ArticleInternational journal of obesity (2005)2020
Do differences in compositional time use explain ethnic variation in the prevalence of obesity in children? Analyses using 24-hour accelerometry.
Article in International journal of obesity (2005), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 3 of them syntheses that pooled it.
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Who cites it
11 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Characterizing device-measured sleep in observational health research using compositional data analysis: a systematic review.The international journal of behavioral nutrition and physical activity · 2026Pooled it
- Combinations of Physical Activity, Sedentary Behavior, and Sleep Duration and Their Associations With Physical, Psychological, and Educational Outcomes in Children and Adolescents: A Systematic Review.American journal of epidemiology · 2023Pooled it
- The whole day matters: Understanding 24-hour movement guideline adherence and relationships with health indicators across the lifespan.Journal of sport and health science · 2020Pooled it
- Methodological Choices on 24-h Movement Behavior Assessment by Accelerometry: A Scoping Review.Sports medicine - open · 2025Review
- Ethnic and residential differences in adherence to the 24-h movement guidelines and self-reported physical fitness among Zhuang and Han adolescents in southern China.Frontiers in public health · 2025Article
- A systematic review of research reporting practices in observational studies examining associations between 24-h movement behaviors and indicators of health using compositional data analysis.Journal of activity, sedentary and sleep behaviors · 2024Review
- The association between reallocations of time and health using compositional data analysis: a systematic scoping review with an interactive data exploration interface.The international journal of behavioral nutrition and physical activity · 2023Article
- Associations between 24-h movement behaviours and BMI in Chinese primary- and middle- school students.Journal of exercise science and fitness · 2023Article
- Reference values for wrist-worn accelerometer physical activity metrics in England children and adolescents.The international journal of behavioral nutrition and physical activity · 2023Article
- Sociodemographic differences in 24-hour time-use behaviours in New Zealand children.The international journal of behavioral nutrition and physical activity · 2022Article
- Standardised criteria for classifying the International Classification of Activities for Time-use Statistics (ICATUS) activity groups into sleep, sedentary behaviour, and physical activity.The international journal of behavioral nutrition and physical activity · 2019Article
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Authors and funding
7 authors.
Funding
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Abstract
BACKGROUND/
objectivesWhether variation in sleep and physical activity explain marked ethnic and socioeconomic disparities in childhood obesity is unclear. As time spent in one behaviour influences time spent in other behaviours across the 24-hour day, compositional analyses are essential. The aims of this study were to determine how ethnicity and socioeconomic status influence compositional time use in children, and whether differences in compositional time use explain variation in body mass index (BMI) z-score and obesity prevalence across ethnic groups.
methodsIn all, 690 children (58% European, 20% Māori, 13% Pacific, 9% Asian; 66% low-medium deprivation and 34% high deprivation) aged 6-10 years wore an ActiGraph accelerometer 24-hours a day for 5 days yielding data on sedentary time, sleep, light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA). Height and weight were measured using standard techniques and BMI z-scores calculated. Twenty-four hour movement data were transformed into isometric log-ratio co-ordinates for multivariable regression analysis and effect sizes were back-transformed.
resultsEuropean children spent more time asleep (predicted difference in minutes, 95% CI: 16.1, 7.4-24.9) and in MVPA (6.6 min, 2.4-10.4), and less time sedentary (-10.2 min, -19.8 to -0.6) and in LPA (-12.2 min, -21.0 to -3.5) than non-European children. Overall, 10% more sleep was associated with a larger difference in BMI z-score (adjusted difference, 95% CI: -0.13, -0.25 to -0.01) than 10% more MVPA (-0.06, -0.09 to -0.03). Compositional time use explained 35% of the increased risk of obesity in Pacific compared with European children after adjustment for age, sex, deprivation and diet, but only 9% in Māori and 24% in Asian children.
conclusionsEthnic differences in compositional time use explain a relatively small proportion of the ethnic differences in obesity prevalence that exist in children.
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