| 제목 |
Cortical Activation Pattern after Long-term Gait Training with Wearable Hip-assist Robot in Elderly |
| 소속 |
Samsung Medical Center, Department of Physical and Rehabilitation Medicine, Center for Prevention and Rehabilitation, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea1, Samsung Medical Center, Department of Health Sciences and Technology, Department of Medical Device Management & Research, Department of Digital Health, SAIHST, Sungkyunkwan University2, Samsung Medical Center, Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea3, Samsung Medical Center, Office of Biomechanical science, Research Center for Future Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea 4 |
| 저자 |
Su-Hyun Lee1*, Hwang-Jae Lee1,2, Dong-Seok Kim2, Won Hyuk Chang1, Byung-Ok Choi3, Gyu-Ha Ryu4, Yun-Hee Kim1,2† |
Objective: The purpose of this study was to investigate the effect of the long-term gait training with wearable hip-assist robot on cortical activation pattern during walking in elderly persons.
Methods: Seven elderly persons (mean age, 74±6.24, 3 males) participated. A wearable type hip-assist robot, Gait Enhancing Mechatronic System (GEMS, Samsung Electronics Co., Ltd., Korea), was used. Participants received over ground gait training with GEMS in various environments, 24 sessions for consecutive 8 weeks. Cerebral oxygenation was measured by oxyhemoglobin (OxyHb) concentration using the 49 channels of functional near infrared spectroscopy (fNIRS) imaging system (NIRScout, NIRx Medical Technology, LLC, Germany) covering bilateral prefrontal cortices (PFC), premotor cortices (PMC), supplemental motor areas (SMA), and lower limb sensorimotor cortices (SMC). Cortical activation was assessed at pre- and post-intervention, and at 4 weeks follow-up time points.
Results: After completion of 24 gait training sessions with GEMS, we observed less OxyHb concentration over bilateral SMCs, SMAs, and PMCs in the late period of gait, between 31 and 60 seconds after initiating walking task (p<.05). These changes were maintained until 4 weeks after the cessation of training (p<.05).
Conclusion: The long-term intensive gait training in elderly persons with GEMS demonstrated decreased activity of specific cortical regions related with gait which might represent increased efficiency of cortical neural resources during walking. |
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