Control group will perform a balance training program in a virtual environment (gaming system with balance board device - eight games of Nintendo Wii Fit®, for 14 sessions) with verbal and manual physiotherapeutic intervention. Initially, instructions about the rules and strategies of how to play the game and control the avatar will be provided. Then the patient will be invited to start the game, and in the first attempt of the training physiotherapist will provide manual and verbal assistance, providing corrections on movement (avoiding compensatory movements). In the second attempt, no manual or verbal assistance will be provided (only ensuring patient safety, providing motivational verbal stimuli), allowing the patient to organize his or her performance.

The 6MWT is a practical simple test. This test measures the distance that a patient can quickly walk on a flat, hard surface in a period of 6 minutes (the 6MWD). The 6MWT has been used as a measure of functional status of patients.

The Limits of Stability subtest quantifies the maximum distance a person can intentionally displace their center of pressure (COP) from start position of midline COP centered over the base of support to eight targets. Location and movement of the COP was indicated by a cursor display projected on a screen in front of the subject. As targets were highlighted, the subject was to move the COP cursor quickly and accurately as possible towards a target located on the Limits of Stability perimeter and hold position as close to the target as possible. The parameters include COP movement velocity and directional control (% to target).

The Rhythmic Weight Shift quantifies the subject's active weight shift ability by moving the COP cursor to match velocity and direction of a moving visual target in the medial- lateral (ML) and anterior-posterior (AP) directions at three different velocities.

Stroke Quality of Life Scale is a self-report assessment that includes 12 stroke subscales with 49 items. The Stroke Specific Quality of Life Scale attempts to capture the domains of stroke QOL that are insufficiently assessed with generic QOL measures. The 12 subscales, which are unidimensional, are Energy, Family Role, Language, Mobility, Mood, Personality, Self-Care, Social Roles, Thinking, Upper Extremity Function, Vision, and Work-Productivity. Participants responded to each item on a 5-point scale. Domain scores are the averages of the item scores, and the total score is the average of the domain scores. All summary scores therefore range from 1 to 5. Higher scores indicate better function.