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BACKGROUND According to the World Health Organization (WHO), cerebrovascular accident (Stroke) is defined as an acute neurological dysfunction that occurs due to a change in the brain circulation, resulting in signs and symptoms that compromise specific brain sites, persisting for more than 24 hours. With the high rate of stroke patients, it becomes the leading cause of acquired disability worldwide. There is a range of symptoms that stroke causes, in which motor changes become the most evident and feared symptoms by the patient, as they are the causes of several functional limitations, directly interfering with activities of daily living (ADL's) and possibly causing psychological disorders. Anxiety disorder (ED) is one of the psychological disorders that the subject after stroke may have. This disorder is characterized as a state of discouragement, distress and fear, which causes a series of symptoms, such as tachycardia, muscle tension, chronic pain, among others. These emotional and physical changes may be beneficial or harmful to the regularization of the disorders that stroke causes. Burton et al. (2014) report that 20% to 25% of patients diagnosed with stroke will have ED at some point in their life and that phobic disorders and generalized anxiety are the most common types of ED following stroke. ED are directly linked to reactional psychological factors, in which most of the patients' reports concern themselves that they can no longer control their reactions, no longer speak, have no postural, emotional and cognitive control, among others, and this consequently reflects decreased patient's quality of life, physical changes, as well as inefficient treatment. Postural balance is the ability to hold the body in the desired position and orientation, in which the center of mass is held on its support base. The body needs to receive sensory and motor information about its posture in space and the environment in order to maintain balance. Sensory systems are responsible for maintaining balance, being vision, vestibular and somatosensory, and all these systems suffer changes in patients with stroke sequelae and studies bet that anxiety is likely to influence the inability of the subject to use these systems, enhancing the postural imbalance in stroke patients. Thus, the aim of the study was to verify whether there is a relationship between anxiety and static and dynamic balance of patients diagnosed with stroke.

Relationship between anxiety and static and dynamic balance disorder in subjects with cerebrovascular accident (stroke) diagnosis.