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Fig. 2 | BMC Public Health

Fig. 2

From: Protocol for evaluating the impact of a national school policy on physical activity levels in Danish children and adolescents: the PHASAR study - a natural experiment

Fig. 2

Time points of physical activity data collections and description of study populations. Please notice that population sizes are merely estimates. SPACE: School site, Play Spot, Active transport, Club fitness and Environment . WCMC: When Cities Move Children. EYHS: European Youth Heart Study. CHAMPS: Childhood Health, Activity and Motor Performance School Study Denmark

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