Soccer boosts bone development in boys, study says
Playing soccer can improve bone development in adolescent boys, new research shows.
In a study comparing adolescent soccer players to swimmers, cyclists and a control group of boys not involved in regular sport, scientists at the University of Exeter found soccer led to significantly better bones after one year of training.
Adolescence is the key period for bone development, and poor development at this stage is linked to reduced peak bone mass (the amount of bone mass at the end of the skeletal maturation, around age 30), increased fracture risk and osteoporosis later in life.
Though swimming and cycling have proven health benefits, the scientists said their study "raises a question" about whether they are good for bone development due to the non-weight bearing training - and they say young swimmers and cyclists could benefit from more weight-bearing exercise in training regimes.
"Our research shows that playing soccer can improve bone development in comparison to swimming and cycling," said first author Dimitris Vlachopoulos, of Sport and Health Sciences at the University of Exeter. "Though we focused on aspiring professionals who played as much as nine hours a week, playing soccer for three hours a week might be enough for a substantial effect. We already knew exercise was key for bone growth, but here we clarify what type of exercise. Although we didn't study other sports, it's reasonable to suppose that weight-bearing, high-impact, high-intensity exercise like tennis, badminton, basketball and handball will have similar effects to soccer."
The year-long study, of 116 boys aged 12-14, took a variety of measures including bone mineral content (BMC).
BMC measurements were taken at the lumbar spine (lower back) and femoral neck (upper leg) - both key sites for both fractures and osteoporosis.
The results showed soccer players had higher BMC than swimmers and cyclists after one year of sport-specific training.
For example, soccer players' BMC was 7% higher than that of cyclists at the lumbar spine, and 5% higher at the femoral neck.
The research was funded by the University of Exeter via a Marie-Sklodowska-Curie fellowship awarded to principal investigator Dr. Luis Gracia-Marco, also of the University of Exeter.
Gracia-Marco said: "Adolescence is the key time for bone growth. Once a person reaches puberty, the next five years are vitally important in this respect."
The athletes in the study were all playing high-level sport - the soccer players in Exeter City FC's youth setup, and the swimmers and cyclists at leading clubs in the South West.
The boys in the control group, though generally active, were not involved in regular sport.
Despite the many health benefits of cycling and swimming, the study found little difference in bone development between cyclists, swimmers and the control group.
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