Can ethnic differences in children’s body composition be explained by differences in eating, physical activity, sedentary or sleeping?

In earlier research published in the journal Pediatric Obesity, we have found that -across Europe and in other affluent countries- children from non-native ethnicity are in general more likely to be overweight or obese, and to have unhealthy eating , physical activity and sleeping patterns than 'native' children. In further analyses just published in the journal PLOS One, with Juan Miguel Fernández-Alvira as first author, we explored if differences in eating, physical activity, sedentary and/or sleeping behaviors according to ethnic background can explain the ethnic differences in overweight and obesity. We conducted mediation analyses on the data of the ENERGY cross sectional study, a cross-European study among 10-12 year old schoolchildren and their parents across eight countries in Europe. For this study we used only data from the countries where ethnic differences in overweight and obesity were most prominent: Greece and the Netherlands. In these two country the ethnic differences were, however, in the opposite direction. As we published before in PLOS One, in Greece -the country with the highest prevalence of childhood overweight and obesity-, children from ethnic minorities are less likely to be overweight or obese than native Greek children. In the Netherlands -a country with relatively low prevalence of overweight and obesity-, ethnic minority children are more likely to be overweight or obese than native Dutch children. In the now published paper in the same journal, we show ethnic differences in children’s body composition were partially mediated by differences in breakfast skipping in the Netherlands and sugared drinks intake, sports participation and sleep duration in Greece.