ongoing trials trial from www.clinicaltrials.gov Modeling of Chest Physiotherapy Using Impedance Measurements (PHYSIOMOD) - Recruiting Year: 2019 Date: January 10, 2019 Author: Assistance Publique - Hôpitaux de Paris Source https://ClinicalTrials.gov/show/NCT04094441 Study design (if review, criteria of inclusion for studies) Interventional - Intervention Model: Single Group Assignment|Masking: None (Open Label)|Primary Purpose: Basic Science Participants Cystic Fibrosis - 4 Years to 18 Years (Child, Adult) Interventions Other: chest physiotherapy Outcome measures Impedance measurements will be obtained before and after chest physiotherapy using the Impulse Oscillometry System. Related topics Active cycle of breathing technique in cystic fibrosis Oscillating devices in cystic fibrosis Positive expiratory pressure in cystic fibrosis