Novel gait adaptation and neuromotor training results using an active leg exoskeleton
Abstract
The gait of every adult is unique and expected to be ingrained within the neuromuscular system. The major scientific question that we ask in this paper if it is possible to alter the gait of healthy individuals using special purpose design of robots and training paradigms. This paper describes novel experimental results with an active leg exoskeleton (ALEX) and a force-field controller (FFC) developed for neuromotor training of gait and rehabilitation of patients with walking disabilities. ALEX is a motorized leg orthosis having a total of 7 DOFs with hip and knee actuated in the sagittal plane. The FFC applies forces on the foot to help the leg move on a desired trajectory. The interaction forces between the subject and the orthosis are designed to be ¿assist-as-needed¿ for safe and effective gait training. Simulations and experimental results with the FFC are presented. Experiments have been performed on six healthy subjects walking on a treadmill. It was shown that a healthy subject could be retrained in about 45 min with ALEX to walk on a treadmill with a considerably altered gait. In the coming months, this powered orthosis will be used for gait training of stroke patients.
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The effectiveness of ALEX has been demonstrated through clinical trials with stroke survivors.
“The effectiveness of ALEX has been demonstrated through clinical trials with stroke survivors [28], [29].”
From Recent developments and challenges of lower extremity exoskeletons (2016) · cites this paper as [29]
After training with ALEX, stroke survivors' gait pattern is closer to a healthy gait pattern with increased gait size and walking speeds.
“After training with ALEX, the patients' gait pattern are closer to a healthy gait pattern with increased gait size and walking speeds.”
From Recent developments and challenges of lower extremity exoskeletons (2016) · cites this paper as [29]
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- Authors
- Banala, S. K., Agrawal, S. K., Kim, S. H., & Scholz, J. P.
- Affiliations
- University of Delaware (US)
- University of South Florida (US)
- ORCID
- Agrawal, S.K.
- Venue
- IEEE/ASME Transactions on Mechatronics
- Published
- 2010-04
- Volume
- 15
- Issue
- 2
- Pages
- 216-225
- ISSN
- 1083-4435 (ISSN-L)
- 1941-014X
- OpenAlex
- W2099726059
- Cited by
- 165
- References
- 33
- Citations by year
- 2026: 5 · 2025: 6 · 2024: 11 · 2023: 9 · 2022: 11 · 2021: 12 · 2020: 13 · 2019: 17 · 2018: 14 · 2017: 12 · 2016: 7 · 2015: 13 · 2014: 11 · 2013: 11 · 2012: 6
- FWCI
- 4.53
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE/ASME Transactions on Mechatronics (publishedVersion)
- The Royal Society of Chemistry’s Journals, Books and Databases (The Royal Society of Chemistry) (submittedVersion)
- Funders
- National Center for Medical Rehabilitation Research
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Prosthetics and Rehabilitation Robotics
- Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
- Health Sciences › Health Professions › Physical Therapy, Sports Therapy and Rehabilitation › Balance, Gait, and Falls Prevention
- Keywords
- gait adaptation, treadmill walking, powered orthosis, stroke rehabilitation, gait rehabilitation, assist-as-needed control, healthy volunteers
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