Achilles tendinopathy is a common overuse injury among runners, characterized by pain, stiffness, and impaired function of the Achilles tendon. It is often caused by repetitive mechanical loading, poor biomechanics, or inadequate recovery periods. The

condition significantly affects athletic performance and may lead to long-term functional limitations if not managed effectively. Traditionally, eccentric loading protocols have been the mainstay of treatment, but recent studies have shown promising results with Heavy Slow Resistance (HSR) training, which focuses on controlled, high-load exercises to promote tendon remodeling and strength. On the other hand, Sensorimotor training, which includes balance and proprioception-based exercises, aims to restore neuromuscular control and joint stability, especially in athletes who require fine motor coordination and dynamic balance.

While both interventions have demonstrated individual benefits in Achilles tendinopathy management, there is limited comparative evidence on their relative effectiveness in improving pain, functional ability, and athletic performance specifically in runners. Understanding the comparative outcomes of these two approaches is critical for clinicians, coaches, and rehabilitation professionals seeking optimal treatment strategies tailored to running populations.

Therefore, this study aims to evaluate and compare the effectiveness of heavy slow resistance training and sensorimotor training on reducing pain, enhancing functional ability, and improving performance in runners with Achilles tendinopathy.