(Reuters) ? Children who get more exercise also tend to do better in school, whether the exercise comes as recess, physical education classes or getting exercise on the way to school, according to an international study.
The findings, published in the Archives of Pediatrics & Adolescent Medicine, come as U.S. schools in general cut physical activity time in favor of more academic test preparation.
Amika Singh, who worked on the study, said the findings meant that schools should prioritize both academics and exercise and that families could have the same attitude at home.
"Maybe it's an activity break, stand up every half an hour in class and do something," said Singh, from VU University Medical Center in Amsterdam.
"It might mean going to school by bike ... Any kind of physical activity you can think of. It doesn't mean only the physical education standard class."
Singh and her colleagues reviewed 14 studies that compared kids' physical activity with their grades or scores on math, language and general thinking and memory tests.
Those included two types of reports, such as 10 so-called "observational studies" in which researchers asked parents, teachers or students themselves how active they were, then followed them for a few months to a few years to track their academic performance.
In the four other studies, one group of kids was given extra time for physical education classes and other health and fitness exercises, and their test scores were later compared against a group of kids who didn't get extra exercise.
When researchers asked students how much time they spent exercising, they found that those with higher rates of physical activity did better in the classroom.
Three of the four studies involving an exercise intervention found that students given more exercise time scored higher on measures of academic performance.
In one report from the United States, second and third graders who got an extra 90 minutes of physical activity per week did better on a test of spelling, reading and math, along with gaining less weight over the next three years.
That may be because children are better behaved and can concentrate better when they get enough exercise, or because physical activity improves blood flow to the brain and boosts mood, the researchers wrote.
"There's obviously the long-term links between physical activity and health," said Sandy Slater, who has studied recess and physical education at the University of Illinois at Chicago but wasn't involved in the latest study.
"But this is another reason to try to continue to keep some dedicated amount of time for physical education or recess or some other types of physical activity in the school day."
Recent research has suggested that many U.S. children are not getting the recommended amount of physical education and recess endorsed by the American Heart Association, which includes two and a half hours of physical education a week and 20 minutes of recess every day.
SOURCE: http://bit.ly/rMXkHY
(Reporting from New York by Genevra Pittman at Reuters Health; Editing by Elaine Lies and Yoko Nishikawa)
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