ArticleBMJ open2020
Association between objectively measured physical activity and longitudinal changes in body composition in adolescents: the Tromsø study fit futures cohort.
Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 2 of them syntheses that pooled it.
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Who cites it
5 citing papers in PubMed, 2 syntheses or guidelines pooled it, 7 citations in OpenAlex.
- A Systematic Review and Meta-Analysis of Longitudinal Studies Exploring the Link Between Physical Inactivity and Indicators of Childhood Overweight/Obesity and Metabolically Unhealthy Obesity Risk in Western Countries.Current obesity reports · 2026Pooled it
- Association Between Physical Activity and Indicators of Overweight/Obesity and Metabolically Unhealthy Obesity Risk in Children and Adolescents: A Systematic Review of Prospective Epidemiological Studies and Randomized Controlled Trials in Western Countries.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026Pooled it
- Composite variable bias: causal analysis of weight outcomes.International journal of obesity (2005) · 2025Article
- A study on the effects of health behavior and sports participation on female college students' body mass index and healthy promoting lifestyle.Frontiers in public health · 2022Article
- Obesity, Lifestyle Behaviors, and Dietary Habits of Saudi Adolescents Living in Riyadh (ATLS-2 Project): Revisited after a Ten-Year Period.Life (Basel, Switzerland) · 2021Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesPhysical activity may be important in deterring the obesity epidemic. This study aimed to determine whether objectively measured physical activity in first year of upper secondary high school predicted changes in body composition over 2 years of follow-up in a cohort of Norwegian adolescents (n=431).
designA longitudinal study of adolescents (mean age of 16 (SD 0.4) at baseline, 60.3% girls) participating in the Fit Futures studies 1 (2010-2011) and 2 (2012-2013).
settingAll eight upper secondary high schools in two municipalities in Northern Norway.
participantsStudents participating in both studies and under the age of 18 at baseline and with valid measurement of physical activity at baseline and body composition in both surveys. PRIMARY AND SECONDARY OUTCOMES: Change in objectively measured body mass index and waist circumference and change in dual-energy X-ray absorptiometry measured fat mass index, lean mass index (LMI) and appendicular LMI (aLMI) between baseline and follow-up.
resultsAt baseline, boys had significantly higher physical activity volume (p=0.01) and spent on average of 6.4 (95% CI 2.1 to 10.6) more minutes in moderate-to-vigorous physical activity (MVPA) than girls (p<0.01). In girls, multivariate regression analyses showed that more sedentary time was negatively associated with changes in LMI (p<0.01) and aLMI (p<0.05), whereas more light activity had opposite effects on these measures (p<0.01 and p<0.05, respectively). No significant associations between measures of baseline physical activity and changes in body composition parameters were observed in boys.
conclusionsIn this cohort of Norwegian adolescents, sedentary and light physical activity was associated with changes in LMI and aLMI in girls, but not boys. Minutes spent in MVPA in first year of upper secondary high school was not associated with changes in measures of body composition in neither sex after 2 years.
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