Characteristics of the participants (N = 275).

<p>Characteristics of the participants (N = 275).</p

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.

<p>All models are adjusted for sex, current BMI, age, socioeconomic status of the family, season, and history of any chronic disease.</p><p>*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.</p><p>95% CI refers to 95 percent Confidence Interval.</p

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.

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

The associations between the physical activity in the preceding day and sleep duration in the following night in girls and boys.

<p>The associations between the physical activity in the preceding day and sleep duration in the following night in girls and boys.</p