ArticleBMJ open2021
Prospective changes in physical activity, sedentary time and sleep during the COVID-19 pandemic in a US-based cohort study.
Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- The Impact of "Home Office" Work on Physical Activity and Sedentary Behavior during the COVID-19 Pandemic: A Systematic Review.International journal of environmental research and public health · 2022Pooled it
- Changes in Diet, Physical Activity, Alcohol Consumption, and Tobacco Use in Adults During the COVID-19 Pandemic: A Systematic Review.Inquiry : a journal of medical care organization, provision and financingPooled it
- Exploring Physical Activity Among Mexican American Immigrants in New York City Before and During the COVID-19 Pandemic: A Two-Wave Panel, Mixed-Method Analysis.Journal of racial and ethnic health disparities · 2026Article
- The COVID rebound effect: Incidence of tendon rupture surgeries in the peripandemic COVID era in a single tertiary academic institution.Bulletin of the Hospital for Joint Disease (2013) · 2025Article
- Rebound incidence of anterior cruciate ligament reconstructions in the peripandemic coronavirus disease era: An audit of centers experience.Bulletin of the Hospital for Joint Disease (2013) · 2025Article
- Physical Activity and Psychological Symptoms in University Teachers Improved Post-COVID-19 Lockdown, but Sedentary Behavior Persisted.Healthcare (Basel, Switzerland) · 2025Article
- Mental Health in Young Adult University Students During COVID-19 Lockdown: Associations with Physical Activity, Sedentary Behaviors and Sleep Quality.International journal of environmental research and public health · 2025Article
- Article
- Prevalence and correlates of meeting 24-hour movement guidelines and its associations with physical fitness and depressive symptoms among adults: a provincial surveillance in China.BMC public health · 2024Article
- Changes in physical activity and sleep following the COVID-19 pandemic on a university campus: Perception versus reality.Sports medicine and health science · 2024Article
- Effects of COVID-19 Lockdown on Heart Failure Patients: A Quasi-Experimental Study.Journal of clinical medicine · 2023Article
- Changes in Teleworking and Physical Activity Behaviors in the United States Before and After Emergence of COVID-19.Journal of occupational and environmental medicine · 2023Article
- Increased incidence of acute achilles tendon ruptures in the peri-pandemic COVID era with parallels to the 2021-22 NFL season.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2023Article
- Toward an Integrated Consideration of 24 h Movement Guidelines and Nutritional Recommendations.Nutrients · 2023Review
- Change in Diet Quality and Meal Sources during the COVID-19 Pandemic in a Diverse Subset of Men and Women in the Cancer Prevention Study-3.Nutrients · 2023Article
- Personalized Disease Prevention (PDP): study protocol for a cluster-randomized clinical trial.Trials · 2022Article
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesAssess differences in movement behaviours within the 24-hour cycle, including light intensity physical activity (LPA), moderate-to-vigorous physical activity (MVPA), sedentary time and sleep, before and during the COVID-19 pandemic and assess these differences stratified by several relevant factors in a subcohort of the Cancer Prevention Study-3. DESIGN AND
settingUS-based longitudinal cohort study (2018-August 2020).
participantsN=1992 participants, of which 1304 (65.5%) are women, and 1512 (75.9%) are non-Latino white, with a mean age 57.0 (9.8) years. MEASURES: Age, sex, race/ethnicity, education; self-reported LPA, MVPA, sedentary time and sleep duration collected before and during the pandemic; pandemic-related changes in work, childcare and living arrangement; COVID-19 health history.
resultsCompared to 2018, participants spent an additional 104 min/day sedentary, 61 fewer min/day in LPA and 43 fewer min/day in MVPA during the pandemic. Time spent sleeping was similar at the two time points. Differences in movement behaviours were more pronounced among men, those with a higher level of education, and those who were more active before the pandemic.
conclusionsFrom 2018 to Summer 2020, during the COVID-19 pandemic, US adults have made significant shifts in daily time spent in LPA, MVPA and sedentary. There is an urgent need to promote more physical activity and less sedentary time during this public health crisis to avoid sustaining these patterns long-term.
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