The results of mixed model analyses showing the within-subject associations between sleep quantity and quality in the preceding night and physical activity during the following day.

All models are adjusted for sex, current BMI, age, socioeconomic status of the family, season, and history of any chronic disease.SD unit change refers to change in standard deviation unit according to an increase of one standard deviation unit in sleep quality or quantity.95% CI refers to 95 percent Confidence Interval.