The Effectiveness of Anti-Gravity Treadmill Training

A prospective, randomized, parallel group controlled clinical study is proposed. The
patients will be divided into the two study groups according to the surgical procedure:

1. patients undergoing one-level microdiscectomy for lumbar herniated disc

2. patients undergoing one-level lumbar fusion for degenerative disc disease without
notable spinal stenosis.

Each group will consist of 60 patients (see sample size calculations below) who will be
randomized into the two equal groups to undergo:

1. Standard postoperative rehabilitation program

2. Standard postoperative rehabilitation program with addition of lower body positive
pressure (LBPP) treadmill training

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