Please assess the completion status of the following clinical trial:

Trial Title: Moderate Intensity Exercise and Phenylketonuria

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

Eligibility Criteria:
Inclusion Criteria:~* plasma phenylalanine concentration of \>1200 micromols at diagnosis~* treated by dietary phenylalanine restriction from early infancy~* willing to participate in this study~* stable BMI of 20-25 for the past 3 months~* currently in average to good physical fitness condition~* physically active 3-4 days per week~Exclusion Criteria:~* previously or are currently taking approved or experimental pharmacologic treatments (i.e.: Biopterin (BH4), sapropterin dihydrochloride (Kuvan), Large Neutral Amino Acids (LNAA), pegylated phenylalanine ammonia lyase (PEG-PAL))~* recent history of weight loss~* endocrine disorder~* pregnant~* anemic~* involved in any other study or research protocol~* participation in a current strength training or performance training regimen

- Gender: MALE
- Minimum Age: 14 Years
- Maximum Age: 17 Years
- Healthy Volunteers: f

Study Arms:
- Sedentary Visit (Type: NO_INTERVENTION): Subjects will do quiet, sedentary activities for 8 hours. Hourly blood draws and breath sampling will be collected. Bolus C13-Lysine will be given at hour 4.
- Exercise Visit (Type: ACTIVE_COMPARATOR): Subjects will do quiet, sedentary activities until hour 5. Blood and breath samples will be collected. At hour 4, subject will consume a bolus of C13-Lysine and immediately walk on a treadmill at a moderate intensity (exercise at 75% of max heart rate) for 45 minutes.

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