Interaction between parent BMI and limit setting of sedentary behaviors on adolescent zBMI. Low, medium, and high levels of parent BMI and limit setting of sedentary behaviors were computed using the mean as the medium value, one standard deviation above the mean as the high value, and one standard deviation below the mean as the low value. Adolescent zBMI, standardized to account for age and sex differences, is presented above to allow for more meaningful interpretation of the interaction.