The study, in the October issue of Sleep, raises questions, said the lead author, Lauren D. Asarnow, a graduate student at the University of California, Berkeley.
该研究发表在《睡眠》杂志的十月刊上。其主要作者,加州大学伯克利分校的研究生劳伦·D·奥萨诺表示,该研究提出了一些有待解决的问题。
"First, what is driving this relationship?" she said. "Is it metabolic changes that happen when you stay up late? And second, if we change sleep patterns, can we change eating behavior and the course of weight change?"
"首先,这种关联背后的推动力是什么?是因为当你熬夜时,新陈代谢发生了改变?"她说。"第二,如果改变了睡眠习惯,那我们是否可以改变饮食行为和体重变化的过程?"
The scientists acknowledge that their study had limitations. Their sleep data depended on self-reports, and they did not have complete diet information. Also, they had no data on waist circumference, which, unlike B.M.I., can help distinguish between lean muscle and abdominal fat.
科学家们承认他们的研究存在一定的局限性。他们的睡眠数据依赖于自我报告,也没能获得完整的饮食信息。此外,他们没有参与者的腰围数据。而腰围数据较之B.M.I.有一个优点就是它有助于区分肌肉和腹部脂肪。
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