Running or jogging for fitness or competition might sound like a straightforward activity, however up to 50 % of all runners can get some type of injury every year. That injury might be relatively minor and they run through the injury until it gets better or it may be significant enough for them to have to stop running or jogging. The most frequent reason for these running injuries is that the runner basically over did the running. They ran too much before the body has been given a chance to adapt or get used to the distances being run. Every time that a load is applied to the body it is essential to give it a rest before you apply another load by going for another run. If too much load is applied before recuperation from a previous workout, any damage get exacerbated and this could progress into an injury. Rest is equally as essential as the training runs and that is how fitness and strength is increased and is also how injury is avoided.
In addition to the too much too soon situation, biomechanics also has a role. This is the way that we run and different athletes do it in different ways. Different running techniques will affect different tissues in a different way and affect some tissues too much, so that when running that might be enough to cause a running injury. For example, disorders such as medial tibial stress syndrome (shin splints) can occur when the distance between the foot placement when running is too narrow. Runners with this problem can benefit from running with a wider base of gait. Another frequent biomechanical problem in runners is tight calf muscles. When running this makes the mid-foot (arch) of the foot to collapse or overpronate and can result in a a range of injuries such as plantar fasciitis to runners knee. These runners may benefit the most from a calf muscle stretching program. The management of running injuries will depend on the cause and should be directed at that cause, whether its biomechanics to training load issues.