<unk>  (or<unk> -related<unk> , RRI) affect about half of runners annually. The frequencies of various RRI depend on the type of<unk> , such as speed and mileage. Some<unk>  are acute, caused by sudden overstress, such as side stitch, strains, and sprains. Many of the common<unk>  that affect runners are chronic, developing over longer periods as the result of overuse. Common overuse<unk>  include shin splints, stress fractures, Achilles tendinitis, Iliotibial band syndrome, Patellofemoral pain (runner's knee), and plantar fasciitis. Proper<unk>  form is important in injury prevention. A major aspect of<unk>  form is foot strike pattern. The way in which the foot makes contact with the ground determines how the force of the impact is distributed throughout the body. Different types of modern<unk>  shoes are created to adjust the foot strike pattern in an effort to reduce the risk of injury. In recent years, barefoot<unk>  has increased in popularity in many Western countries, because of claims that it reduces the risk of injury. However, this has not been proven and is still debated.
Running injuries
Blast injury
Microtrauma
Barotrauma
Avulsion injury
Electrical injury
Blunt trauma
Stingray injury