Please assess the completion status of the following clinical trial:

Trial Title: Adaptive Cardiac Resynchronization Therapy Optimization at Rest and During Exercise (AdOPT CRT)

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

Eligibility Criteria:
Inclusion Criteria:~* Subject is age 18 or greater~* Subject is willing to sign and date the study Informed Consent form~* Subject has been implanted with a clinically indicated CRT-D device (Medtronic Vision 3D or Protecta models) for at least 1 month but less than 7 months from the date of study enrollment~Exclusion Criteria:~* Subject has a history of persistent or permanent AF for which pharmacological therapy and/or cardioversion have been unsuccessful or have not been attempted.~* Subject has atrial or ventricular tachyarrhythmias or frequent atrial or ventricular ectopy at the time of enrollment.~* Subject's resting heart rate at the time of enrollment exceeds 90 bpm.~* Subject had CRT system implanted for more than 7 months from the date of the study enrollment~* Subject has complete AV block.~* Subject had previous mechanical valve surgeries.~* Subject has congenital heart disease.~* Subject has contraindication for an exercise test.~* Subject is unable to perform a sub-maximal exercise test.~* It is not possible to acquire technically acceptable echocardiographic images.~* Subject has medical conditions that would limit study participation.~* Subject is pregnant (all women of child-bearing potential must undergo a pregnancy test within seven days prior to the study visit).~* Subject is enrolled in the Adaptive CRT study~* Subject is enrolled in concurrent studies which could confound the results of this study.~* Subject meets exclusion criteria required by local law

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- CRT pacing at rest and during exercise (Type: EXPERIMENTAL): Rest and sub-maximal exercise

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