 The apnea-hypopnea index AHI was calculated by total number of respiratory events apneas and hypopneas per hour of sleep. Obstructive sleep apnea OSA was defined as a cessation of respiratory airflow for 10 seconds with thoracoabdominal effort, which was detected by Piezo respiratory effort sensor. Individuals with 70 of obstructive events were defined as individuals with OSA. 