The impact of screen time on cardiovascular disease, cancer incidence and mortality may be greatest in people who have lower levels of grip-strength, fitness and physical activity, according to a study published in the open access journal, BMC Medicine.
Researchers at Glasgow University, UK, found that the amount of leisure time spent watching a television or computer screen had almost double the impact on the risk of mortality, cardiovascular disease and cancer in people with low grip strength or low fitness levels than on participants who had the highest levels of fitness and grip strength. Increasing strength and fitness may offset the adverse health consequences of spending a large proportion of leisure time sitting down and watching a screen, according to the authors.
Dr Carlos Celis, corresponding author of the study said: "Our study shows that the risks associated with sedentary behaviour are not the same for everyone; individuals with low physical activity experience the greatest adverse effects. "This has potential implications for public health guidance as it suggests that specifically targeting people with low fitness and strength for interventions to reduce the time they spend sitting down may be an effective approach."
The authors suggest that measuring grip strength could be an efficient way to target individuals that may benefit most from public health interventions to reduce screen time.
Dr Celis explained: "While fitness testing can be difficult in healthcare and community settings, grip strength is a quick, simple and cheap measure, therefore it would be easy to implement as a screening tool in a variety of settings."
The study analysed data from 391,089 participants from the UK Biobank, a large, prospective, population-based study that includes data on all-cause mortality, cardiovascular disease and cancer incidence, along with screen time, grip strength, fitness and physical activity.
The researchers caution that the use of self-reported screen time and physical activity data may have impacted on the strength of the associations drawn in this study. The observational nature of the study does not allow for conclusions about cause and effect.
Communications Officer, BMC
For interviews contact Elizabeth McMeekin or Ali Howard in the University of Glasgow Communications and Public Affairs Office on 0141 330 4831 or 0141 330 6557; or email Elizabeth.firstname.lastname@example.org or email@example.com
Notes to editor:
1. Research article:
Associations of discretionary screen time with mortality, cardiovascular disease and cancer are attenuated by strength, fitness and physical activity: findings from the UK Biobank study
Celis et al. BMC Medicine 2018
When the embargo lifts the article will be available at: https:/
Please name the journal in any story you write. If you are writing for the web, please link to the article. All articles are available free of charge, according to BMC's open access policy.
2. BMC Medicine is the flagship medical journal of the BMC series. An open access, open peer-reviewed general medical journal, BMC Medicine publishes outstanding and influential research in all areas of clinical practice, translational medicine, medical and health advances, public health, global health, policy, and general topics of interest to the biomedical and sociomedical professional communities. We also publish stimulating debates and reviews as well as unique forum articles and concise tutorials.
3. A pioneer of open access publishing, BMC has an evolving portfolio of high quality peer-reviewed journals including broad interest titles such as BMC Biology and BMC Medicine, specialist journals such as Malaria Journal and Microbiome, and the BMC series. At BMC, research is always in progress. We are committed to continual innovation to better support the needs of our communities, ensuring the integrity of the research we publish, and championing the benefits of open research. BMC is part of Springer Nature, giving us greater opportunities to help authors connect and advance discoveries across the world.