Fig. 2

Average daily counts per minute in children across countries based on different articles. When data were reported separately for boys and girls [30, 38], the mean was reported. Ekelund et al. [47] reported on pooled data from different studies and cleaned and processed the data together. In the Figure the original study is mentioned in the legend: ENERGY = European energy balance research to prevent excessive weight gain among youth; EYHS = European Youth Heart Study; ICAD = International Children’s Accelerometry Database; CSCIS = Copenhagen School Child Intervention Study; ALSPAC = Avon Longitudinal Study of Parents and Children; PEACH = Personal and Environmental Associations with Children’s Health; SPEEDY = Sport, Physical activity and Eating behaviour, Environmental Determinants in Young People; MAGIC = Movement and Activity Glasgow Intervention in Children; KISS = Kindersportstudie; Verloigne et al. [30] reported counts per 15 s, to harmonize results, this was multiplied by four to obtain counts per minute