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Women who exercise in pregnancy boost the brain development of their newborn babies, according to researchers who claim the effe
Women who exercise in pregnancy boost the brain development of their newborn babies, according to researchers who claim the effe
admin
2014-09-30
41
问题
Women who exercise in pregnancy boost the brain development of their newborn babies, according to researchers who claim the effect could benefit children for the rest of their lives. Babies’ brains showed more mature patterns of activity, linked to better in later life, when their mothers took at least three 20-minute sessions of moderate exercise a week. The early stage findings are the first from a randomized controlled trial in humans to show that a pregnant mother’s exercise routine could have such an impact on her baby’s brain.
"We know exercise is good for all kinds of things in pregnancy. It makes mothers feel better, gives them more control over their weight gain, and also has an impact on their child’s weight gain in life. We’re saying here’s an added bonus, that exercise gives your child a head-start in brain development," said Elise Labonte-LeMoyne at the University of Montreal.
Women joined her study in their first trimester and were randomly assigned to either an exercise or a sedentary(久坐的)control group. The 10 women in the exercise group cycled, walked, ran or swam for three short sessions a week, pushing themselves hard enough to get only slightly out of breath. The eight women in the sedentary group were told not to exercise.
In the 8 to 12 days after the babies were born, the researchers measured their brain activity. Using a cap covered with 124 electrodes, they recorded EEG(脑电图)while they played sleeping babies a series of beeps interspersed with different sounds. Even though the babies were asleep, patterns in their brain activity showed how efficiently they could discriminate between old and novel sounds. More developed brains find the task easier than less mature ones.
"The babies born from mothers who were physically active have a more mature cerebral activation, suggesting that their brains developed more rapidly." " This is important to look at this stage in their development, because the ability to discriminate sounds is the basis of learning to speak and to understand the sounds around you," said Labonte-LeMoyne, who described the study at the Society for Neuroscience meeting in San Diego.
A 2008 Danish study found that exercising had almost no effect on the size of a woman’s baby, but reduced the risk of the baby being small or large for its gestational age(胎龄). The National Health Service(NHS)advises pregnant women to avoid contact sports, and not exercise so hard that they cannot hold a conversation. Women who were not active before becoming pregnant should start with no more than 15 minutes of continuous exercise three times a week, and slowly build up to four half-hour sessions a week.
What is the best title for this passage?
选项
A、Babies Need More Exercise to Develop Their Brains
B、Benefits of Exercise for Women in Pregnancy
C、Exercise During Pregnancy Can Boost Your Baby’s Brain
D、The First Stage of Brain Development Is Vital in Pregnancy
答案
C
解析
综合推断题。全文中研究的内容都有重复出现的主题词exercise和brain,由第一段可知,孕期妇女的锻炼(exercise)能对胎儿大脑(brain)产生影响,而且这种影响促进新生儿的大脑发育,并且使孩子终生受益。综合起来可以推断,文章主题是:孕期妇女的适度锻炼有益于婴儿大脑的发育,故答案为C)。A)“婴儿需要更多锻炼以促进大脑发育”中施动者错误,全文内容是有关孕期母亲的锻炼而非婴儿自身锻炼,故排除;文章主要说明孕期妇女锻炼有利于胎儿大脑发育,并未详细说明孕期妇女锻炼的其他好处,因此B)不准确,故排除;D)“大脑发育的最初阶段在孕期至关重要”强调了胎儿的大脑发育而非母亲身体锻炼的重要性,偏离主题,故排除。
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大学英语六级
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