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Item Epidemiological Transition in Physical Activity and Sedentary Time in Children(Human Kinetics, 2019) Onywera, Vincent O; Barreira, Tiago V.; Broyles, Stephanie T.; Tudor-Locke, Catrine; Chaput, Jean-Philippe; Standage, MartynTo determine if children’s moderate to vigorous physical activity (MVPA) and sedentary time varied across levels of household income in countries at different levels of Human Development Index (HDI), consistent with the theory of epidemiological transition. Methods: Data from 6548 children (55% girls) aged 9–11 years from 12 countries at different HDI levels are used in this analysis to assess MVPA and sedentary time (measured using ActiGraph accelerometers) across levels of household income. Least-square means are estimated separately for boys and girls at the estimated 10th, 50th, and 90th percentiles of HDI for the sample. Results: For boys, time in MVPA is negatively associated with income at the 10th and 50th percentiles of HDI (both P < .002). For girls, time in MVPA is negatively associated with income at the 10th and 50th percentiles of HDI (all P < .01) and positively related with income at the 90th percentile (P = .04). Sedentary time is positively associated with income at the 10th percentile of HDI for boys (P = .03), but not for girls. Conclusions: Results support the possibility of an epidemiological transition in physical activity, with lower levels of MVPA observed at opposite levels of income depending on the HDI percentile. This phenomenon was not observed for sedentary timeItem Physical Education Classes, Physical Activity, and Sedentary Behavior in Children(Pub Med, 2018) Onywera, Vincent O; Silva, Diego Augusto Santos; Chaput, Jean-Philippe; Katzmarzyk, Peter T; Fogelholm, Mikael; Sarmiento, Olga LThis study aimed to examine the associations between participation frequency in physical education (PE) classes and objective measures of physical activity (PA) and sedentary behavior (SB) in children from 12 countries at different levels of development.Item Outdoor time and dietary patterns in children around the world(Pub Med, 2018) Onywera, Vincent O; Chaput, Jean-Philippe; Tremblay, Mark S; Sarmiento, Olga L; Tudor-Locke, Catrine; G LeBlanc, AllanaWhether outdoor time is linked to dietary patterns of children has yet to be empirically tested. The objective of this study was to examine the association between outdoor time and dietary patterns of children from 12 countries around the world.Item Thresholds of physical activity associated with obesity by level of sedentary behavior in children: Physical activity, sedentary behavior, and obesity(Research Gate, 2018) Onywera, Vincent O; Tremblay, Mark S; Chaput, Jean-Philippe; Olds, Tims; Lambert, Estelle Victoria; Barnes, Joel DIt is unknown whether moderate-to-vigorous physical activity (MVPA) thresholds for obesity should be adapted depending on level of sedentary behavior in children.