Approximately 45.9% to 54% of all sports injuries are a result of overuse. The frequency and type of overuse injuries in elite young athletes varies by sport and by age. A study of 453 elite young athletes, aged 8-16 years, reviewed the prevalence of overuse injuries in four sports. The study revealed overuse injuries at rates of 63% for swimmers, 33% for gymnasts and tennis players, and 15% for soccer players. Other studies report the prevalence of overuse injury among different youth sports to range from 37% (skiing and handball) to 68% (running).
Source: American Medical Society for Sports Medicine position statement,Clinical Journal of Sports Medicine, 2014