Observational studyBMC public health2021
Bidirectional associations between sedentary time and sleep duration among 12- to 14-year-old adolescents.
Observational study in BMC public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04327414 (The Effect of Standing Desks in Secondary Schools on Sedentary Behavior and Cognitive Performance in Flemish Adolescents), which is not on this map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Effect of Standing Desks in Secondary Schools on Sedentary Behavior and Cognitive Performance in Flemish Adolescents
Who cites it
6 citing papers in PubMed.
- Effects of physically active lessons and active breaks on cognitive performance and health indicators in elementary school children: a cluster randomized trial.The international journal of behavioral nutrition and physical activity · 2025Trial
- Associations of daily sedentary time with mental health and sleep quality in adolescents: analyses of interaction and moderation effects.BMC psychology · 2026Article
- Associations between physical activity and sedentary time with sleep duration and sleep quality in adolescents.BMC public health · 2026Article
- Teleworking as the main risk factor for sedentary behavior: the COVISTRESS international study.PloS one · 2026Observational
- The synergistic effects of diet and physical activity on sleep quality among Chinese adolescents: A comprehensive cross-sectional study.Global mental health (Cambridge, England) · 2026Article
- Independent and Combined Associations between Physical Activity and Sedentary Time with Sleep Quality among Chinese College Students.International journal of environmental research and public health · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe aim of this study was to investigate bidirectional associations between (prolonged) sitting time and sleep duration in 12- to 14-year-old adolescents using a between-subjects and within-subjects analyses approach.
methodsObservational data were used from 108 adolescents (53% girls; mean age 12.9 (SD 0.7) years) from six schools in Flanders, Belgium. The Axivity AX3 triaxial accelerometer, worn on the thigh, was used to assess daily total sitting time and daily time spent in sedentary bouts of ≥30 min (as a proxy for prolonged sitting time). The Fitbit Charge 3 was used to assess nightly sleep duration. Both monitors were worn on schooldays only (ranging from 4 to 5 days). Linear mixed models were conducted to analyse the associations, resulting in four models. In each model, the independent variable (sleep duration, sitting time or prolonged sitting time) was included as within- as well as between-subjects factor.
resultsWithin-subjects analyses showed that when the adolescents sat more and when the adolescents spent more time sitting in bouts of ≥30 min than they usually did on a given day, they slept less during the following night (p = 0.01 and p = 0.05 (borderline significant), respectively). These associations were not significant in the other direction. Between-subjects analyses showed that adolescents who slept more on average, spent less time sitting (p = 0.006) and less time sitting in bouts of ≥30 min (p = 0.004) compared with adolescents who slept less on average. Conversely, adolescents who spent more time sitting on average and adolescents who spent more time sitting in bouts of ≥30 min on average, slept less (p = 0.02 and p = 0.003, respectively).
conclusionsBased on the between-subjects analyses, interventions focusing on reducing or regularly breaking up sitting time could improve adolescents' sleep duration on a population level, and vice versa. However, the within-subjects association was only found in one direction and suggests that to sleep sufficiently during the night, adolescents might limit and regularly break up their sitting time the preceding day.
trial registrationData have been used from our trial registered at ClinicalTrials.gov ( NCT04327414 ; registered on March 11, 2020).
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