Please assess the completion status of the following clinical trial:

Trial Title: Acute Effects of Beet Juice Consumption on Exercise Capacity in Heart Failure

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE1/PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* New York Heart Association (NYHA) class II-III heart failure~* receiving optimal medical therapy~* sedentary~Exclusion Criteria:~* smoking~* changes in medication or major cardiovascular (CV) event or procedure within the previous 6 wk~* fixed rate pacemaker~* unstable angina~* other co-morbidities or limitations that preclude safe participation in the exercise testing~* plans for hospitalization or cardiac transplantation within the next 2 months~* type 1 diabetes~* refusal or inability to provide informed consent

- Gender: ALL
- Minimum Age: 55 Years
- Maximum Age: 90 Years
- Healthy Volunteers: f

Study Arms:
- placebo (Type: PLACEBO_COMPARATOR): placebo drink, single dose, taste and color-matched to experimental drink
- beet juice concentrate (Type: EXPERIMENTAL): single dose of beet juice concentrate, roughly 70 mL

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