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Scatterplots of a relationship between physical activity and water intake during a school day. (A) Non-linear positive association for step counts over the 24-h period and water amount (n = 228)/percentage of individual estimated water intake in the morning (n = 204) (B). Non-linear positive association for step counts throught the morning and water amount (n = 244). No association for step counts throught the morning and percentage of individual estimated water intake (n = 218).
