Nordic Walking on Knee Osteoarthritis

The goal of this randomized clinical trial is to improve osteoarthritis symptoms and quality of life in older people with knee osteoarthritis from a primary care center. The main question it aims to answer is: * To participate in a Nordic walking reduces pain measured on WOMAC pain dimension? * To participate in a Nordic walking improves mobility measured on WOMAC physical activitiy dimension? Researchers will compare pain and physical activity outcomes between intervention and control arm (randomly allocated).

Osteoarthritis is one of the clinical circumstances that produces the most disability in terms of disability-adjusted life years (DALYs), its main localization is in the knees and hips, the most disabling joints. Ten percent of the adult Spanish population has knee osteoarthritis , which is accompanied by symptoms of pain, mechanical alterations, stiffness, and decreased functionality, constituting one of the most common causes of disability in older people.. Decreased muscle mass and strength of knee extensor-flexor muscles are associated with symptomatic progression of oseoarthritis and lower general health status.