Detailed measurements and questionnaires: Measurement of pharyngeal volume by acoustic pharyngometry in sitting and lying position with calculation of pharyngeal compliance. Measurement of ventilation (15 minutes) and transcutaneous PCO2 measurement, three apnea tests at the end of the test, hyperventilation test. PFT with spirometry and static volume measurement. Multiple flow measurement of exhaled NO with calculation of bronchial flow and alveolar fraction of NO. Nasal NO measurement. Questionnaires for OSA: the Pediatric Sleep Questionnaire (PSQ) and the SCR (Sleep Clinical Record). Questionnaires for functional respiratory disorder: French hyperventilation questionnaire SHAPE and the Nijmegen score
