The database will include demographic characteristics, cardiovascular risk factors and and target-organ damages. Anthropometric measurements (height, weight, and abdominal and neck circumference) will be registered. Daytime sleepiness, quality of sleep and quality of life wiill be evaluated through the respective questionnaires: Epworth sleepiness scale, Pittsburgh Sleep Quality Index (PSQI) and SF-36. In order to evaluate the airway, the Mallampati grade will be used in addition to the adapted assessment protocol from Guimarães (2009). The differences between the final score and the baseline score will be calculated and adjusted by the baseline value found in each of the questionnaires applied. Finally, the analysis excluding the patients with suboptimal adherence to speech therapy treatment (less than 85%) compared to the control group will be redone. If there are benefits of treatment with speech therapy, it will also be offered to the control group after the end of the clinical trial. Statistical analysis will be done in the statistical package SPSS version 19.0 package (SPSS Inc. Chicago, Illinois, USA). Data obtained may be of benefit to future patients and will be used only for statistical purposes. The confidentiality of the information collected will be guaranteed, thus ensuring the privacy and confidentiality of the information. In addition, the data obtained will not be used for other purposes not foreseen in the protocol.
