Physical activity, sedentary behaviour and sleep: movement behaviours in early life

In 2016, at least 41 million children younger than 5 years worldwide were estimated to be overweight or obese, and this number is likely to increase to at least 50 million by 2030. Although the prevalence of overweight or obesity among children younger than 5 years has plateaued in some developed countries, rates have increased among children in low-income and middle-income countries in the past 15 years. Obesity at a young age is likely to continue in adolescence and adulthood, resulting in various health and social consequences.