Children Participating in the FIT FIRST Study at Frederikssund School, Denmark (image) University of Southern Denmark Faculty of Health Sciences Share Print E-Mail Caption Eight to ten-year-old schoolchildren develop stronger bones, increased muscular strength and improved balance when ball games or circuit training are on the timetable. This is shown by a major Danish study from researchers at the University of Southern Denmark and University of Copenhagen. Top right: Professor and project leader Peter Krustrup of University of Southern Denmark. Credit F-MARC Usage Restrictions With credit to F-MARC Share Print E-Mail 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.