Affiliations: [a] Department of Physical Therapy, College of Medical Rehabilitation, Qassim University, Buraydah, Saudi Arabia
| [b] Baylor Scott & White Institute for Rehabilitation, Dallas, TX, USA
| [c] School of Physical Therapy, Texas Woman’s University, Dallas, TX, USA
| [d] Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, KY, USA
Correspondence:
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Address for correspondence:Sattam Almutairi, Department of Physical Therapy, Qassim University, King Abdulaziz Rd, 52571, Buraydah, Saudi Arabia. E-mail: [email protected].
Abstract: BACKGROUND:Robotic exoskeleton (RE) enables individuals with lower extremity weakness or paralysis to stand and walk in a stereotypical pattern. OBJECTIVE:Examine whether people with chronic incomplete spinal cord injury (SCI) demonstrate a more typical gait pattern when walking overground in a RE than when walking without. METHODS:Motion analysis system synchronized with a surface electromyographic (EMG) was used to obtain temporospatial gait parameters, lower extremity kinematics, and muscle activity in ambulatory individuals with SCI and healthy adults. RESULTS:Temporospatial parameters and kinematics for participants with SCI (n = 12; age 41.4±12.5 years) with and without RE were significantly different than a typical gait (healthy adults: n = 15; age 26.2±8.3 years). EMG amplitudes during the stance phase of a typical gait were similar to those with SCI with and without RE, except the right rectus femoris (p = 0.005) and left gluteus medius (p = 0.014) when participants with SCI walked with RE. EMG amplitudes of participants with SCI during the swing phase were significantly greater compared to those of a typical gait, except for left medial hamstring with (p = 0.025) and without (p = 0.196) RE. CONCLUSIONS:First-time walking in a RE does not appear to produce a typical gait pattern in people with incomplete SCI.
