 The primary endpoint is the reduction of final apnea-hypopnea index AHI with respect to baseline. Assuming an alpha level of 0.05 and a bilateral approach to have 80 statistical power, the investigators estimate a final sample size of 42 patients is required to detect a 15 point difference in AHI between the intervention and control groups clinically relevant difference, with a standard deviation of 15 visit 9 and accounting for a 25 rate of attrition. Balanced groups are expected. 