U.S. Children Are Less Fit Than Others Around the World
"If all the kids in the world were to line up for a race, the average American child would finish at the back of the pack," says Grant Tomkinson, an associate professor of kinesiology in the UND College of Education & Human Development and senior author of the study. "Canada, on the other hand, fared moderately well, placing just above middle of the pack. This study is the largest of its kind so it's exciting to have this evidence at hand."
"Kids who are aerobically fit tend to be healthy, and kids who are healthy are apt to be healthy adults. So studying aerobic fitness in the early years is very insightful to overall population health," says Justin Lang, the report's lead author. He's at CHEO and a PhD student at the University of Ottawa in Canada. "It's important to know how kids in Canada or America fare on the world stage, for example, because we can always learn from other countries with fitter kids."
The study involved analyzing 20-meter shuttle data, also called the beep test, from 1.1 million kids aged 9 to 17 years old from 50 countries. The beep test is the most popular field based test of aerobic fitness levels of children and youth. It is also standardized and commonly used around the world.
Another key finding of this study is that income inequality — the gap between rich and poor as measured by the Gini Index — is strongly correlated with aerobic fitness. Children and youth from countries with a small gap between rich and poor appear to have better fitness.
Study collaborators include coauthors from University of Montreal and University of South Australia.