Causes of Achilles Tendonitis
Achilles tendonitis is an overuse injury. Too much too soon is the basic cause of overuse injuries, however other factors can contribute to developing the condition.
Increase in activity (either distance, speed or hills).
Less recovery time between activities.
Change of footwear or training surface.
Weak calf muscles.
Decreased range of motion at the ankle joint, usually cause by tight calf muscles.
Running up hills
- the achilles tendon has to stretch more than normal on every stride. This is fine for a while but will mean the tendon will fatigue sooner than normal.
Overpronation or feet which roll in when running can place an increased strain on the achilles tendon. As the foot rolls in (flattens) the lower leg also rotates inwards which places twisting stresses on the tendon.
Wearing high heels constantly shortens the tendon and calf muscles. When exercising in flat running shoes, the tendon is stretched beyond its normal range which places an 'abnormal' strain on the tendon