New study: Teen years bring drastic drop in exercise time - Tucson Local Media: El Sol

New study: Teen years bring drastic drop in exercise time

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Posted: Tuesday, July 22, 2008 11:00 pm

One of the largest studies of its kind shows just how sluggish American children become once they hit the teen years: While 90 percent of 9-year-olds get a couple of hours of exercise most days, fewer than 3 percent of 15-year-olds do.

What’s more, the study suggests that fewer than a third of teens that age get even the minimum recommended by the government — an hour of moderate-to-vigorous exercise, like cycling, brisk walking, swimming or jogging.

The sharp drop raises concerns about inactivity continuing into adulthood, which could endanger kids’ health throughout their lives, the study authors said.

“People don’t recognize this as the crisis that it is,” said lead author Dr. Philip Nader, a pediatrician and professor emeritus at the University of California at San Diego.

The study, appearing in Wednesday’s Journal of the American Medical Association, tracked about 1,000 U.S. children at various ages, from 2000 until 2006.

Through age 12, well over half the children got at least the government-recommended amount of activity every day. By age 15, less than one-third were that active on weekdays, and only about 17 percent were on weekends.

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