Activity Graphs (IMAGE) University of California - San Diego Caption Graphs showing percent of dance class time spent in moderate-to-vigorous physical activity for children and adolescents. Percentages based on averages. Credit UC San Diego School of Medicine Usage Restrictions Caption and credit must be used as indicated. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.