Walking Function in Diabetic Peripheral Neuropathy

Inclusion Criteria for All Participants: 1. Age 45+ years 2. Able to walk 10-meters independently without an assistive device 3. Sufficient cardiovascular and musculoskeletal health to walk on a treadmill for 1-minute at self-selected speed Inclusion Criteria for Participants with DPN: 1. Diagnosis of DM 2. Diagnosis of DPN by a physician 3. Foot examination within the past 6 months to document ambulatory status 4. Physician's clearance Exclusion Criteria for Healthy Able-Bodied Individuals: 1. History of neurologic disease 2. History of orthopaedic disease affecting the lower extremities 3. History of injury or pain affecting the lower extremity or walking function within the past 6 months Exclusion Criteria for All Participants: 1. History of amputation 2. Active ulceration 3. Medial column deformity 4. History of Charcot osteoarthropathy 5. History of posterior muscle group lengthening 6. History of lower extremity joint replacement 7. History of lower extremity and/or foot surgery affecting walking mechanics 8. Orthopaedic problems of the lower limbs or spine due to other medical conditions (not DM or DPN) that limit walking or cause pain during walking 9. Improper footwear for walking and community ambulation 10. Cardiovascular or medical condition affecting ability to walk safely 11. History of unexplained dizziness or fainting in the past 2 months 12. Allergy to adhesive tape or rubbing alcohol 13. Individuals who are pregnant, prisoners, or not yet adults 14. Inability to communicate with the investigators 15. Inability to provide written informed consent