Please assess the completion status of the following clinical trial:

Trial Title: Non-invasive Ventilation and Physical Activity

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* restrictive pulmonary function test AND~* symptoms of nocturnal alveolar hypoventilation or~* increased daytime pressure of arterial CO2 (PaCO2) (\>45 mmHg) or~* \>= 10 mmHg increase in PaCO2 during sleep in comparison to a normal awake supine value~Exclusion Criteria:~* patients \< 16 years~* severe cardiac arrythmias or conduction disturbances~* severe mental disturbances~* amyotrophic lateral sclerosis~* total wheelchair-dependent patients

- Gender: ALL
- Minimum Age: 16 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Patients with RLD initiating NIV (Type: OTHER): Patients with RLD initiating NIV according to Belgian Health guidelines are followed-up before and after NIV initiation

Based on this trial design, predict the completion outcome and termination type (if applicable).