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The Effectiveness of Let´s Move Campaign

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Overweight and obesity, an excessive accumulation of body fat, is one of the major public health challenge in the 21st century, affecting one in every six people worldwide (World Health Organization, 2013a). According to the World Health Organization (WHO) estimation, globally over 42 million children under the age of five were overweight in 2010 (WHO, 2011). A recent study estimated that the worldwide prevalence of overweight and obesity among preschool children aged 2-5 years increased from 4.2% to 6.7% within two decades and is expected to reach 12.7% by 2020 (de Onis et al., 2010). The results of National Health and Nutrition Examination Survey indicated that in the United State (US) obesity among pre-school children increased from 5% to 10.4% between 1976-1980 and 2007-2008 respectively. In addition, about 17% (or 12.5 million) of children and adolescents aged 2-19 years were obese in the US in 2007-2008 (Pan et al., 2012). A recent study by Grow et al. (2010) found that obesity was mostly prevalent among poor or minority groups with low socioeconomic status residing in disadvantaged areas in the US.

Childhood obesity has both the immediate and the long-term health effects, for instance, a greater risk for bone and joint problems, sleep apnea, asthma, and emotional and psychological problems such as bullying by peers, low self-esteem, anxiety, and depression (Saha et al., 2011, Black et al., 2013, Barton, 2012, Daniels et al., 2005). Moreover, children with overweight

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