Active kids stay slim

Getting physical keeps the pounds at bay

Adolescents who participate in physical education at school are more likely to maintain a normal weight as young adults, according to a study by researchers at the Johns Hopkins Bloomberg School of Public Health. For each weekday of physical education at school the odds of being an overweight adult decreased by 5%. Participation in all five days of physical education decreased the odds of being an overweight adult by 28%. The study is published in the January 2008 edition of the journal Archives of Pediatrics & Adolescent Medicine.

“These findings underscore the important role that school-based and extracurricular physical activities play in reducing the likelihood of becoming an overweight adult,” says Professor Robert Blum, MD, the study’s senior author. “While physical education wasn’t a good weight-loss mechanism over time, it appears to have a positive impact in helping teenagers maintain a healthy weight into young adulthood,” he adds.

The Hopkins team studied 3,345 teens in grades eight through 12 and found that increased participation in physical education and certain extracurricular physical activities decreased the likelihood of being overweight as an adult. The likelihood of being an overweight adult was most reduced among teens who participated in wheel-related extracurricular activities, such as rollerblading, biking or skate-boarding more than four times per week. These teens were more than twice as likely to maintain a normal weight as adults compared to their less active peers. However, no impact was detected when physical activities were performed fewer than three times per week.

The American Academy of Pediatrics and the US Department of Health and Human Services recommend physical education at all grade levels but studies show that less than half of high school students are enrolled in physical education courses. Only 6% of junior high schools and 5% of senior high schools offer daily physical education, according to the Institute of Medicine.

“Around 16% of adolescents in the United States are overweight or obese and 85% of obese teens will become obese adults. School-based physical education could be a low-cost strategy and a long-lasting solution to adult obesity,” says Blum.

 

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