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Compositional time use (% of 24-h day) at different ages. Data presented as compositional means - the geometric mean that has been re-normalised to 24 h (1440 min) for all component geometric means. Data presented as minutes (% of 1440 min) after normalisation to 24 h for each participant. Night-time sleep and naps have been combined. LPA is light physical activity, MVPA is moderate-to-vigorous physical activity, WASO is wake after sleep onset
