Overly pronated feet cause which of the following muscles to become shortened/stiff?

Overly pronated feet lead to specific alignment and movement patterns that can create muscular imbalances throughout the lower body. In individuals with excessive pronation, the foot rolls inward more than normal during walking or running. This motion can place extra stress on the peroneal muscles, which are located on the outside of the lower leg and play a crucial role in stabilizing the foot and ankle.

When the foot excessively pronates, the peroneals may become overactive in response to the instability created by the rolling motion. This overactivity can lead to these muscles becoming shortened and stiff as they adapt to the continuous demand for stabilization among individuals experiencing over-pronation. Tightness in the peroneals can further contribute to issues in the kinetic chain, affecting the ankles, knees, and hips. Properly addressing and correcting over-pronation often involves stretching and strengthening not only the peroneals but also the surrounding musculature to restore balance and function in the foot and lower limb.