IRCT2015092624201N1 IRCT 2016-01-27 Vice chancellor for research, Yasouj University of Medical Sciences . Pilates exercise on symptoms of rheumatoid arthritis patients and lower extremity function - Pilates exercise on symptoms of rheumatoid arthritis patients and lower extremity function 2015-04-30 anticipated 70 Complete https://irct.ir/trial/20491 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive. 2 Rheumatoid arthritis. Intervention 1: Intervention group 1: Patients in the 5 groups of 7 were divided. Pilates exercise 14 one-hour sessions over 3 months on the basis of the protocol and the relevant instructions directly to conduct two intervention groups specializing in physical education in separate groups for men and women was conducted. Each session lasted for an hour. This time includes 10 minutes of warm up exercises before Pilates techniques, 40 minutes of Pilates exercises (with a gradual increase to 20 minutes) and finally cooling was 10 minutes.All exercises with the principle of progressive overload in the number of repetitions and duration of each movement held during the 14th session of the training program was designed. First, the number of repetitions of 3 motion Pilates exercises in the context of each subject and gradually increased up to 10 moves. The length of each of the first 15 seconds to start and gradually increased to 1 minute .(Meeting include: first and second practice session Hundred . Third and fourth practice sessions Clam. fifth and sixth session practice Twist. seventh and eighth session practice Scissor . ninth and tenth session practice Kick. eleven and twelve session practice Circle . Thirteen and fourteen session practice Rise.). Intervention 2: Control group: People in the control group will not receive any intervention .