Ball games may boost bone health in school kids: study

Ball games and circuit strength training may lead to stronger bones, increased muscular strength and improved balance in school children, according to a major Danish study.

The study, published in the British Journal of Sports Medicine, examined bone and muscle health in 295 school children from Frederikssund and Copenhagen over a whole school year.

The children participated in the 'FIT FIRST' training concept, which looks into the effects of various types of intense interval training at school.

Researchers compared the effects on children who took the normal school physical education (PE) classes with children who had intense exercise on the timetable for two hours a week in the form of ball games on small pitches or 'circuit training' consisting of gymnastics and strength exercises using their own body weight.

"Our research shows that intense exercise at school has clear positive effects on bone density, muscular strength and balance in 8-10-year-old children," said Peter Krustrup, a professor at the University of Southern Denmark.

In the children in third grade who played ball games three against three or participated in circuit training for three x 40 minutes a week, muscular strength increased by 10 percent and balance improved by 15 percent.

The children's bone density increased by a whole 45 percent compared to the control group.

"These types of sports are great ways for children to "put bone in the bank," said Krustrup, the leader of the project.

"The study shows that bone density in the ball-game group rose by seven percent in the legs and by three percent in the body as a whole, giving a real boost to bone health," said Malte Nejst Larsen, assistant professor at the University of Southern Denmark.

"Exercise in school for children aged 8-10 which improves bone density, muscular strength and balance is the first big step towards preventing osteoporosis later in life," he said.