摘要：Despite the well-known benefits of youths engaging in 60 or more minutes of daily physical activity, physical inactivity remains a significant public health concern. The 2008 Physical Activity Guidelines for Americans ( PAG ) provides recommendations on the amount of physical activity needed for overall health; the PAG Midcourse Report (2013) describes effective strategies to help youths meet these recommendations. Public health professionals can be dynamic change agents where youths live, learn, and play by changing environments and policies to empower youths to develop regular physical activity habits to maintain throughout life. We have summarized key findings from the PAG Midcourse Report and outlined actions that public health professionals can take to ensure that all youths regularly engage in health-enhancing physical activity. Regular physical activity has a myriad of health benefits for youths, many that are not related to body weight. In addition to increased cardiovascular and muscular fitness, strong evidence shows that physical activity can improve cardiovascular risk factors and metabolic health biomarkers, improve bone health, and contribute to favorable body composition. 1 Moderate evidence indicates that physical activity benefits mental health and academic achievement. 1–3
