Every individual reacts differently to pain and as a result, pain is different to treat. Pain can erupt from damage to any tissue and persist even in the absence of tissue damage. Previous literature suggest that people move differently in the presence of pain, before the pain has begun and after the resolution of pain. Pain can cause physiological barriers in individuals with chronic pain, this can put a negative effect on everyday activities. One theory proposes that pain leads to inhibition of muscle activity, which can contribute to difficulty performing daily activities.  One hundred million adults in America suffer from chronic pain, surpassing the number of individuals affected by diabetes, cancer, and heart disease combined. This study focuses on Insertional Achilles tendinopathy (IAT), which is a type of chronic pain that impacts ankle function. IAT does not respond well to traditional physical therapy care, which primarily targets ankle strength and flexibility. However, we hypothesize that pain itself, rather than weakness and/or limitations in flexibility, contributes to disability.