Resumen de Active Transportation Surveillance--United States, 1999-2012.

• The article discusses several aspects of the U.S. Centers for Disease Control and Prevention's Active Transportation Surveillance--United States, 1999-2012 report which compares the prevalence of six different active transportation (AT) measurements from five national surveillance systems in America. Physical fitness activities such as walking or bicycling to work are examined, along with U.S. public health, habitual AT, and single-day activity measures.