> <span word="were">were</span> 13-<span word="month">month</span>-<span word="old">old</span> <span word="novice">novice</span> <span word="walkers">walkers</span> <span word="and">and</span> <span word="the">the</span> <span word="other">other</span> <span word="half">half</span> 19-<span word="month">month</span>-<span word="old">old</span> <span word="experienced">experienced</span> <span word="walkers">walkers</span>.</p><p>科学家们比较了60个婴儿走路的行走步态，这些婴儿要么不戴尿布，要么戴上了薄的尿不湿，要么戴上了厚的棉尿布。其中一半的婴儿只有13个月大，刚学着走路，另一半婴儿19个月大，已经会走路了。</p><p><span word="When">When</span> <span word="the">the</span> 30 13-<span word="month">month</span>-<span word="olds">olds</span> <span word="walked">walked</span> <span word="naked">naked</span> <span word="only">only</span> 10 <span word="fell">fell</span>, <span word="but">but</span> <span word="while">while</span> <span word="wearing">wearing</span> <span word="the">the</span> <span word="cloth">cloth</span> <span word="diaper">diaper</span> 21 <span word="of">of</span> <span word="them">them</span> <span word="fell">fell</span>, <span word="and">and</span> <span word="while">while</span> <span word="wearing">wearing</span> <span word="the">the</span> <span word="disposable">disposable</span> 17 <span word="of">of</span> <span word="them">them</span> <span word="fell">fell</span>. <span word="Among">Among</span> <span word="the">the</span> 19-<span word="month">month</span>-<span word="olds">olds</span> <span word="only">only</span> <span word="four">four</span> <span word="fell">fell</span> <span word="while">while</span> <span word="naked">naked</span> <span word="or">or</span> <span word="wearing">wearing</span> <span word="disposables">disposables</span>, <span word="while">while</span> <span word="eight">eight</span> <span word="fell">fell</span> <span word="when">when</span> <span word="wearing">wearing</span> <span word="cloth">cloth</span> <span word="diapers">diapers</span>. <span word="But">But</span> <span word="both">both</span> <span word="age">age</span> <span word="groups">groups</span> <span word="took">took</span> <span word="wider">wider</span> <span word="and">and</span> <span word="shorter">shorter</span> <span word="steps">steps</span> <span word="while">while</span> <span word="wearing">wearing</span> <span word="diapers">diapers</span> <span word="as">as</span> <span word="opposed">opposed</span> <span word="to">to</span> <span word="walking">walking</span> <span word="naked">naked</span>. <span word="The">The</span> <span word="research">research</span> <span word="is">is</span> <span word="in">in</span> <span word="the">the</span> <span word="journal">journal</span> <span word="Developmental">Developmental</span> <span word="Science">Science</span>.</p><p>不戴尿布时，30个13个月大的婴儿中只有10个摔倒，但当他们戴上棉尿布时，有21人摔倒。在19个月大的婴儿中，不戴尿布或者戴上尿不湿时只有4人摔倒，但当戴上棉尿布时有8人摔倒。然而与不戴尿布截然相反的是，这两个年龄段的婴儿在戴上尿布时步子会迈得更宽更短一些。这项研究将发表在《发育科学》期刊上。</p>
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