ArticleBMC public health2017
School grade and sex differences in domain-specific sedentary behaviors among Japanese elementary school children: a cross-sectional study.
Article in BMC public health, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Characteristics of sagittal spinal alignment in Japanese elementary school students in standing position: focusing on thoracic hyperkyphosis.Anthropological science : journal of the Anthropological Society of Nippon = Jinruigaku zasshi · 2025Article
- Differences in physical fitness levels by adherence to the 24-hour movement guidelines among Japanese elementary school children.PloS one · 2025Article
- Sleep Time, Physical Activity, and Screen Time among Montana American Indian Youth.International journal of environmental research and public health · 2023Article
- Children's Internet use and physical and psychosocial development.Frontiers in public health · 2023Article
- The relationships between parents' and children's screen times on body mass index: a cross-sectional path analysis.BMC public health · 2022Article
- Screen time duration and timing: effects on obesity, physical activity, dry eyes, and learning ability in elementary school children.BMC public health · 2021Article
- Joint Associations of Leisure Screen Time and Physical Activity with Academic Performance in a Sample of Japanese Children.International journal of environmental research and public health · 2020Article
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5 authors.
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Abstract
backgroundIt is vital to reduce the proportion of sedentary behavior in children. Understanding the duration and behavioral context is needed. 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.
methodsA total of 625 children (330 boys) were surveyed in 2010 and 2014. 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. 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).
resultsOn 625 children, mean minutes (SD) of sedentary behavior per week in (1) - (6) were 90.3 (123.4), 535.0 (356.6), 167.3 (222.1), 23.9 (70.9), 264.9 (185.3), and 33.4 (61.2) in weekdays and 42.1 (70.0), 323.9 (232.0), 123.0 (96.4), 15.8 (49.9), 74.4 (96.4), and 71.3 (84.9) in weekends, respectively. There were differences in the minutes of sedentary behavior between participants of 2010 and 2014; e.g., TV game use and homework in weekdays and weekdays and car travel in weekends. Boys spent more time in TV game use, and girls spent more time reading, listening to music, doing homework, and car travel. Higher-grade students spent more time reading or listening to music, using a computer, and doing homework. Higher-grade students were 2.09 times (95% CI: 1.32 - 3.30) in whole week, 2.08 times (95% CI: 1.45 - 3.00) in weekday, and 1.88 times (95% CI: 1.29 - 2.74) in weekend more likely to spend ≥2 h per day in domains (2) - (4) (screen-time) than lower-grade students.
conclusionsTime spent engaging in each domain-specific sedentary behavior differed according to sex and school grade. Higher-grade students were less likely to meet screen-time guidelines. These findings highlight the need for domain-focused strategies to decrease sedentary behavior in Japanese school-age children.
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