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Many new mothers suffer from extreme tiredness even four months after giving birth, prompting experts to warn they should not hu
Many new mothers suffer from extreme tiredness even four months after giving birth, prompting experts to warn they should not hu
admin
2015-07-05
1.6K+
问题
Many new mothers suffer from extreme tiredness even four months after giving birth, prompting experts to warn they should not hurry back to work. An Australian study found half of new mothers were still "excessively sleepy" 18 weeks into motherhood. The findings have "significant implications" for decisions-makers about the length of parental leave, the researchers said.
Dr. Ashleigh Filtness, of Queensland University of Technology, studied the sleep patterns and tiredness in women after giving birth. She found that despite new mothers recording stable night sleep times at 18 weeks, they continued to report being excessively tired. The study, published in the journal PLOS ONE, followed 33 healthy new Australian mums who recorded their sleep patterns after giving birth in 15-minute intervals during weeks six, 12 and 18.
Dr. Filtness said, " Sleep disruption strongly influences daytime function, with sleepiness recognized as a risk-factor for people performing critical and dangerous tasks. Our findings bring into question whether four months’ parental leave is sufficient to ensure daytime sleepiness has diminished to a manageable level before returning to work. "
And while new mothers were still waking on average twice a night to attend to their babies at six, 12 and 18 weeks—their total sleep time was about seven hours and 20 minutes. Australian new mothers actually slept more than the average American ones, who got six hours and 53 minutes.
Dr. Filtness added, "While post-partum (产后的) women experienced disturbed sleep, they didn’t necessarily experience total reduced sleep time. What we found was that inevitably, new mothers will wake in the night to attend to their infants and the number of times they wake remains consistent during the first 18 post-partum weeks. Sleep disruption reduced over time and it appears this was driven by a reduction in the time it took for new mums to return to sleep, suggesting improved efficiency by mothers at settling their infants or the development of the infants’ circadian rhythm (生理节奏). " She added the findings highlighted the importance of sleep quality as opposed to sleep quantity—especially during the first 12 weeks.
Referring back to the length of parental leave a woman has, Dr. Filtness said, " It is important when developing regulations for parental leave entitlements that policy makers take into account the high prevalence of excessive daytime sleepiness experienced by new mothers. With the birth of every baby the new mother must adjust to the demands of parenting and one aspect of that is to remain functional while experiencing potentially severe sleep disruption. To put this into context, the assessment tool used to determine new mums’ sleepiness is also used by GPs to determine clinically relevant levels of sleepiness. If any other otherwise healthy person presented to a doctor with this degree of sleepiness they would likely have been offered advice regarding implications for daytime impairment including the impact on sustaining attention and decision making. "
It is inferred from the passage that compared with Australian new mothers, those from America______.
选项
A、woke up less to care for their babies
B、slept about a half hour less in total
C、woke up much earlier in the morning
D、had better sleep quality during the night
答案
B
解析
事实细节题。定位句指出,澳大利亚新妈妈的总睡眠时间大约为7小时20分钟。澳大利亚新妈妈实际上比美国新妈妈的平均睡眠时间长,美国新妈妈的睡眠时间是6小时53分钟。由此可以推知,美国新妈妈的总睡眠时间比澳大利亚新妈妈少27分钟,也就是少大约半个小时,故答案为B)。A)“醒来照顾婴儿的次数要少”,第四段第一句只提到澳大利亚新妈妈平均每晚醒来两次照顾她们的婴儿,并未提及美国新妈妈夜间醒来的次数,因此无法比较两个国家新妈妈夜间醒来的次数,故排除;C)“早上醒得更早”,原文并未提及,故排除;D)“夜间睡眠质量更好”,该段第二句只提到澳大利亚新妈妈实际上比美国新妈妈的平均睡眠时间长,但并未比较她们的睡眠质量,故排除。
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0
大学英语六级
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