研究：久坐不利健康 集中运动也无益
<p>美国的研究人员表示，久坐会导致循环不畅及各类疼痛，同时增加患心脏病和糖尿病的几率。研究人员指出，人在坐着的时候消耗的能量较少，换句话说就是，久坐会长肉！数据显示，久坐桌前的人每天大概燃烧300卡的热量，而工作需要大量体力支出的人每天能燃烧2300卡热量。发表于2017年11月的一份研究报告指出，久坐的人比时常行走运动的人患糖尿病的风险高112%，患心血管疾病的风险高147%，死于心血管疾病的风险高90%，死于其他疾病的风险高49%。而2017年10月的一项研究也指出，坐着看电视一小时，寿命便缩短22分钟；而抽一支烟则使寿命缩短11分钟。由此可见，久坐的危害与吸烟不相上下。</p><p>那么每天早晨做100个仰卧起坐能减少久坐的危害吗？科学家表示，集中运动并不能消除久坐的危害，长久之计是每隔20分钟就走动一会儿，要让运动有持续性才真正对身体有帮助。所以呢，条件允许的话，在办公室给自己备一个脚踏板吧，时不时站起来走几步也是不错的。</p><p>"<span word="Prolonged">Prolonged</span> <span word="sitting">sitting</span> <span word="is">is</span> <span word="not">not</span> <span word="what">what</span> <span word="nature">nature</span> <span word="intended">intended</span> <span word="for">for</span> <span word="us">us</span>," <span word="says">says</span> <span word="Dr">Dr</span>. <span word="Camelia">Camelia</span> <span word="Davtyan">Davtyan</span>, <span word="clinical">clinical</span> <span word="professor">professor</span> <span word="of">of</span> <span word="medicine">medicine</span> <span word="and">and</span> <span word="director">director</span> <span word="of">of</span> <span word="women">women</span>'<span word="s">s</span> <span word="health">health</span> <span word="at">at</span> <span word="the">the</span> <span word="UCLA">UCLA</span> <span word="Comprehensive">Comprehensive</span> <span word="Health">Health</span> <span word="Program">Program</span>.</p><p>"<span word="The">The</span> <span word="chair">chair</span> <span word="is">is</span> <span word="out">out</span> <span word="to">to</span> <span word="kill">kill</span> <span word="us">us</span>," <span word="says">says</span> <span word="James">James</span> <span word="Levine">Levine</span>, <span word="an">an</span> <span word="endocrinologist">endocrinologist</span> <span word="at">at</span> <span word="the">the</span> <span word="Mayo">Mayo</span> <span word="Graduate">Graduate</span> <span word="School">School</span> <span word="of">of</span> <span word="Medicine">Medicine</span>.</p>
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