通过周末睡懒觉来补眠不可行

　　Staying in bed on the weekend might not be enough to make up for a weeks' worth of sleep deprivation, a new study suggests.

　　据趣味科学网站8月3日报道，仅仅想通过周末睡个大懒觉来补足周内所缺睡眠是不够的，最新一项研究表明。

　　In the study, after five days with only four hours of sleep, a 10-hour doze did remedy some of the ill effects of chronic sleep restriction. However, even after an extended snooze, participants still experienced lapses of attention and delayed reaction times.

　　研究显示，连续五天只睡4小时，然后一次性睡够10小时，之前长期缺觉带来的负面影响确实可以得到缓解。然而，即便如此，受试者变得无法集中注意力，且反应时间延长。

资料图:一次性补足所缺睡眠不可行

　　The study involved 159 healthy adults with an average age of 30, which is the largest number of subjects to be involved in a single laboratory-based experiment on sleep restriction.

　　该研究的受试对象为159个平均年龄为30岁的健康成年人，他们构成了基于实验室研究睡眠控制的最大数目受试群体。

　　The participants were only allowed to sleep from 4 am to 8 am for five consecutive nights. Then they were assigned to recovery sleep ranging from zero to 10 hours in bed for one night. Beginning at 8 am each day, participants completed 30-minute tasks designed to assess so-called neurobehavioral functions including alertness, reaction times and other indicators of mental impairment.

　　在该研究中，受试者连续5天只能从凌晨4点睡到早8点，然后他们会获得一晚从零点到10点的“恢复觉”。每早8点开始，受试者需完成一个30分钟的测试任务，用来评估他们所谓的“神经行为学”功能。这些功能包括灵敏度、反应时间以及其他脑功能状况指标。

　　It suggests complete recovery from sustained sleep restriction may require even more sleep during one night or multiple nights of extended sleep, the researchers say.

　　研究人员称该研究表明，持久的睡眠不足需要一晚更多的睡眠时间或是几晚较长时间的睡眠才可得到充分补偿。