Tendon pain from overuse is a common problem in sports activity. It occurs when the cumulative load on the tendon is greater than what the tendon can take. There is two parts to this: the first will be the cumulative load and that means just how much exercise is taken on and just how frequently this is done. It is crucial that the tendon has time to adapt to those loads or the collective load might exceed that. Which is the second part, just how adapted the tendon would be to those loads. Being familiar with these principles is crucial in being familiar with and dealing with tendonitis.
By way of example, peroneal tendonitis which is an excessive use injury that occurs on the outside of the ankle joint. The collective load in this tendon is higher when exercise levels are too high or increased too quickly and not sufficient time is provided for the tendon to adapt to those higher loads. The cumulative load is also increased by the biomechanics of the foot. As an example, if the supination resistance of the foot is lower then the peroneal muscles on the outside of the lower limb will have to work harder. That could place an greater stress on the peroneal tendons and then along with training errors that load will probably exceed what the tendon can take and it develops tendonitis.
Based on these concepts, peroneal tendonitis is managed by lessening that collective load. That could mean exercising volumes and frequency ought to be decreased somewhat to permit the tendon to adjust to the loads. The strain in this disorder may also be decreased with foot orthoses that evert the foot, which means the peroneal muscles does not need to work so hard. Then the tendon must be given a chance to get used to the loads. This implies that training quantity and frequency ought to be slowing increased, with lots of rest between training loads to get the tendon to adapt to those loads.