Video-game training or conventional physiotherapy

Intervention: Group-based conventional therapy (control group): group of 16 patients will perform conventional therapy based on European guidelines physical therapy in Parkinson's disease. The conventional physical therapy sessions will be conducted in groups, lasting for one hour each session, twice a week for seven weeks. These conventional physical therapy sessions will consist of warming, static and dynamic balance training with external clue, physical fitness, muscular strength training, muscular flexibility training and training transfers through cognitive strategies. Warming will be performed for ten minutes by gait in a circle with a patient behind each other starting with free running and progressing with gait associated with a flexion-extension movement of the upper limbs alternately; gait associated with elevation shoulders; gait associated with an abduction-adduction movement of the upper limbs; and bypassing gait cones that are arranged in two rows.The balance training will be performed for fifteen minutes by means of static balance exercise with the use of external cues in which the patient must step on the color required on two feet while remaining stable in the transition from one color to the next; dynamic balance and rhythm through posterior and anterior gait on double carrying a ball between the abdominal region without dropping it; gait in dual task in which the patient will be asked to stand the chair cross a distance of 10 meters, is expected to open a bottle of water, to serve up to half of the cup, to put in the tray and return to the beginning. Physical fitness will be performed for fifteen minutes through exercise bike. Muscle strength training will be performed for fifteen minutes through concentric isotonic exercises with progressive load in the sitting p;Other;H02.010.625;I03.450.642.693.930;E02.779.483;G11.427.590.530.698.277 Primary outcome: PRIMARY OUTCOME EXPECTED: analysis of the change in the static postural balance and limits of stability modification verified through measure of center of pressure displacement (COP) in force plate (Balance Rehabilitation UnitTM) at an acquisition frequency of 100Hz. The mean and standart deviation of the displacement (range) of CoP trajectory will be recorded in medial-lateral (ML) and anterior-posterior (AP) directions and then will be analyzed in the three periods of evaluation of the study, both the control and experimental group, by using the statistical program SPSS version 20 (IBM Corp.). The static postural balance will be evaluated in 10 different situations: orthostatic position on firm ground with eyes open and eyes closed, orthostatic position on the foam with eyes closed; orthostatic position on firm ground with saccadic stimulation;orthostatic position on firm ground with optokinetic stimulation with horizontal direction from left to right;orthostatic position on firm ground with optokinetic stimulation with horizontal direction from right to left; orthostatic position on firm ground with vertical optokinetic stimulation with direction from the top down;orthostatic position on firm ground with optokinetic stimulation with vertical direction from the bottom up; orthostatic position on firm ground with optokinetic stimulation with horizontal direction associated with movements of head rotation;and orthostatic position on firm ground with vertical optokinetic stimulation direction associated with movements of flexion-extension of the head. Each position will be maintained for 60 seconds. Secondary outcome: SECONDARY OUTCOME EXPECTED: Analysis to the improvement in postural control, functional mobility, cognition and quality of life using scales and / or questionnaires. Means and standard deviations of the scores obtained in the scale will be analyzed in the three periods of evaluation of the study, both the control and experimental group, by using the statistical program SPSS version 20 (IBM Corp.). The improvement in postural control will be assessed by Mini-Balance Evaluation Systems Test,scale consists of 14 items that assess the dynamic balance, session with each performance is evaluated normal (2) to severe (0), being that the smaller the final score, the worse the postural control; Improved functional mobility verified through time in seconds for the test to stand, walk and sit (Timed up and go test). The improved functional mobility and the risk of falls will be evaluated eight tasks involving gait in different sensorial contexts, including flat surface, changes in gait speed, horizontal and vertical head motions, go over and around obstacles, turning on his own body and up and down stairs through Dymanic Gait Index test. The improvement of cognition will be assessed by the Montreal Cognitive Scale which assesses different cognitive domains such as spatial and visuo executive functions, naming, memory, attention, language, abstraction, late evocation and orietation, with a total score of 30 points where higher scores than or equal to 26 indicate normal performance. The quality of life will be assessed by the Brazilian version of Parkinson's Disease Questionnaire consists of 39 items divided into 8 dimensions that include mobility, activities of daily life, emotional well-being, stigma, social support,cognition, communication and corporal discomfort, with scores ranging between 0 (no problem) to 100 (maximum problem, where a lower score indicates better perception by the individual for quality of life.