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

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 the dependent variable according to an increase of one standard deviation unit in the mean daytime physical activity.95% CI refers to 95 percent Confidence Interval.