There were differences in the minutes of sedentary behavior between participants of 20 e.g., TV game use and homework in weekdays and weekdays and car travel in weekends. Two-way analysis of covariance and logistic regression analyses, adjusted for BMI and moderate to vigorous physical activity, were used to examine school-grade and sex differences in sedentary behaviors and the independent risk of exceeding recommended total daily screen time (< 2 h). Using a questionnaire, data regarding participants’ grade (first through third grades: lower grades fourth through six grades: higher grades), sex, weight, and height were collected in addition to the time spent per day engaging in each specific sedentary behavior separately: (1) reading or listening to music, (2) TV or video viewing, (3) TV game use, (4) internet use excluding class, (5) homework, and (6) car travel. MethodsĪ total of 625 children (330 boys) were surveyed in 20. The present study examined school-grade and sex differences in domain-specific sedentary times and concurrence with screen-time guidelines among Japanese elementary school children. Understanding the duration and behavioral context is needed. It is vital to reduce the proportion of sedentary behavior in children.
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