Please assess the completion status of the following clinical trial:

Trial Title: Effect of Short-term Simulated Altitude Exposure on Cardiopulmonary Functional Capacity

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Healthy male and female individuals aged 50-70 years with sedentary lifestyles.~Exclusion Criteria:~* Known intolerance to altitude identified by the participant's clinical examination, history and pre-altitude screening completed by the research clinician.~* Non-availability and/or suitability to complete the required residential period within the altitude centre.

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: 70 Years
- Healthy Volunteers: t

Study Arms:
- Hypoxia (Type: EXPERIMENTAL): Mild hypoxia of 15% oxygen, equivalent altitude of 2440m over a period of 7 days
- Normoxia (Type: SHAM_COMPARATOR): Exposure to normal, sea-level air

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