HINTS:

十以上數(shù)字、年份、百分率、金額等都用阿拉伯?dāng)?shù)字表示，數(shù)字采用千位逗號隔斷


In general the fatter subjects slept about 1.8 hours a week less than those with normal weights. "Americans experience insufficient sleep and corpulent bodies. Clinicians are aware of the burden of obesity on patients," the study said. "Our findings suggest that major extensions of sleep time may not be necessary, as an extra 20 minutes of sleep per night seems to be associated with a lower body mass index," it added. "We caution that this study does not establish a cause-and-effect relationship between restricted sleep and obesity, but investigations demonstrating success in weight loss via extensions of sleep would help greatly to establish such a relationship."
總的來說，體態(tài)肥胖的受試者每周比正常體重的受試者少睡約1.8小時。 該研究指出：“美國人普遍睡眠不足﹑體型超標(biāo)。醫(yī)生們已經(jīng)認(rèn)識到肥胖給病人帶來的負(fù)擔(dān)?！?同時該研究還顯示：“我們的調(diào)查結(jié)果表明沒有必要大量增加睡眠時間，每晚多睡20分鐘似乎有助于降低體重指數(shù)。” “我們要提醒大家的是這項研究的結(jié)果并不足以證明節(jié)制睡眠和肥胖之間的因果關(guān)系，（然而）調(diào)查顯示延長睡眠時間確實可以成功減輕體重，這對于證明這一因果關(guān)系非常有幫助。”