[答案]A
B
Compared to adults, children seem to be moving constantly. So it's no surprise that most parents who are quizzed about their child's physical activity level describe their children as fairly active. But a new study of nearly 2000 British school children suggests that many parents overestimate the amount of physical activity their children are really getting.
The researchers equipped 1892 British school children, ages 9 and 10, with accelerometers that measure all physical
activity
during
a
given
time
period.
The research,known as the Speedy study collected the exercise data from children at
92
schools
in
Norfolk,England, between April and July 2007.
A child was regarded inactive if he or she recorded less than an hour a day of physical activity. Although the majority of children studied were getting enough physical activity, a_sizable_minority_of_children_were_not. Overall,39 percent of girls and 18 percent of boys studied were getting less than an hour of physical activity each day.
But if you asked the parents of the inactive children to describe their child's activity level,the vast majority—80 percent—described their children as fairly or very physically active, according to the findings published in the American Journal of Preventive Medicine. Interestingly, the children themselves had more awareness about their lack of physical activity. Overall, 40 percent of children overestimated their physical activity.
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2017-04-24
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