Please assess the completion status of the following clinical trial:

Trial Title: Early Chair Sitting Exercise in Mechanically Ventilated Critically Ill Patients

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Acute respiratory failure~* Requiring mechanical ventilation for more than 48 h~* Informed consent~Exclusion Criteria:~* Body mass index \> 40 kg/m2~* Severe neuropathy~* Hemodynamic instability, acute cor pulmonary embolism, acute myocardial ischemia/necrosis, hypoxemia~* Deep sedation

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 90 Years
- Healthy Volunteers: f

Study Arms:
- Standard group (Type: NO_INTERVENTION): None
- Chair sitting group (Type: OTHER): None

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