Please assess the completion status of the following clinical trial:

Trial Title: Rates of Recovery From Strenuous Exercise in Physically Active Older Adults

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Sedentary (exercise \< 1 time/week) or well-trained individuals (exercise ≧ 2 times/week)~* Ages 18-39 and 50-80 years~* Individuals who can safely exercise~Exclusion Criteria:~* Individuals who reports Symptoms or Signs Suggestive of Disease on the Health Research Questionnaire (heart and respiratory problems, dizziness and ankle edema).~* Individuals who report substance abuse within the last 6 months (elicit drugs, alcohol)~* Smokers

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

Study Arms:
- Young Fit (Type: EXPERIMENTAL): Young (18-39 yrs) people who have endurance training habit
- Young Unfit (Type: EXPERIMENTAL): Young (18-39 yrs) people who have sedentary lifestyle.
- Older Fit (Type: EXPERIMENTAL): Older (50-80 yrs) people who have endurance training habit
- Older Unfit (Type: EXPERIMENTAL): Older (50-80 yrs) people who have sedentary lifestyle

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