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Have smartphones and ubiquitous internet access affected sedentary time among children and adolescents?

International Journal of Epidemiology Blog

In 2020, there were more than six billion smartphone users worldwide and almost global penetration. The public health consequences of this increase in sedentary time are uncertain. Sedentary time appears to be unrelated to metabolic health in youth, when moderate- to vigorous-intensity physical activity is taken into consideration.