Children's Exercise Sessions Often Too Short to Prevent Obesity
Too few children and teens engage in exercise sessions that last long enough to reduce their risk of obesity, say Canadian researchers.
They analyzed data on 2,498 young people, ages 8 to 17, who took part in the U.S. National Health and Nutrition Examination Survey. Motion sensors were used to measure the participants' levels of physical activity. The results showed that two-thirds of their physical activity involved short, sporadic sessions that lasted less than five minutes, United Press International reported.
"Even in 60-minute physical education classes or team practices, children are inactive for a large portion of the time, and this would not necessarily count as sustained exercise," study author Ian Janssen, of Queen's University, said in a news release. "When children engage in longer periods of sustained physical activity, there is a smaller likelihood that they will be overweight or obese."
The study is in the May issue of the American Journal of Preventive Medicine.
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