Achilles tendinopathy is a common overuse injury that leads to pain and functional limitations. Traditional rehabilitation focuses on eccentric strengthening, which has been widely studied for its benefits in promoting tendon remodeling and improving strength. However, recent research suggests that isometric contractions may offer superior pain modulation effects, especially in the early stages of rehabilitation.

This study aims to compare the effectiveness of isometric contraction-based pain modulation versus eccentric strengthening in treating Achilles tendinopathy. Isometric exercises involve maintaining a static muscle contraction, which has been shown to reduce pain through neuromuscular mechanisms, potentially making it a valuable alternative or complement to eccentric loading.

Inclusion Criteria:

• Clinically Diagnosed with Achilles Tendinopathy using MRI
• At least 3 months incidence period of Achilles Tendinopathy
• Must be able to attend all treatment sessions and follow-up assessments.
• Ability to walk independently without any assistive devices.

Exclusion Criteria:

• Severely restricted ROM of ankle
• Patients who underwent surgery for Achilles tendinopathy
• Patients who had undergone previous surgery of lower limb extremity
• Those using ankle orthosis
• Patients with systemic diseases affecting ankle (osteoarthritis, rheumatoid arthritis, and osteoporosis)
• Individuals with neurological disorders affecting the lower limbs.
• Systemic Conditions like diabetes, cardiovascular diseases.