13 years have boys in grades five decreased their physical activity by one quarter. The smartphones are believed to be the cause, it shows a study at Gothenburg University and Linnaeus University.
– This is concern the same result, says Associate Professor Anders Raustorp.
He also points out that previous studies have shown that children who are not deemed to be sufficiently active at that age retains the pattern into adulthood.
Researchers have investigated the physical activity during school time and leisure, including a pedometer. Between 40 and 100 children in grades two and five in the five schools have been measured on three occasions.
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