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"Sung Phil Yang"

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"Sung Phil Yang"

Original Articles
Energy Efficiency and Patient Satisfaction of Gait With Knee-Ankle-Foot Orthosis and Robot (ReWalk)-Assisted Gait in Patients With Spinal Cord Injury
Seung Hyun Kwon, Bum Suk Lee, Hye Jin Lee, Eun Joo Kim, Jung Ah Lee, Sung Phil Yang, Tae Young Kim, Han Ram Pak, Hyun Ki Kim, Hae Young Kim, Joo Hwan Jung, Sang Wook Oh
Ann Rehabil Med 2020;44(2):131-141.   Published online April 29, 2020
DOI: https://doi.org/10.5535/arm.2020.44.2.131
Objective
To compare the energy efficiency of gait with knee-ankle-foot orthosis (KAFO) and robot-assisted gait and to develop a usability questionnaire to evaluate the satisfaction of walking devices in paraplegic patients with spinal cord injuries.
Methods
Thirteen patients with complete paraplegia participated and 10 completed the evaluation. They were trained to walk with KAFO (KAFO-gait) or a ReWalk robot (ReWalk-gait) for 4 weeks (20 sessions). After a 2-week wash-out period, they switched walking devices and underwent 4 additional weeks of training. Two evaluations were performed (after 2 and 4 weeks) following the training periods for each walking device, using the 6-minute walking test (6MWT) and 30-minute walking test (30MWT). The spatiotemporal variables (walking distance, velocity, and cadence) and energy expenditure (heart rate, maximal heart rate, the physiologic cost index, oxygen consumption, metabolic equivalents, and energy efficiency) were evaluated duringthe 6MWT and 30MWT. A usability evaluation questionnaire for walking devices was developed based on the International Organization for Standardization/International Electrotechnical Commission guidelines through expert consultation.
Results
The ReWalk-gait presented significant advantages in energy efficiency compared to KAFO-gait in the 6MWT and 30MWT; however, there were no differences in walking distance or speed in the 30MWT between ReWalk-gait and KAFOgait. The usability test demonstrated that ReWalk-gait was not superior to KAFO-gait in terms of safety, efficacy, efficiency, or patient satisfaction.
Conclusion
The robot (ReWalk) enabled patients with paraplegia to walk with lower energy consumption compared to KAFO, but the ReWalk-gait was not superior to KAFO-gaitin terms of patient satisfaction.

Citations

Citations to this article as recorded by  
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    PLOS ONE.2021; 16(5): e0252193.     CrossRef
  • 10,841 View
  • 377 Download
  • 42 Web of Science
  • 42 Crossref
Clinical Characteristics of Proper Robot-Assisted Gait Training Group in Non-ambulatory Subacute Stroke Patients
Soo Jeong Kim, Hye Jin Lee, Seung Won Hwang, Hannah Pyo, Sung Phil Yang, Mun-Hee Lim, Gyu Lee Park, Eun Joo Kim
Ann Rehabil Med 2016;40(2):183-189.   Published online April 25, 2016
DOI: https://doi.org/10.5535/arm.2016.40.2.183
Objective

To identify the clinical characteristics of proper robot-assisted gait training group using exoskeletal locomotor devices in non-ambulatory subacute stroke patients.

Methods

A total of 38 stroke patients were enrolled in a 4-week robotic training protocol (2 sessions/day, 5 times/week). All subjects were evaluated for their general characteristics, Functional Ambulatory Classification (FAC), Fugl-Meyer Scale (FMS), Berg Balance Scale (BBS), Modified Rankin Scale (MRS), Modified Barthel Index (MBI), and Mini-Mental Status Examination (MMSE) at 0, 2, and 4 weeks. Statistical analysis were performed to determine significant clinical characteristics for improvement of gait function after robot-assisted gait training.

Results

Paired t-test showed that all functional parameters except MMSE were improved significantly (p<0.05). The duration of disease and baseline BBS score were significantly (p<0.05) correlated with FAC score in multiple regression models. Receiver operating characteristic (ROC) curve showed that a baseline BBS score of '9' was a cutoff value (AUC, 0.966; sensitivity, 91%–100%; specificity, 85%). By repeated-measures ANOVA, the differences in improved walking ability according to time were significant between group of patients who had baseline BBS score of '9' and those who did not have baseline BBS score of '9'

Conclusion

Our results showed that a baseline BBS score above '9' and a short duration of disease were highly correlated with improved walking ability after robot-assisted gait training. Therefore, baseline BBS and duration of disease should be considered clinically for gaining walking ability in robot-assisted training group.

Citations

Citations to this article as recorded by  
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    Soo Yong Lee, Yu Sik Choi, Min Hyuk Kim, Woo Nam Chang
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  • Gait Performance and Brain Activity Are Improved by Gait Automatization during Robot-Assisted Gait Training in Patients with Burns: A Prospective, Randomized, Single-Blinded Study
    Seung Yeol Lee, Jisu Seo, Cheong Hoon Seo, Yoon Soo Cho, So Young Joo
    Journal of Clinical Medicine.2024; 13(16): 4838.     CrossRef
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    Betsy D. M. Chaparro-Rico, Daniele Cafolla, Paolo Tortola, Giuseppe Galardi
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  • 6,878 View
  • 60 Download
  • 16 Web of Science
  • 16 Crossref
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