Effectiveness and Safety of Physical Exercises in the Improvement of the Sleep Quality. Regarding Rheumatoid Arthritis

Inclusion Criteria: • Women ages 35-65 years diagnosed with Rheumatoid Arthritis according with the American College of Rheumatology (ACR) and European League Against Rheumatism (EULAR)Criteria; Pittsburgh Sleep Quality Index ≥ 5; electrocardiogram test (ECG) at rest and at regular effort. Exclusion Criteria: * Patients with joint restrictions due to disease. * Other rheumatoid-associated diseases (Fibromyalgia) with the exception of Osteoarthritis of low degree. * Those who are uncontrollably hypertense, diabetic, with thyroidopathy and cardiorespiratory diseases which stop them from practicing exercises. * Class II obesity (IMC ≥ 35 Kg/m2). * Cognitive deficits. * Depression. * Patients not following the study rules such as exercise hours and / or time for the proposed program. * Current physical exercise practitioner. * Those undergoing medication treatment which would interfere sleep. * Night shift workers who disrespect regular working schedule.