Home Health Parents News Now Kids Less Fit Than Their Parents Were, Study Finds Kids Less Fit Than Their Parents Were, Study Finds By Holly Lebowitz Rossi November 19, 2013 Advertisement Save Pin FB More Tweet Email Send Text Message Print shutterstock_138987200 30644 On average, it takes children 90 seconds longer to run a mile than their counterparts did 30 years ago. Heart-related fitness has declined 5 percent per decade since 1975 for children ages 9 to 17. The American Heart Association, whose conference featured the research on Tuesday, says it's the first to show that children's fitness has declined worldwide over the last three decades. ''It makes sense. We have kids that are less active than before,'' said Dr. Stephen Daniels, a University of Colorado pediatrician and spokesman for the heart association. Health experts recommend that children 6 and older get 60 minutes of moderately vigorous activity accumulated over a day. Only one-third of American kids do now. ''Kids aren't getting enough opportunities to build up that activity over the course of the day,'' Daniels said. ''Many schools, for economic reasons, don't have any physical education at all. Some rely on recess'' to provide exercise. Sam Kass, a White House chef and head of first lady Michelle Obama's Let's Move program, stressed the role of schools in a speech to the conference on Monday. ''We are currently facing the most sedentary generation of children in our history,'' Kass said. The new study was led by Grant Tomkinson, an exercise physiologist at the University of South Australia. Researchers analyzed 50 studies on running fitness — a key measure of cardiovascular health and endurance — involving 25 million children ages 9 to 17 in 28 countries from 1964 to 2010. Keep up with the latest parenting news with our Parents Daily Newsletter Image: Running feet, via Shutterstock By Holly Lebowitz Rossi Save Pin FB More Tweet Email Send Text Message Print Comments Add a Comment Be the first to comment! No comments yet. Advertisement Close this dialog window Add a comment Kids Less Fit Than Their Parents Were, Study Finds Add your comment... Cancel Submit Success! Thanks for adding your feedback.