Coaches and parents have been warned of the dangers of over-training kids, as a new report highlights the increased risk of injury during adolescence.

The teenage growth spurt is associated with a rapid increase in bone length, which may compromise bone strength, leading to increased risk of fractures.

As the bones lengthen faster than muscles, the subsequent muscle tension can lead increasing pulling at bony growth plates. This can lead to pain and inflammation, often associated with physical activity.