المؤلفون: Kim, Jongbum, Oh, Seunghue, Jo, Yongjin, Moon, James Hyungsup, Kim, Jonghyun

مصطلحات موضوعية: body weight support, overground walking training, treadmill, wire mechanism, gait rehabilitation, SPEED

الوصف: Introduction: Body weight support overground walking training (BWSOWT) is widely used in gait rehabilitation. However, existing systems require large workspace, complex structure, and substantial installation cost for the actuator, which make those systems inappropriate for the clinical environment. For wide clinical use, the proposed system is based on a self-paced treadmill, and uses an optimized body weight support with frame-based two-wire mechanism. Method: The Interactive treadmill was used to mimic overground walking. We opted the conventional DC motors to partially unload the body weight and modified pelvic type harness to allow natural pelvic motion. The performance of the proposed system on the measurement of anterior/posterior position, force control, and pelvic motion was evaluated with 8 healthy subjects during walking training. Results: We verified that the proposed system was the cost/space-effective and showed the more accurate anterior/posterior position than motion sensor, comparable force control performance, and natural pelvic motion. Discussion: The proposed system is cost/space effective, and able to mimic overground walking training with body weight support. In future work, we will improve the force control performance and optimize the training protocol for wide clinical use. Copyright © 2023 Kim, Oh, Jo, Moon and Kim. ; TRUE

وصف الملف: application/pdf

العلاقة: http://hdl.handle.net/20.500.11750/47557Test; 2-s2.0-85163671012; Frontiers in Neurorobotics, v.17

الإتاحة: https://doi.org/20.500.11750/47557Test
https://doi.org/10.3389/fnbot.2023.1089377Test
https://hdl.handle.net/20.500.11750/47557Test

المؤلفون: Oh, Seunghue, Song, Minsu, Kim, Jonghyun

مصطلحات موضوعية: Gait training, Attention, Task complexity, Walking speed, Interactive treadmill (ITM), fNIRS, NEAR-INFRARED SPECTROSCOPY, CORTICAL ACTIVATION, FORCE FEEDBACK, SPEED CONTROL, WALKING, GAIT, MOTOR, REHABILITATION, TASK, NEUROREHABILITATION

الوصف: Background: Existing treadmill-based locomotion training, which has been used for gait function recovery, still has limitations, such as less attentive training. Interactive treadmills (ITMs) were developed to overcome these limitations, but it has not yet been verified that ITMs can make the user pay closer attention to walk training. Methods: An experimental comparison between ITMs and conventional treadmills was conducted by measuring the level of the user's attention using functional near-infrared spectroscopy (fNIRS). To consider the effect of task complexity on the subject's attention, we provided two (slow and fast) speed conditions for walking on both treadmills. Results: Both the cortical activity images and oxygenated hemoglobin (oxyHb) changes showed that the level of attention to walking induced by the ITM was significantly higher than that induced by the conventional treadmill. We found that the walking speed on the ITM also affected the level of attention. Conclusion: ITM-based locomotion training would be a promising solution to the limitations of existing treadmill-based locomotion training currently used to improve gait function recovery. Trial registration: DGIST-HR-150309-03-02. Registered 01 March 2015. © 2018 The Author(s). ; TRUE

وصف الملف: application/pdf

العلاقة: http://hdl.handle.net/20.500.11750/9537Test; 2-s2.0-85058872376; Journal of NeuroEngineering and Rehabilitation, v.15, no.1

الإتاحة: https://doi.org/20.500.11750/9537Test
https://doi.org/10.1186/s12984-018-0472-xTest
https://hdl.handle.net/20.500.11750/9537Test

المؤلفون: Kim, Sung-Eun, Ko, Il-Gyu, Ji, Eun-Sang, Jin, Jun-Jang, Hwang, Lakkyong, Kim, Sang-Hoon, Cho, Sehyung, Kim, Chang-Ju, Kim, Kyungjin, Kim, Khae Hawn

مصطلحات موضوعية: BMAL1, Circadian rhythm, Memory impairment, Treadmill exercise, EARLY GENE ZIF268, CREB, TRANSCRIPTION, HIPPOCAMPUS, PLASTICITY, STRESS, CONSOLIDATION, MODULATION

الوصف: Purpose: Circadian rhythm affects learning process, memory consolidation, and long-term memory. In this study, the alleviating effect of exercise on circadian rhythm disruption-induced memory deficits was investigated. Methods: BMAL1 knockdown transgenic mice (BMAL1 TG) were used as the BMAL1-TG group and the BMAL1-TG with treadmill exercise group. Female C57BL/6J mice of the same age were used as the wildtype group and the wildtype with treadmill exercise group. The mice in the treadmill exercise groups performed running on a motorized treadmill under the dark-dark conditions for 8 weeks. Short-term memory, nonspatial object memory, and spatial learning memory were determined using step-down avoidance test, novel object-recognition test, and radial 8-arm maze test. Immunohistochemistry for doublecortin and 5-bromo-2'-deoxyuridine was conducted for the determination of hippocampal neurogenesis. Using the western blot analysis, we determined the expressions of glucocorticoid receptor (GR) and factors related to the neurogenesis and memory consolidation, such as brain-derived neurotrophic factor, tyrosine kinase B, p44/42 mitogen-activated protein kinase, cyclic AMP-responsive element binding protein, phosphatidylinositol 3-kinase, protein kinas B, protein kinase C alpha, early-growth-response gene 1. Results: Circadian rhythm disruption impaired memory function through inhibiting the expressions of GR and the factors related to neurogenesis and memory consolidation. Treadmill exercise improved memory function via enhancing the expressions of GR and above-mentioned factors. Conclusions: Treadmill exercise acts as the zeitgeber that improves memory function under the circadian rhythm disrupted conditions. © 2019 Korean Continence Society ; TRUE

