Adolescent physical education and physical activity in California.

In California, more than 1.3 million adolescents (38%) do not participate in physical education (PE) at school, and this rate increases dramatically with age, from just 5% at age 12 to 77% at age 17. In addition, only 19% of teens meet current physical activity recommendations. Participation in PE at school is associated with more overall physical activity. Policies that promote more opportunities for physical activity, including those that help schools meet or exceed current PE requirements, can contribute to greater levels of physical activity for adolescents.