"New Perspectives of Adaptation to NIV in ALS"

Each person recruited after a respiratory evaluation (baseline spirometry and supine, maximal inspiratory and expiratory pressures (MIP / MEP) or sniff nasal inspiratory pressure (SNIP), 6 Minute Walking Test (6MWT) -if still ambulatory, arterial blood gas, nocturnal polygraphy) will be adapted to Non Invasive Ventilation (NIV). Moreover, the subject will be brought to the management of bronchial secretions (under the terms set out herein) during not less than five outpatient or house accesses, depending on who is randomly assigned to the experimental group or the control group. These accesses will take place weekly, for a period of two months, considering both the needs and the patient's clinical condition.