Please assess the completion status of the following clinical trial:

Trial Title: Immersive Virtual Reality Bicycling for Persons With Parkinson's Disease

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

Eligibility Criteria:
Inclusion Criteria:~* Diagnosis of Parkinson's disease following the UK Brain Bank Diagnostic Criteria,~* Hoehn and Yahr stages II-III,~* 45-80 years old,~* Able to ride a stationary upright bicycle,~* Able to sign informed consent.~Exclusion Criteria:~* Have a recent history of severe heart disease, severe lung disease, uncontrolled diabetes, traumatic brain injury or neurological disorder other than Parkinson Disease,~* Are unable to follow directions or sign a consent form,~* Do not have adequate vision or hearing ability to see or hear a television,~* Have unstable medical condition or musculoskeletal disorder such as severe arthritis, recent knee surgery, hip surgery, or any other condition that the investigators determine would impair the ability to ride the bicycle,~* Have any other medical condition that prevents bicycling,~* Have moderate depression (score of 9 or more on GDS screening tool).

- Gender: ALL
- Minimum Age: 45 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Virtual Reality Bicycling (Type: OTHER): This is a single arm study in which all participants will execute the same three bicycling tasks over one session. Exercise intensity and enjoyment are measured while participants bicycle in a virtual reality environment (wearing virtual reality goggles) in three different conditions lasting approximately 8 minutes each.

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