The new study appears in the Journal of the American Medical Association.
“Kids should be active,” researcher Ulf Ekelund, PhD, says in an email. Ekelund is a group leader in the epidemiology unit of the Institute of Metabolic Science of Addenbrooke’s Hospital in Cambridge, U.K.
This includes moderate-intensity exercise such as brisk walking, outdoor play, dancing, cycling, aerobics, ball games, and other sports. "Parents should encourage these types of activities rather than [only] reducing sedentary time.” But the study did not distinguish whether sedentary time was spent in front of a TV as opposed to other non-active activities.