未参与这项研究的匹兹堡儿童医院青少年医学部负责人伊丽莎白·米勒(Elizabeth Miller)博士指出,该研究并非随机对照试验——按照随机对照试验的设计要求,应是将改变了作息时间的学校与未进行此类改变的同类学校进行比较。但她承认该方法较实用,其研究结果大有前途。
“Even schools with limited resources can make this one policy change with what appears to be benefits for their students,” Dr. Miller said.
“即使学校的资源有限,也不妨碍他们实施这一有益于学生的政策改革,”米勒博士说。
Researchers have found that during adolescence, as hormones surge and the brain develops, teenagers who regularly sleep eight to nine hours a night learn better and are less likely to be tardy, get in fights or sustain athletic injuries. Sleeping well can also help moderate their tendency toward impulsive or risky decision-making.
研究人员发现,在青春期,青少年体内激素激增,大脑发育,他们在每夜日常睡眠达八到九个小时时学习效果较好,也较不容易迟到、打架或经常发生运动伤害。良好的睡眠也可以帮助减少他们冒失冲动或做出冒险决定。
During puberty, teenagers have a later release of the “sleep” hormone melatonin, which means they tend not to feel drowsy until around 11 p.m. That inclination can be further delayed by the stimulating blue light from electronic devices, which tricks the brain into sensing wakeful daylight, slowing the release of melatonin and the onset of sleep. The Minnesota study noted that 88 percent of the students kept a cellphone in their bedroom.
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