Please assess the completion status of the following clinical trial:

Trial Title: Effects of Intense Aerobic Exercise on the Cerebrovascular Reserve Capacity in Patients With Hemodynamically Relevant Intra- and Extracranial Stenoses

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

Eligibility Criteria:
Inclusion Criteria:~* high-grade stenosis of the intra- or extracranial ICA or the MCA with ipsilateral impairment of the CVR capacity measured by TCD~Exclusion Criteria:~* continuous physical activity ≥ 60 min/week within the last 3 months~* cerebral bleeding or ischaemic stroke \< 3 months~* contraindications for spiro-ergometry, IAEx, or MRI

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Sedentary (Type: NO_INTERVENTION): patients who train after an 8 week observational period
- patients who train immediately after enrollment (Type: ACTIVE_COMPARATOR): patients who train immediately after enrollment

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