| Trainer variability during step training after spinal cord injury: Implications for robotic gait-training device design. | |
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MedLine Citation:
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PMID: 21480089 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Robotic devices are being developed to automate repetitive aspects of walking retraining after neurological injuries, in part because they might improve the consistency and quality of training. However, it is unclear how inconsistent manual training actually is or whether stepping quality depends strongly on the trainers' manual skill. The objective of this study was to quantify trainer variability of manual skill during step training using body-weight support on a treadmill and assess factors of trainer skill. We attached a sensorized orthosis to one leg of each patient with spinal cord injury and measured the shank kinematics and forces exerted by different trainers during six training sessions. An expert trainer rated the trainers' skill level based on videotape recordings. Between-trainer force variability was substantial, about two times greater than within-trainer variability. Trainer skill rating correlated strongly with two gait features: better knee extension during stance and fewer episodes of toe dragging. Better knee extension correlated directly with larger knee horizontal assistance force, but better toe clearance did not correlate with larger ankle push-up force; rather, it correlated with better knee and hip extension. These results are useful to inform robotic gait-training design. |
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Authors:
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Jose A Galvez; Amy Budovitch; Susan J Harkema; David J Reinkensmeyer |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of rehabilitation research and development Volume: 48 ISSN: 1938-1352 ISO Abbreviation: J Rehabil Res Dev Publication Date: 2011 |
Date Detail:
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Created Date: 2011-04-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8410047 Medline TA: J Rehabil Res Dev Country: United States |
Other Details:
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Languages: eng Pagination: 147-60 Citation Subset: IM |
Affiliation:
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Departments of Mechanical and Aerospace Engineering and Biomedical Engineering, University of California at Irvine, Irvine, CA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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