Physical inactivity has been identified as a leading risk factor for global mortality and a contributor to the rise in overweight and obesity. Early childhood is a period of rapid physical and cognitive development and a time during which a child’s habits are formed and family lifestyle habits are open to changes and adaptations. To meet daily physical activity time recommendations, particularly in children, the pattern of overall activity
across a 24-hour period needs to be considered, since the day is made up of sleep time, sedentary time and light, moderate- or vigorous-intensity physical activity.

链接地址：https://apps.who.int/iris/handle/10665/311664