ArticleObesity science & practice2024
The Association Between Longitudinal Changes in Body Mass Index and Longitudinal Changes in Hours of Screen Time, and Hours of Physical Activity in German Children.
Article in Obesity science & practice, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Associations of Screen Time and Physical Activity With Body Mass Index in Early Adolescence: A Prospective Cohort Study.Obesity (Silver Spring, Md.) · 2026Article
- The Impact of Parental Behaviors on Children's Lifestyle, Dietary Habits, Screen Time, Sleep Patterns, Mental Health, and BMI: A Scoping Review.Children (Basel, Switzerland) · 2025Review
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
Introduction: The association of screen time and physical activity with body weight in children has been investigated in cross-sectional and prospective studies, as well as randomized controlled trials. The present study extends previous research by examining how longitudinal within-person changes in screen time and physical activity relate to changes in Body Mass Index (BMI) in children, and how changes in screen time and physical activity relate to each other. Methods: The data for the present study came from the PIER Youth Study. Data were collected from 971 children and their parents at two time points approximately 1 year apart. A multilevel modeling approach with measurement occasions nested within children was used to model changes in BMI across age. Results: Within a child, a change in daily hours of TV viewing was associated with a corresponding change in BMI, whereas a change in daily hours of physical activity was associated with an opposite change in BMI. Within-person correlations between changes in screen time and physical activity were small but positive. Conclusion: The present findings have important implications for interventions to reduce and prevent childhood overweight and obesity. Specifically, interventions should focus on both reducing daily TV viewing and promoting physical activity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.