PNAS:睡前电子阅读影响睡眠质量

2014-12-24 佚名 新华网

晚上睡前阅读一会儿电子书会不会有助睡眠?美国《国家科学院学报》22日发布的研究报告发现,如果阅读的是iPad等会发光的电子设备,那么反而会伤害睡眠质量甚至健康。 为研究电子阅读器等设备对睡眠的影响,美国宾夕法尼亚州立大学和布莱根妇女医院等机构的研究人员招募了12名志愿者。在为期14天的时间里,这些人分别在睡前看iPad和印刷书各连续5个晚上,每晚在较暗光线下阅读4小时。 研究表明,与阅读印

晚上睡前阅读一会儿电子书会不会有助睡眠?美国《国家科学院学报》22日发布的研究报告发现,如果阅读的是iPad等会发光的电子设备,那么反而会伤害睡眠质量甚至健康。

为研究电子阅读器等设备对睡眠的影响,美国宾夕法尼亚州立大学和布莱根妇女医院等机构的研究人员招募了12名志愿者。在为期14天的时间里,这些人分别在睡前看iPad和印刷书各连续5个晚上,每晚在较暗光线下阅读4小时。

研究表明,与阅读印刷书相比,阅读iPad的人要多用约10分钟的时间才能入睡,他们快速动眼睡眠时间(即多梦的睡眠阶段)也要少得多。进一步分析发现,他们分泌的促进睡眠的褪黑激素减少,受褪黑激素影响的生理节律则推迟了一个多小时。

更让研究人员惊讶的是,同样是8小时睡眠,阅读iPad的人在第二天早上会感到更困倦,警觉性也相对较低,从而可能对白天的工作产生不利影响。

研究还表明,像iPad这类能发出富含短波蓝光光线的其他电子设备也会影响睡眠。但使用电子墨水屏幕的电子设备由于不发光,则不太容易对睡眠和生理节律产生负面影响。

研究人员指出,现代人总体生活在一个睡眠有限的社会里,而发光设备对人体的健康影响可能比此前认为的更持久。

原始出处:

Anne-Marie Chang, Daniel Aeschbach, Jeanne F. Duffy, and Charles A. Czeisler. Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness. PNAS, December 22, 2014;

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    2015-01-15 drwjr
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    2015-04-21 hbwang006

    我就有此习惯,看来要改了

    0

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