New Delhi: One hour of moderate to vigorous exercise a day can help teens beat the effects of a common obesity-related gene with the nickname ``fatso,`` according to a new European study. The message for adolescents is to get moving, said lead author Jonatan Ruiz of the Karolinska Institute in Sweden.``Be active in your way,`` Ruiz said. ``Activities such as playing sports are just fine and enough.`` The study, released Monday, appears in the April edition of Archives of Pediatrics and Adolescent Medicine. The research supports US guidelines that tell children and teenagers to get an hour or more of physical activity daily, most of it aerobic activity such a running, jumping rope, swimming, dancing and bicycling. Scientists are finding evidence that both lifestyle and genes cause obesity and they`re just learning how much diet and exercise can offset the inherited risk. One gene involved with obesity, the FTO gene, packs on the pounds when it shows up in a variant form. Adults who carry two copies of the gene variant - about 1 in 6 people -weigh on average 7 pounds more than people who don`t.In the new study, 752 teenagers, who had their blood tested for the gene variant, wore monitoring devices for a week during waking hours to measure their physical activity.
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