Please assess the completion status of the following clinical trial:

Trial Title: The Effectiveness of Anti-Gravity Treadmill Training

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

Eligibility Criteria:
Inclusion Criteria:~* Adults between 18 and 65 years old~* Willing and able to comply with protocol and PT requirements~* Patients with primarily radicular and back pain due to degenerative disc disease requiring one-level discectomy for herniated disc or lumbar fusion between L2 and S1~* Willing and able to sign a study specific informed consent~Exclusion Criteria:~* Require more than one-level surgery~* No previous lumbar surgery~* Any ongoing health condition that would make it difficult to adhere to postoperative PT requirements~* Peri-operative or post-operative complications (infection, pneumonia, nerve injury, dural tear, etc.) that would constraint or delay the ability to participate in postoperative PT~* BMI greater than 40~* Active local or systemic infection

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- AlterG and Physical therapy (Type: None): 2) Standard postoperative rehabilitation program with addition of lower body positive pressure (LBPP) treadmill training
- Control group (Type: None): 1) Standard postoperative rehabilitation program

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