One out of 20 American children spends less than two hours in front of a screen, exercises, and sleeps well, according to The Lancet Child & Adolescent Health.
Limiting the time children spend in front of the computer to less than two hours, getting enough sleep, and exercising, help improve cognitive development, concludes a study of more than 4,500 American children, aged 8 to 11.
The research measured three main components three components: spending less than two hours in front of the computer as a recreational activity, sleeping between 9 to 11 hours, and doing physical activity. The outcome showed that 51% managed to get enough sleep, 18% did some physical activity, and only 37% spent the recommended amount of time in front of a screen; the average usage of a computer was 3.6 hours.
Of the 4,500 children, 29% did not meet any of the three components, while 41% met only one, 25%, two, and only 5%, all of them.
Individually analyzed, limiting time in front of a screen and adjusting sleeping schedules turned out to as the variables proved to be best associated with improving cognitive development, while exercising seems to be more linked to improving health.