العلاقة: http://hdl.handle.net/20.500.11750/47846Test; 2-s2.0-85062269540; International Neurourology Journal, v.23, pp.S40 - S49; ART002442334

الإتاحة: https://doi.org/20.500.11750/47846Test
https://doi.org/10.5213/inj.1938048.024Test
https://hdl.handle.net/20.500.11750/47846Test

المؤلفون: Kim, Jonghyun, Gravunder, Andrew, Park, Hyung-Soon

مصطلحات موضوعية: motion sensor, interactive treadmill, low-cost, convenience, self-paced treadmill, treadmill-on-demand, walking, locomotion, CEREBRAL-PALSY, Feedback, MICROSofT KINECT, Speed, SYSTem, VIRTUAL ENVIRONMENT

الوصف: Interactive treadmills were developed to improve the simulation of overground walking when compared to conventional treadmills. However, currently available interactive treadmills are expensive and inconvenient, which limits their use. We propose a low-cost and convenient version of the interactive treadmill that does not require expensive equipment and a complicated setup. As a substitute for high-cost sensors, such as motion capture systems, a low-cost motion sensor was used to recognize the subject's intention for speed changing. Moreover, the sensor enables the subject to make a convenient and safe stop using gesture recognition. For further cost reduction, the novel interactive treadmill was based on an inexpensive treadmill platform and a novel high-level speed control scheme was applied to maximize performance for simulating overground walking. Pilot tests with ten healthy subjects were conducted and results demonstrated that the proposed treadmill achieves similar performance to a typical, costly, interactive treadmill that contains a motion capture system and an instrumented treadmill, while providing a convenient and safe method for stopping. ; FALSE

وصف الملف: application/pdf

العلاقة: http://hdl.handle.net/20.500.11750/2589Test; 2-s2.0-84974605397; Sensors, v.15, no.9, pp.23667 - 23683

الإتاحة: https://doi.org/20.500.11750/2589Test
https://doi.org/10.3390/s150923667Test
https://hdl.handle.net/20.500.11750/2589Test

المؤلفون: Kim, Jonghyun, Gravunder, Andrew, Park, Hyung-Soon

مصطلحات موضوعية: motion sensor, interactive treadmill, low-cost, convenience, self-paced treadmill, treadmill-on-demand, walking, locomotion, virtual environment, microsoft kinect, cerebral-palsy, speed, Electrochemistry, Instruments &, Instrumentation

الوصف: Interactive treadmills were developed to improve the simulation of overground walking when compared to conventional treadmills. However, currently available interactive treadmills are expensive and inconvenient, which limits their use. We propose a low-cost and convenient version of the interactive treadmill that does not require expensive equipment and a complicated setup. As a substitute for high-cost sensors, such as motion capture systems, a low-cost motion sensor was used to recognize the subject's intention for speed changing. Moreover, the sensor enables the subject to make a convenient and safe stop using gesture recognition. For further cost reduction, the novel interactive treadmill was based on an inexpensive treadmill platform and a novel high-level speed control scheme was applied to maximize performance for simulating overground walking. Pilot tests with ten healthy subjects were conducted and results demonstrated that the proposed treadmill achieves similar performance to a typical, costly, interactive treadmill that contains a motion capture system and an instrumented treadmill, while providing a convenient and safe method for stopping. ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education(2013R1A1A2063097/2014R1A1A2059068); Technology Innovation Program - Ministry of Trade, Industry and Energy (MI, Korea)(10051147); KAIST End-Run program; DGIST MIREBraiN program; Intramural Research Program of the NIH, Clinical Center(90-CC-0168)

العلاقة: Kim, J.; Gravunder, A.; Park, H.-S., Commercial Motion Sensor Based Low-Cost and Convenient Interactive Treadmill. Sensors 2015, 15, (9), 23667-23683.; http://hdl.handle.net/20.500.11750/582Test

الإتاحة: https://doi.org/20.500.11750/582Test
https://hdl.handle.net/20.500.11750/582Test

المؤلفون: Kim, Jonghyun, Park, Hyungsoon, Damiano, Diane Louise

مصطلحات موضوعية: Anomalous force (AF), Locomotor training, Rehabilitation, Simulating overground walking (OW), Treadmill control, Patient rehabilitation, Healthy subjects, Novel control scheme, Real time measurements, Treadmill controls, Treadmill walking, Sporting goods

الوصف: Since the purpose of treadmill-based locomotor training is to transfer lower extremity coordinative skill to overground walking (OW), it needs to simulate OW as closely as possible for optimal skill transfer. Typical treadmill walking at a preset constant speed is different from realistic overground walking because it is less engaging and more automatic. As a remedy for the limitation, this paper investigates a novel treadmill control scheme that allows users to change walking speed freely. It further simulates natural walking by reducing anomalous force (AF) due to acceleration of the treadmill belt. Adding an attenuator in the scheme effectively diminishes the AF when changing walking speed. The proposed scheme, which requires real-time measurement of pelvic and swing foot motion, was developed for a treadmill with a typical belt length (1.5m). A clinical test was conducted with nine healthy subjects in order to quantitatively evaluate the proposed scheme by comparing it with the two existing control schemes in the literature. © 1996-2012 IEEE.

العلاقة: Kim, J.; Park, H.; Damiano, D. L., An interactive treadmill under a novel control scheme for simulating overground walking by reducing anomalous force. IEEE/ASME Transactions on Mechatronics 2015, 20, (3), 1491-1496.; http://hdl.handle.net/20.500.11750/583Test

الإتاحة: https://doi.org/20.500.11750/583Test
https://doi.org/10.1109/TMECH.2014.2341039Test
https://hdl.handle.net/20.500.11750/583Test