ArticleBMC public health2015
Longitudinal changes in objectively measured physical activity differ for weekdays and weekends among Chinese children in Hong Kong.
Article in BMC public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
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Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Factors of physical activity among Chinese children and adolescents: a systematic review.The international journal of behavioral nutrition and physical activity · 2017Pooled it
- Randomized Controlled Trial Outcomes for HomeStyles-2, an Online Obesity Prevention Program for Families with Children in Middle Childhood.Nutrients · 2026Trial
- Effect and process evaluation of a kindergarten-based, family-involved cluster randomised controlled trial in six European countries on four- to six-year-old children's steps per day: the ToyBox-study.The international journal of behavioral nutrition and physical activity · 2017Trial
- Comparisons of hip-worn and ankle-worn accelerometers on measuring physical activity and their correlations with perceived activity level in community-dwelling older adults.Gait & posture · 2026Article
- Examining relationships between U.S. children's physical activity levels during recess, school days, and weekend days.Preventive medicine reports · 2025Article
- Effectiveness and feasibility of family and peer challenge intervention with wearable technology on physical activity among middle schoolers in Utah: A pilot trial.Preventive medicine reports · 2025Article
- Race, Ethnicity, and Geography as Determinants of Excessive Weight and Low Physical Activity in Pediatric Population: Protocol for Systematic Review and Meta-Analysis.Healthcare (Basel, Switzerland) · 2024Article
- Results from the Hong Kong's 2022 report card on physical activity for children and adolescents.Journal of exercise science and fitness · 2023Article
- Differences in physical activity between weekdays and weekend days among U.S. children and adults: Cross-sectional analysis of NHANES 2011-2014 data.Preventive medicine reports · 2022Article
- Weekday and Weekend Physical Activity of Preschool Children in Relation to Selected Socioeconomic Indicators.International journal of environmental research and public health · 2022Article
- Movement guidelines for young children: Engaging stakeholders to design dissemination strategies in the Hong Kong early childhood education context.Frontiers in public health · 2022Article
- Joint associations between weekday and weekend physical activity or sedentary time and childhood obesity.International journal of obesity (2005) · 2019Article
- Results from the Hong Kong's 2018 report card on physical activity for children and youth.Journal of exercise science and fitness · 2019Article
- Understanding differences between summer vs. school obesogenic behaviors of children: the structured days hypothesis.The international journal of behavioral nutrition and physical activity · 2017Article
- Age, period and cohort effects and the predictors of physical activity and sedentary behaviour among Chinese children, from 2004 to 2011.BMC public health · 2017Observational
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3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundCross-sectional investigation showed that Chinese children in Hong Kong were more physically active on weekends than weekdays, which is contrary to previous findings. However, little is known as to whether these time-segment-specific differences persist with age. This study aimed to compare the 2-year changes in accelerometer-assessed physical activity (PA) and sedentary time (ST) between weekdays and weekends among Chinese children in Hong Kong.
methodsChildren aged 6-8 years were recruited from primary schools in Hong Kong. Time spent in ST (<100 counts per minute [cpm]), moderate-to-vigorous PA (MVPA), and light-intensity PA (LPA) were measured by accelerometer at baseline and then at 1-year and 2-year follow-ups. Mean annual changes were determined using mixed-effects linear models for children who provided 3-day valid data (including 1 weekend day) for at least two time points (n = 412). Magnitude of changes between weekdays and weekends was compared using age × time-segment interactions.
resultsAt each assessment wave, the percentage of time spent in MVPA (% MVPA) and LPA (% LPA) was consistently high, whereas the percentage of time spent in ST (% ST) was lower on weekends than weekdays. A decrease in % MVPA was found for both weekdays (mean annual change: boys, -0.7, 95% CI = -0.9 to -0.1; girls, -0.8, 95% CI = -1.0 to -0.6) and weekends (boys, -1.2, 95% CI = -1.5 to -0.9; girls, -1.4, 95% CI = -1.6 to -1.1). An increase was found in % ST for both weekdays (boys, 1.3, 95% CI = 0.7 to 1.9; girls, 2.4, 95% CI = 1.9 to 3.3) and weekends (boys, 1.8, 95% CI = 1.1 to 2.5; girls, 2.6, 95% CI = 1.9 to 3.3). Mean annual change in MVPA time (min) was greater on weekends than weekdays (difference: boys, 3.0, 95% CI = 0.3 to 5.7; girls, 3.5, 95% CI = 1.1 to 5.8).
conclusionsAge-related decline in MVPA was more marked on weekends than weekdays. Interventions to hinder age-related changes in PA and ST should target both time segments, but weekends warrant particular attention for interventions targeting PA maintenance due to the greater declines.
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