지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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This study is about the development of the wrist rehabilitation system for the patient who has limited capability of movement after stroke. Electromyography triggered training system (ETTS) can play the role between complete passive training and patient activating training system. Surface EMG was measured on pronator teres muscle and biceps brachii muscle for wrist pronation and supination. Our system detects whether the subject makes muscular effort for pronation or supination or nothing in every 50 ms. When the effort level exceeds the preset percentage of maximal voluntary contraction, the motor rotates according to the direction of the intention of the subject.
EMG triggers the motor rotation for the wrist rehabilitation training until the preset angle. To evaluate its performance, the maximum voluntary contraction level was measured for 4 subjects at first. With the audio-visual instruction to rotate the wrist (pronation or supination) the subjects made effort to follow the instruction. After calculating root mean square (RMS) for 50 ms, the controller determines whether there was muscular effort to rotate while holding the motor. When there was an effort to rotate, the controller rotates the motor 0.8 degree. By comparing the RMS values from two channels of EMG, the controller determines the rotational direction. The onset delay is 0.76 ± 0.24 s and offset delay is 0.65 ± 0.22 s for pronation. For supination the onset delay is 1.24 ± 0.41 s and offset delay is 0.77 ± 0.22 s. The system responded fast enough to be used for rehabilitation training. The controller perceived the direction of rotation 100% correctly for the pronation and 97.5% correctly for supination. ETTS was developed and the fundamental functions were validated for normal subjects. The clinical validation should be done with patients for real world application. With ETTS, the subjects can train voluntarily over the limitation of the range of motion which increases the effectiveness of the rehabilitation training.
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참고문헌 (11)
참고문헌 신청
C. Gowland / 1992 / Agonist and antagonist activity during voluntary upper-limb movement in patients with stroke / Journal of the American Physical Therapy Association 72 : 6
Clarkson / 2000 / Musculoskeletal Assessment: Joint Range of Motion and Manual Muscle Strength / Lippincott Williams & Wilkins, press : 191 ~ 194
H. Frederic / 2008 / Fundamentals of Anatomy & Physiology / Benjamin-Cummings Publishing Company, press : 359 ~ 371
HI. Krebs / 1999 / Overview of clinical trials with mit-manus : a robot-aided neuro-rehabilitation facility / J. Technology and Health Care 7 (6) : 419 ~ 423
J. Oblak / 2010 / Universal haptic drive : a robot for arm and wrist rehabilitation / IEEE Transactions on Neural Systems and Rehabilitation Engineering 18 (3) : 293 ~ 302
Clarkson / 2000 / Musculoskeletal Assessment: Joint Range of Motion and Manual Muscle Strength / Lippincott Williams & Wilkins, press : 191 ~ 194
H. Frederic / 2008 / Fundamentals of Anatomy & Physiology / Benjamin-Cummings Publishing Company, press : 359 ~ 371
HI. Krebs / 1999 / Overview of clinical trials with mit-manus : a robot-aided neuro-rehabilitation facility / J. Technology and Health Care 7 (6) : 419 ~ 423
J. Oblak / 2010 / Universal haptic drive : a robot for arm and wrist rehabilitation / IEEE Transactions on Neural Systems and Rehabilitation Engineering 18 (3) : 293 ~ 302
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